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Author
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Topic: how can i get 500 horses out of my 351w
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THUMPING COUGAR
Journeyman Posts: 55
From:
Registered: Mar 2001
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posted 11-24-2001 08:51 PM
   
my goal horsepower for my 351w is 500 horsepower i dont know really what i would have to do to achive this all the combinations of parts i put together dont add up it seems imposible can someone please tell me what to do. and also is the super victor a good manufold or could i get more horsepower out of the victor jr
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7DMACH1
Gearhead Posts: 802
From: PHILA. PA.
Registered: Feb 2001
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posted 11-24-2001 08:56 PM
I GOT 537HP @6300RMP OUT OF A 351C STROKED TO 408. ROLLER CAM 244@50 WITH 623 LIFT. TORKER INTAKE, 800 DOUBLE PUMPER AND PRETTY MUCH STOCK HEADS. I THINK WITH A WINDSOR AND A GOOD SET OF HEAD IT SHOULD BE NO PROBLEM.------------------
RAY . FLY THE FLAG, SHOW THE WORLD WE ARE PROUD AMERICANS!70 MACH 1 351C NOW 408 STROKER 4SPD.
86 MERCURY CAPRI 5.0 RUNS 12.86 @107 1.65 60 ft.
2001 LINCOLN LS V8 1997 MUSTANG
SHOW THE WORLD, LIGHT A CANDLE.
http://www.geocities.com/slariviere/7DMach1.html
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badazzcougar
Gearhead Posts: 132
From: Seattle
Registered: Oct 2001
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posted 11-24-2001 09:45 PM
Ive got a spare 4 Bolt main 4V-351C laying around and Ive thought about either stroking it or building a blower motor but blower setups for 351C's dont seem to be falling from trees it seems. That 408 idea sounds pretty good. whats the most cost effective way of doing it? Are you using chevy rods and offset grinding the crank? What about pistons. What was the bottom line on a build like that?Also anyone know of a blower manifold for 351 clevelands?
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7DMACH1
Gearhead Posts: 802
From: PHILA. PA.
Registered: Feb 2001
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posted 11-24-2001 10:25 PM
Cost me about 6,000.00 to have it built by a engine builder. It's a scat crank and rods with JE piston, 11-1. Bore 4.030 stroke 3.850.
Rods h-beam 6.200 See Scats web site. It is a windsor crank they use and they had to make a spacer for the damper. RAY
http://www.scatcrankshafts.com/smblkfordrotating.html
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RAY . FLY THE FLAG, SHOW THE WORLD WE ARE PROUD AMERICANS!70 MACH 1 351C NOW 408 STROKER 4SPD.
86 MERCURY CAPRI 5.0 RUNS 12.86 @107 1.65 60 ft.
2001 LINCOLN LS V8 1997 MUSTANG
SHOW THE WORLD, LIGHT A CANDLE.
http://www.geocities.com/slariviere/7DMach1.html[This message has been edited by 7DMACH1 (edited 11-24-2001).] [This message has been edited by 7DMACH1 (edited 11-24-2001).]
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badazzcougar
Gearhead Posts: 132
From: Seattle
Registered: Oct 2001
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posted 11-24-2001 11:07 PM
I did the math a few times there 7DMach1 and every time it came up with a few missing cubes. More like 18 missing cubes. How do you come up with 408 cubic inches out of that bore and stroke combination? I'm coming up with about 390 cubes by my math. To come up with a 408 you'd have to use a 4.025 stroke crank with the 4.03 bore . Are you using an M block or a 351C ? That might be more stroke than I am comfortable with in a short deck 351 C block. Thats got to have a huge amount of lower end torque but its got to be a bit soggy on the top end. Anyone know of a blower manifold for the 351C [This message has been edited by badazzcougar (edited 11-24-2001).]
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7DMACH1
Gearhead Posts: 802
From: PHILA. PA.
Registered: Feb 2001
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posted 11-24-2001 11:15 PM
Sorry try 4.000 stroke. Sorry that's a 393. RAY------------------
RAY . FLY THE FLAG, SHOW THE WORLD WE ARE PROUD AMERICANS!70 MACH 1 351C NOW 408 STROKER 4SPD.
86 MERCURY CAPRI 5.0 RUNS 12.86 @107 1.65 60 ft.
2001 LINCOLN LS V8 1997 MUSTANG
SHOW THE WORLD, LIGHT A CANDLE.
http://www.geocities.com/slariviere/7DMach1.html
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7DMACH1
Gearhead Posts: 802
From: PHILA. PA.
Registered: Feb 2001
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posted 11-24-2001 11:21 PM
Now you got me thinking, he had custom pistons made wouldn't the wrist pin and hieght of piston matter? Ray------------------
RAY . FLY THE FLAG, SHOW THE WORLD WE ARE PROUD AMERICANS!70 MACH 1 351C NOW 408 STROKER 4SPD.
86 MERCURY CAPRI 5.0 RUNS 12.86 @107 1.65 60 ft.
2001 LINCOLN LS V8 1997 MUSTANG
SHOW THE WORLD, LIGHT A CANDLE.
http://www.geocities.com/slariviere/7DMach1.html
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badazzcougar
Gearhead Posts: 132
From: Seattle
Registered: Oct 2001
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posted 11-24-2001 11:26 PM
sure it would. I dont see how you wouldnt have the wrist pin up into the oil ring groove with a 6.2" rod in a 9.2" deck block. Either that or you'd have insufficient skirt to stabilize the piston in the bore. I think I'll shy away from that one. In a windsor it wouldnt be a problem with its higher deck but with that combo I'd be afraid of breaking stuff.
That big 6-71 air compressor is sounding better all the time. Cleveland blower manifolds anyone? [This message has been edited by badazzcougar (edited 11-24-2001).]
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7DMACH1
Gearhead Posts: 802
From: PHILA. PA.
Registered: Feb 2001
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posted 11-24-2001 11:30 PM
Try this for you manifold. http://www.racesearch.com/CGImp/mhp?man=1166&sort=PRICE&engtype=0&Try+Again=Try+Again&mode=sbpn&cat=2939 ------------------
RAY . FLY THE FLAG, SHOW THE WORLD WE ARE PROUD AMERICANS!70 MACH 1 351C NOW 408 STROKER 4SPD.
86 MERCURY CAPRI 5.0 RUNS 12.86 @107 1.65 60 ft.
2001 LINCOLN LS V8 1997 MUSTANG
SHOW THE WORLD, LIGHT A CANDLE.
http://www.geocities.com/slariviere/7DMach1.html [This message has been edited by 7DMACH1 (edited 11-24-2001).]
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7DMACH1
Gearhead Posts: 802
From: PHILA. PA.
Registered: Feb 2001
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posted 11-24-2001 11:35 PM
I just found the engine spec sheet from the builder. It's 4.030 bore 3.85 stroke and 6.200 rod with custom JE piston. He didn't like the 4.0 stroke. Most 347 strokers have the wrist pin in the ring land. I know a lot of people running them with no problem. There were problems with the early ones but they have fixed it. RAY------------------
RAY . FLY THE FLAG, SHOW THE WORLD WE ARE PROUD AMERICANS!70 MACH 1 351C NOW 408 STROKER 4SPD.
86 MERCURY CAPRI 5.0 RUNS 12.86 @107 1.65 60 ft.
2001 LINCOLN LS V8 1997 MUSTANG
SHOW THE WORLD, LIGHT A CANDLE.
http://www.geocities.com/slariviere/7DMach1.html
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badazzcougar
Gearhead Posts: 132
From: Seattle
Registered: Oct 2001
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posted 11-24-2001 11:45 PM
ooh oooh oooh ooh ooh ooh ooh ooh ! BDS ... Here I come. Of course my wife might have something to say about this but hey... I can always get her a second job! Kind of sucks figuring out you just lost 15 cubic inches doesnt it. To be honest for the 6K I think I could build a hell of a 540 .
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Clevo377
Gearhead Posts: 255
From: Blackburn, Victoria, Australia
Registered: Nov 2000
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posted 11-25-2001 01:40 AM
Ray, It looks like you need to update your signature to "NOW 393 4 SPEED". What it means is you got 537Hp out of a 393!! Way to go  Paul
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TomP
Gearhead Posts: 3609
From: Delta BC Canada
Registered: Dec 99
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posted 11-25-2001 01:49 AM
ZOINKS!!  those blower manifolds are just a wee bit pricy aren't they? I'm pretty sure they are double what i've seen them for elsewhere.
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badazzcougar
Gearhead Posts: 132
From: Seattle
Registered: Oct 2001
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posted 11-25-2001 02:00 AM
I think I'm going to be shopping the used blower manifold market myself
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stang106
Gearhead Posts: 314
From: God's Country!... Port Alberni B.C. Canada
Registered: Jul 2001
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posted 11-25-2001 02:04 AM
THUMPING COUGER:
I'm not sure where you're from, but I buy my parts from Alberta, Canada, where ther is less taxes, and a deal for Americans. They just put it on a bus and I get the oarts the next day. The place is called 'Prostock' and they do machine work, dyno, flow heads and intakes, but best of , provide great technical help. They have dynoed and sell a proven 500 HP 351W combination that is 10:1 compression and uses a Scat stroker crank. Its about $4,000.00 to put together a motor and they sell tons of them. Don't forget if yopu are American you only pay .64 cents of our dollar or $2560.00 American for the parts. I have their phone number, they also have a website.
Dave------------------
'70 ragtop Stang
"I live my life 16.090 seconds at a time"
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stang106
Gearhead Posts: 314
From: God's Country!... Port Alberni B.C. Canada
Registered: Jul 2001
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posted 11-25-2001 02:06 AM
Oh yeah, a local mud racer has one, it also produces over 500 ft/lbs of torque. His motor has stayed together for a few seasons with no problems.
Dave
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Fastymz
Gearhead Posts: 3433
From: Reno Nv MEM#1240
Registered: Apr 2001
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posted 11-25-2001 02:41 PM
THUMPING COUGAR,I'd stay with the VictorJR.Go with a good set of aftermarket heads.Good set of headers.The main thing with these motors is to let them breath.And you'll be on your way.I'm no expert just have done some reading,and kepping an eye on this site.Ron
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65 Coupe with a 351w, RPM intake,carter625,shorty 1-5/8 headers,2.5 exhaust,Flowmasters,stock C4,peg leg 8" 2:80,Big Boss 429 hood scoop,Cragers SS,Black Suede finish.
MEM#1240 https://mustangsandmore.com/ubb/Fastymz.html
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Fastymz
Gearhead Posts: 3433
From: Reno Nv MEM#1240
Registered: Apr 2001
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posted 11-25-2001 02:43 PM
quote:
Originally posted by Clevo377:
Ray, It looks like you need to update your signature to "NOW 393 4 SPEED". What it means is you got 537Hp out of a 393!! Way to go Paul
Ray,this is the only way to look at it.  Ron. ------------------
65 Coupe with a 351w, RPM intake,carter625,shorty 1-5/8 headers,2.5 exhaust,Flowmasters,stock C4,peg leg 8" 2:80,Big Boss 429 hood scoop,Cragers SS,Black Suede finish.
MEM#1240 https://mustangsandmore.com/ubb/Fastymz.html
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THUMPING COUGAR
Journeyman Posts: 55
From:
Registered: Mar 2001
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posted 11-25-2001 03:21 PM
so do i have to stroke my motor to get 500 horses or is there a way around that, how about porting gt-40 heads
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F551
Gearhead Posts: 124
From: Manitoba, Canada
Registered: Nov 2000
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posted 11-26-2001 10:52 AM
Ny brother's old motor was a .030" over 351W - it dynoed at 497 HP (close enough?).Used ported Performer RPM heads and a Victor JR. with a Holley 850. Mild solid lifter cam with about 10.5 /11 to 1 compression. Car ran low 11 - a 10.95 on an excellent day in a 67 fastback with a glide. ------------------
Fred
68 Mustang 500CID/Powerglide - "No Tubs"
86 Mustang GT Cobra
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bluestreek
Gearhead Posts: 607
From: Athens,GA
Registered: Jul 2001
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posted 11-26-2001 02:30 PM
quote:
Originally posted by THUMPING COUGAR:
so do i have to stroke my motor to get 500 horses or is there a way around that, how about porting gt-40 heads
The GT-40s are not worth the time and money to get 500 HP out of them.. Throwing on a new set of Roush/World (formerly Windsor Jr/Sr) 200 CC heads ($750) and a Victor jr intake ($219) and a good 240-250 duration cam,lifter,springs, and roller rockers, should get in the 450-475 HP range for a lot less than stroking it would..
Flow and compression is what makes HP !!
More cubic inches increases TORQUE and the potential for more HP, but not without more flow.
When you put it all together you start breaking things!! 
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