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Author
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Topic: Camshaft decision
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grandestang
Gearhead Posts: 375
From: Lake Bluff, Illinois USA
Registered: Jan 2003
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posted 11-28-2003 10:19 PM
 
For my 351W build up, I am having some trouble deciding on a cam. So far, I plan on using AFR 165 or 185 (problably the 185s) or if my wallet gets tight I will use Edelbrock Performer RPM heads. Whatever the case a high flowing SBF head is a must. I have already purchased a performer rpm intake manifold and hooker competition headers. So basically all that is undecided is my camshaft. What I want out of this motor is a stout 400 hp and plenty of torque as the car will be mainly street driven. Another factor is I want to use the power brakes. I have heard good things about the 270H & S and am strongly considering this. But can I get away with a bigger cam than this in a 351W while still maintaining good low end torque and vacuum? (aside from using a roller cam) Or does the 270H or S sound like what I am looking for? Will it get me to the 400 hp region?
After hearing V8Thumper's success with the 282S I wonder if something like this would better suit me. Just looking for any advice or opinions as to where I should go with this.  Paul ------------------
1970 Grande
H code 351W FMX
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V8 Thumper
Gearhead Posts: 4777
From: Phoenix, Arizona
Registered: Dec 2001
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posted 11-28-2003 10:30 PM
270S would be a great choice! For performance, I wouldn't choose anything other than a solid grind  . Periodic lash adjustment is NOT a big deal IMO. If using an auto trans (looking at your sig, looks like it) a 270 would be max you're likely to get away with, unless you go to a loose converter and short gears. The 282 I just installed changed the motor's character dramatically; way too much camshaft for a stock converter. One reason why I like three pedals  With RPM heads, good ignition, good carb/intake, good exhaust and a 270S you'll see 400hp no problem. Stump pulling torque too  ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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V8 Thumper
Gearhead Posts: 4777
From: Phoenix, Arizona
Registered: Dec 2001
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posted 11-28-2003 10:45 PM
I just saw that you want to keep your power brake booster. A 270 w/ dual plane manifold should be ok. In fact, a solid grind will make (a little) more manifold vacuum due to its faster ramp speed. A 282 would require a vacuum can, 12v. vac pump or both  I put a 270H in my Papa-in-law's 429 powered Galaxie. Didn't hurt the booster's function at all. However, big block displacement will make a cam profile 'feel' alot smaller than it would on 100 (give or take) fewer cubic inches. Note: I do not run power brakes or a/c ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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grandestang
Gearhead Posts: 375
From: Lake Bluff, Illinois USA
Registered: Jan 2003
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posted 11-28-2003 10:56 PM
Excellent! You just told me exactly what I wanted to hear! I may change my stall speed but it would only be slight, I would hate a loose converter on the street.
I would love to have a solid lifter cam, but my mechanical experience is little to none. Is it really not that bif of a deal to do? How long does it take and how often do you have to do it? It would be great to have the performance benefits of a solid lifter cam! Paul ------------------
1970 Grande
H code 351W FMX
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V8 Thumper
Gearhead Posts: 4777
From: Phoenix, Arizona
Registered: Dec 2001
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posted 11-28-2003 11:02 PM
Once installed you set it cold, do your run-in and immediately set them hot. You wind up lashing it again after 500 miles or so. Provided that you've got good fastening hardware, you shouldn't need to do it again anytime soon. I check mine regularly, but I also wind my motor to 7000 rpm. I re-set the lash at oil changes, but they move very little. Comp Cams' online catalog has a bunch of great tech info, from degreeing to proper lash adjustment. Check it out ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html [This message has been edited by V8 Thumper (edited 11-29-2003).]
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grandestang
Gearhead Posts: 375
From: Lake Bluff, Illinois USA
Registered: Jan 2003
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posted 11-29-2003 03:17 PM
quote:
Originally posted by V8 Thumper:
Once installed you set it cold, do your run-in and immediately set them hot. You wind up lashing it again after 500 miles or so. Provided that you've got good fastening hardware, you shouldn't need to do it again anytime soon. I check mine regularly, but I also wind my motor to 7000 rpm. I re-set the lash at oil changes, but they move very little. Comp Cams' online catalog has a bunch of great tech info, from degreeing to proper lash adjustment. Check it out
Another concern I have is the how the aluminum heads will affect the solid cam. I does get pretty cold around here towards the end of the fall (like right now) but these are times where I still like to try to squeeze the last driveable days out of my mustang. So will the colder climate cause the aluminum heads to throw off the lash setting? Or will everything even out once the motor warms up? Paul ------------------
1970 Grande
H code 351W FMX
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Dubz
Gearhead Posts: 2005
From: Manitoba Canada
Registered: Oct 2002
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posted 11-29-2003 03:27 PM
I would assume that lash would be incorrect till the motor warms up, but it'll be the same once it's warm
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V8 Thumper
Gearhead Posts: 4777
From: Phoenix, Arizona
Registered: Dec 2001
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posted 11-29-2003 09:58 PM
Aluminum heads do grow quite a bit. I've got Trick Flow heads, and with the lash set at .022 hot, they shrink to .017 cold. As long as you're aware of it and allow the motor to get some heat in it before you bury the pedal (you should anyway) you've got no worries ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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grandestang
Gearhead Posts: 375
From: Lake Bluff, Illinois USA
Registered: Jan 2003
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posted 12-01-2003 07:34 PM
quote:
Originally posted by V8 Thumper:
270S would be a great choice! For [b]performance, I wouldn't choose anything other than a solid grind . Periodic lash adjustment is NOT a big deal IMO. If using an auto trans (looking at your sig, looks like it) a 270 would be max you're likely to get away with, unless you go to a loose converter and short gears. The 282 I just installed changed the motor's character dramatically; way too much camshaft for a stock converter. One reason why I like three pedals With RPM heads, good ignition, good carb/intake, good exhaust and a 270S you'll see 400hp no problem. Stump pulling torque too [/B]
Oh yeah, one more thing that I forgot to ask... This is assuming I will be using 1.6 rocker arms, correct? Sorry if this sounds dumb, but its all new to me. What would you recommend using 1.6 or 1.7? Thanks
Paul
------------------
1970 Grande
H code 351W FMX
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V8 Thumper
Gearhead Posts: 4777
From: Phoenix, Arizona
Registered: Dec 2001
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posted 12-02-2003 08:49 AM
Your choice, really. 1.7's will give you a little more lift. Provided that your springs are up to it and you've got MINIMUM piston/valve clearance of .100-exhaust and .060-intake, it's your call. If those RPM heads have 2.02 intake valves, you'll likely need to flycut the pistons for intake valve relief ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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grandestang
Gearhead Posts: 375
From: Lake Bluff, Illinois USA
Registered: Jan 2003
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posted 12-02-2003 01:46 PM
quote:
Originally posted by V8 Thumper:
Your choice, really. 1.7's will give you a little more lift. Provided that your springs are up to it and you've got MINIMUM piston/valve clearance of .100-exhaust and .060-intake, it's your call. If those RPM heads have 2.02 intake valves, you'll likely need to flycut the pistons for intake valve relief
I will likely be going with a 1.9 intake as tests on the performer RPM heads indicate there isn't much out of the box gain with the 2.02s, maybe like 5 cfm or so at .5 inches lift. I will be checking piston to valve clearance anyway but just in case anyone knows ahead of time.... do you or anyone else think that I will have piston to valve clearence problems with a 1.9 intake valve, 270s cam, and stock 1970 351W 2V pistons? Paul
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bluestreek
Gearhead Posts: 1724
From: Athens,GA
Registered: Jul 2001
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posted 12-02-2003 02:37 PM
I've ran 230 duration and .520 lift without any problems with the stock 1.85 valves but not sure about the 1.90. You should always check before you seal it up though. The 270S will lose some lift because of the lash required. If you find that you have plenty of clearance, you can move up to the 1.7 rockers and gain a few more ponies. ------------------
1966 Mustang Coupe: Custom glass hood and BIG scoop sits atop a 289 stroked to 331 c.i., Steel crank, rods and girdle, TFS alum. heads, Stealth 8020 intake, Xtreme 268 Solid Roller, Holley 750 HP, long tubes, 4speed, 9" 3.50 posi.
11.86 @ 116 mph (7.62 @ 93 mph)daily driver!
DanH
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V-8
Gearhead Posts: 324
From: TURKEY/Istanbul
Registered: Dec 2003
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posted 12-02-2003 02:38 PM
quote:
Originally posted by grandestang:
For my 351W build up, I am having some trouble deciding on a cam. So far, I plan on using AFR 165 or 185 (problably the 185s) or if my wallet gets tight I will use Edelbrock Performer RPM heads. Whatever the case a high flowing SBF head is a must. I have already purchased a performer rpm intake manifold and hooker competition headers. So basically all that is undecided is my camshaft. What I want out of this motor is a stout 400 hp and plenty of torque as the car will be mainly street driven. Another factor is I want to use the power brakes. I have heard good things about the 270H & S and am strongly considering this. But can I get away with a bigger cam than this in a 351W while still maintaining good low end torque and vacuum? (aside from using a roller cam) Or does the 270H or S sound like what I am looking for? Will it get me to the 400 hp region?
After hearing V8Thumper's success with the 282S I wonder if something like this would better suit me. Just looking for any advice or opinions as to where I should go with this. Paul
hi;
? use comp cams 280r mech. roller cam with 608-612 lift,242-248 0.050,110 lobe seperation,2500-6500 power band.? use it on the street,daily drive ).
in turkey there are no problems with speed and emission controls.
? have some vacuumproblems with power brakes,? solve it with asummit vacuum can.
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V-8
Gearhead Posts: 324
From: TURKEY/Istanbul
Registered: Dec 2003
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posted 12-02-2003 02:53 PM
quote:
Originally posted by grandestang:
For my 351W build up, I am having some trouble deciding on a cam. So far, I plan on using AFR 165 or 185 (problably the 185s) or if my wallet gets tight I will use Edelbrock Performer RPM heads. Whatever the case a high flowing SBF head is a must. I have already purchased a performer rpm intake manifold and hooker competition headers. So basically all that is undecided is my camshaft. Paul
hi paul,
? use tfs twisted wedge head on my 351w.they are breath very very well idle to 6500rpm.and the valves are like canted. because of this it gives good upper rpm without losing lower torque.but you cant use your stock push rods and rockers.its intake runner is 170cc but it is flow bench result is better than other street heads.
? prefer you tfs twisted wedge heads.
[This message has been edited by V-8 (edited 12-03-2003).]
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V8 Thumper
Gearhead Posts: 4777
From: Phoenix, Arizona
Registered: Dec 2001
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posted 12-03-2003 08:34 AM
I too run Trick Flow heads
Hey V-8... did you port your heads? That roller you run sounds like an awesome grind
The Twisted Wedge heads seem to peak out around .550" lift on the intake side, as cast that is. ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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V-8
Gearhead Posts: 324
From: TURKEY/Istanbul
Registered: Dec 2003
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posted 12-03-2003 04:10 PM
no i didnt port my heads.
when i put540+ lift cam (608-612) i chahged the valve springs and put triple of them.also i have got crane cams roller rockers with 1.6 ratio.when i truned the crank to control the springs i saw that, the inner spring (damper) hits the outer springs at full lift.at the end i changed the shims with thiner ones and i solve the problem.
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V-8
Gearhead Posts: 324
From: TURKEY/Istanbul
Registered: Dec 2003
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posted 12-03-2003 04:14 PM
hi,V8 Thumper
can i learn, what is your max shift point?
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V8 Thumper
Gearhead Posts: 4777
From: Phoenix, Arizona
Registered: Dec 2001
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posted 12-03-2003 09:00 PM
7000 rpm Sounds like you've got one mean combination too! Got any pictures? ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html [This message has been edited by V8 Thumper (edited 12-03-2003).]
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V-8
Gearhead Posts: 324
From: TURKEY/Istanbul
Registered: Dec 2003
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posted 12-04-2003 05:35 AM
nice stang man
i have got dui elec. ignition.msd 6al ,is good for upper rpms?i saw a red box in your cars picture. what it is?
what did you do on your heads, ported?
i will send my cars picture but you know after 100 posts  .hand made eleanor body kit on it.
ooops http://www.vipspeed.com/resto_mustang.htm you can see .ofcourse not with that rims...
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V-8
Gearhead Posts: 324
From: TURKEY/Istanbul
Registered: Dec 2003
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posted 12-04-2003 05:43 AM
http://www.vipspeed.com/cars.htm.this my old seem 2002.
http://www.otospor.com/resim/temmuz2002/42.jpg.
it isnt black now.eleanor colour
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matt d
Journeyman Posts: 58
From: Coventry, CT USA
Registered: Mar 2003
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posted 12-04-2003 09:27 PM
Hey bluestreak-Did you put in a smaller cam? I noticed your signature now shows XE 268 R instead of the 274. I wonder because I have an XE274R that I am about to put in my 351W. I just got the new springs etc in the mail today. Was the 274 cam too big? Thanks,
Matt ------------------
66 coupe with: 351W, Comp Cams XE262H cam, Trickflow heads, Performer RPM intake, Edelbrock 600 carb, Ford roller rockers, Hooker Super Comps, Dr. Gas X-pipe with 2-chamber delta flows, Tremec TKO, Steeda Tri-Ax, 9" rear w/ 3.70s and a True-Trac limited slip, 5-leaf rear springs, 620s front, KYBs, shelby A-arm drop, Torque-thrust IIs, autopower roll bar with retractable shoulder belts, custom dash and electrical system
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bluestreek
Gearhead Posts: 1724
From: Athens,GA
Registered: Jul 2001
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posted 12-04-2003 10:29 PM
Matt,
I had 4.44 rear gears and a XE274R cam when I first built the 331. After driving it around for a few weeks I decided that it was way too much for a street car. So I switched back to the 3.50 street gears and got CompCams to swap it for a XE268R (230/236 @ .050).Don't worry, the XE274R will be just right for the 351. If you have enough valvetip length above the retainers, I would suggest that you get some lashcaps for the SS valves. I noticed some tip wear after about 3000 miles and put some on mine. The caps are wider and harder than the valvetips and haven't worn a bit since I put them on. Also check to be sure that your rockers clear the studs, springs, and retainers, through the full lift cycle. .600 lift is just enough to get you in trouble, but it's worth it! ------------------
1966 Mustang Coupe: Custom glass hood and BIG scoop sits atop a 289 stroked to 331 c.i., Steel crank, rods and girdle, TFS alum. heads, Stealth 8020 intake, Xtreme 268 Solid Roller, Holley 750 HP, long tubes, 4speed, 9" 3.50 posi.
11.86 @ 116 mph (7.62 @ 93 mph)daily driver!
DanH
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V-8
Gearhead Posts: 324
From: TURKEY/Istanbul
Registered: Dec 2003
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posted 12-05-2003 07:47 AM
hi,
bluestreek,you run with 750hp.i m going to put it too.it is good?i m using 4150dp classic series holley.what are the advantages of hp series?thanks...
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matt d
Journeyman Posts: 58
From: Coventry, CT USA
Registered: Mar 2003
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posted 12-10-2003 08:50 PM
Thanks Dan. I took your advice from a different post and bought the lash caps. I got the 977-16 springs, the Comp cams standard height 10 degreee retainers with the lash cap recess, 10 degree locks, and the lash caps. The stock spring height on Twisted Wedge heads is 1.800" and the springs are supposed to be installed at 1.850". I am hoping the 10 degree locks add a little (0.020" to 0.050") to the valve's installed height compared to the stock retainers so I get closer to 1.850". If not, I'll have to change some parts around or maybe get the +.050" retainers and ditch the lash caps. We'll see...
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bluestreek
Gearhead Posts: 1724
From: Athens,GA
Registered: Jul 2001
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posted 12-10-2003 10:36 PM
If you find that the spring height comes up a little short you can just cut the spring pockets .060 deeper to allow for the .600 lift and the lash caps. I bought my heads bare and built them for what i needed.------------------
1966 Mustang Coupe: Custom glass hood and BIG scoop sits atop a 289 stroked to 331 c.i., Steel crank, rods and girdle, TFS alum. heads, Stealth 8020 intake, Xtreme 268 Solid Roller, Holley 750 HP, long tubes, 4speed, 9" 3.50 posi.
11.86 @ 116 mph (7.62 @ 93 mph)daily driver!
DanH
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matt d
Journeyman Posts: 58
From: Coventry, CT USA
Registered: Mar 2003
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posted 12-12-2003 07:30 AM
Cool, thanks. It probably would be a better decision to just bite the bullet and get some machining done if it is necessary.
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bluestreek
Gearhead Posts: 1724
From: Athens,GA
Registered: Jul 2001
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posted 12-12-2003 10:56 AM
Matt, you're gonna be amazed at how quickly that Windsor will buzz up to 7000 rpms compared to that weeny hydro cam. Take your time and set the valvetrain up right and it will give you many thousand miles of gut wrenching power. Your gonna have one wild ride when it's finished so please be careful till you get used to the extra power and let us know how it feels. 0-60 in 4 seconds at least! ------------------
1966 Mustang Coupe: Custom glass hood and BIG scoop sits atop a 289 stroked to 331 c.i., Steel crank, rods and girdle, TFS alum. heads, Stealth 8020 intake, Xtreme 268 Solid Roller, Holley 750 HP, long tubes, 4speed, 9" 3.50 posi.
11.86 @ 116 mph (7.62 @ 93 mph)daily driver!
DanH
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matt d
Journeyman Posts: 58
From: Coventry, CT USA
Registered: Mar 2003
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posted 12-12-2003 07:35 PM
I cannot wait. Is it spring yet....
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grandestang
Gearhead Posts: 375
From: Lake Bluff, Illinois USA
Registered: Jan 2003
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posted 12-18-2003 01:19 PM
Well, went with the 270S. Hopefully will be here before Christmas (should be anyway). I probably won't go in for quite some time, but I am just stockpiling parts right now anyway. Thanks for all the help Todd, I can't wait to see how it runs with this cam Paul ------------------
1970 Grande
H code 351W FMX
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indyphil
Gearhead Posts: 3394
From: Senoia, G.A. USA
Registered: Jul 2002
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posted 12-18-2003 01:48 PM
Paul,
How was your first semester? Sounds like your going to be making a lot of horsepower soon. I too have been thinking about a 270s. By the way from what I can tell AFR 185 heads only come with 2.02 valves but the 165s come with the smaller 1.94 valves (i may have the last digits a little wrong but you get the message) Anyway let us know how your engine goes and let me know how the engineering degree is going at Purdue. ------------------
'68 coupe 289 C code
66 heads, edel 600cfm carb, performer intake, dual exhaust http://www.geocities.com/ottouk_77/68mustang.htm
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V8 Thumper
Gearhead Posts: 4777
From: Phoenix, Arizona
Registered: Dec 2001
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posted 12-18-2003 04:30 PM
Great choice Paul You won't be disapointed!------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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grandestang
Gearhead Posts: 375
From: Lake Bluff, Illinois USA
Registered: Jan 2003
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posted 12-18-2003 06:04 PM
quote:
Originally posted by indyphil:
Paul,
How was your first semester? Sounds like your going to be making a lot of horsepower soon. I too have been thinking about a 270s. By the way from what I can tell AFR 185 heads only come with 2.02 valves but the 165s come with the smaller 1.94 valves (i may have the last digits a little wrong but you get the message) Anyway let us know how your engine goes and let me know how the engineering degree is going at Purdue.
I was refering to the Edelbrock Performer RPM heads with the 1.9 vs 2.02 valve sizes. If I go with AFR heads they will likely be the 165s. Despite the fact that they seem small for a 351W looking at their flow numbers they seem ideal for my cam characteristics. Plus with the 165 intake runner volume and smaller 1.9 valves they would make killer low end torque I will likely be going with the Edelbrocks simply for price.
And as far as Purdue, it is going great, but engineering here freshman year is all about weeding out those not up to the cut. And as far as workload concerns, thats not a good thing. But I have made it through the first semester A-OK and hopefully will continue the success. Last day of finals tommorow so I'm not free yet. But after this, a straight three weeks of X-mas break Paul ------------------
1970 Grande
H code 351W FMX
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Fastymz
Moderator Posts: 22791
From: Reno Nv M&M #1240
Registered: Apr 2001
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posted 12-18-2003 06:10 PM
Paul are you rebuilding the short block too?
If so what compression are you going to run. From all I've been told is go with the 2.02 valves it leaves alittle room for more cam later. ------------------
SCOOP 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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grandestang
Gearhead Posts: 375
From: Lake Bluff, Illinois USA
Registered: Jan 2003
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posted 12-18-2003 06:55 PM
quote:
Originally posted by Fastymz:
Paul are you rebuilding the short block too?
If so what compression are you going to run. From all I've been told is go with the 2.02 valves it leaves alittle room for more cam later.
If the short block does not need a rebuild it will not recieve one at this point. When we open up the motor we'll see what and what and doesn't need. Since this motor was lightly driven its whole life hopefully the inside will be looking okay. And I know it probably should be rebuilt anyway but this motor will not be seeing alot of serious RPM or hard use, at least not yet. As far as valve sizing, you may have a point with the AFR 185 heads with the 2.02s but for the Edelbrocks, I have read in several places there isn't much to be gained with the 2.02s. Believe it or not the AFR 165s outflow the Edelbrocks by 20.8 cfm on the intake, and 10.2 on the exhaust. So for the 270S they would be perfect. Hopefully I won't get the urge for more and more once this motor is done, then I really would need some extra valve size Paul ------------------
1970 Grande
H code 351W FMX
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Fastymz
Moderator Posts: 22791
From: Reno Nv M&M #1240
Registered: Apr 2001
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posted 12-18-2003 08:33 PM
Paul if your like me or most guys on here. Plan for more now, it's cheaper to buy the parts once.
I might look into the AFR heads too.AFR out flow the RPM 2.02 heads at all rpm's or just at peak ?
From the info I've been told it has said for the small price difference the 2.02 valve RPM head is the only way to go ? ------------------
SCOOP 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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grandestang
Gearhead Posts: 375
From: Lake Bluff, Illinois USA
Registered: Jan 2003
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posted 12-18-2003 09:18 PM
quote:
Originally posted by Fastymz:
Paul if your like me or most guys on here. Plan for more now, it's cheaper to buy the parts once.
I might look into the AFR heads too.AFR out flow the RPM 2.02 heads at all rpm's or just at peak ?
From the info I've been told it has said for the small price difference the 2.02 valve RPM head is the only way to go ?
Those are actually average flow numbers from .200 inches lift to .500. I got these numbers from this source:
http://www.fordmuscle.com/archives/2003/02/afr/index2.shtml
Check it out there are flow numbers for a wide array of SBF heads.
You can see the AFR 165 head blows the Edelbrock Head out of the water at every point of lift. Of course the Edelbrocks would probably put up pretty stout numbers too if treated to the CNC porting the AFR heads come factory with.
The "smallish" AFR 165 heads held right with the Twisted Wedge heads despite being down on intake runner volume and valve size. And if you look at the AFR 185 flow numbers here http://www.airflowresearch.com/pages/images/charts/185cc-Ford-Head-Flow-Graph.gif
you see some really amazing numbers. I would reall look into the AFR 185s Scoop, for your application they would be perfect. It would be hard to find a "street" head that outflows the AFR 185s outta the box. But you do pay for it, $1,350 for a pair ain't cheap, but it might be worth the extra money $300 over the E-brocks. I would imagine that 282S cam and these heads with the RPM intake would make some absolutely killer power Paul
------------------
1970 Grande
H code 351W FMX
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