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Author
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Topic: 383 stroker c build/Did I overlook anything
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prostreeter
Gearhead Posts: 437
From: littleton,co
Registered: Mar 2005
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posted 03-30-2005 05:22 PM
 
Hey Guys,new to mm.Just built a new clev stroker.Will fire it up for the first time next week end.Would like to know if you feel I may have overlooked any part of the build and what's your HP thoughts.Here's what I've got....1971 351cj block bored .30 over,decked to square,sonic tested/magnafluxed,oil mods,all arp h/w,scat 9000 steel forged crank,3.750 stroke,scat steel forged 6" rods,ross domed racing pistion w/titanium pins,piston volume is 12cc,crane 256/266 @.050 dur and 629 intake,610 exhaust,110 lob sep,advanced 4 degrees.crane solid lifters,crane gold rockers w/girdle,13:92.1 compression,double roller chain,1971 boss 351 heads,quenched,closed chamber 62cc comb chamber volume,3 angle valve job,screw in studs w/guide plates,ported @ polished with aluminum exhaust ports,titanium intake and ss exhaust valves,heads flow 335cfm intake and 229cfm exhaust,5/16" one piece pushrods,hv oil pump w/chromemoly drive,holley strip dom with expoxey filler,holley 1000cfm carb,2 1/4" custom hand made headers,32" primary tubes.rollerized c4 with 8" converter,4500 stall,4.56 gear ratio,32x18.50 mt slicks.What do you guys think of the build and is there anything I may have missed.The car will see alot of street use and occasional track.It was built to be a chevy killer.Thanks in advance.
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Daniel Jones
Gearhead Posts: 972
From: St. Louis, MO
Registered: Aug 99
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posted 03-30-2005 06:17 PM
> scat 9000 steel forged crankThe SCAT 9000 series is not a steel forging. The call it cast steel
and it's similar to nodular iron. Did you use the snout spacer? Dan Jones
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68F100
Gearhead Posts: 2835
From: Burlington, Iowa
Registered: Oct 99
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posted 03-30-2005 06:19 PM
Sounds like it could sure kill some Chebbies!Welcome to M&M  What vehicle is it in?
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grego37
Gearhead Posts: 411
From: los angeles,CA,USA
Registered: May 2004
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posted 03-30-2005 06:22 PM
I'd upgrade to 3/8" hardened pushrods (with oil holes)You plan on running race gas, right? If it's the first time firing up make sure you break in cam properly. Cheers!
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prostreeter
Gearhead Posts: 437
From: littleton,co
Registered: Mar 2005
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posted 03-30-2005 06:39 PM
Thanks for the info.Did'nt use snout spacers,dont even know what they are.Will this crank hold up.I dont plan on spinning it past 7k.The motors going into a 69 pro street mach 1 and 110 octane fuel will be used.Sounds as though the weakest part of the build is the crank?
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clevelandstyle
Gearhead Posts: 1558
From: central Indiana
Registered: Jul 2001
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posted 03-30-2005 09:05 PM
Welcome to M&M! Nice to have another Cleveland guy here.
Your crank should be fine. It sounds like a serious street build. Maybe a bit much compression for a street engine. My 408C is only 11:1 and runs on pump gas. Best time to date is 10.50@127mph with 10" DOTs. I don't know what you are expecting, but I think you'll be happy with the power.
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Ben
Grabber Green '70 Mach I 351C 4V
Robbin Egg Blue '79 Fairmont 408C 4V, 10.50 127 MPH
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kid vishus
Gearhead Posts: 7251
From: middle of NC
Registered: Oct 2000
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posted 03-30-2005 10:23 PM
Welcome to M&M. Nice to have another cleveland lover around.  Most of the stuff I have built is mostly race oriented, so there are a few things about your build I would have done differently. I would definately swap out the wipy 5/16 pushrods for some .060 or .065 wall 3/8" pushrods. Something I would have changed in the original build is, I would have probably picked a cam with a little more duration and a tighter lobe seperatioon. The cam you picked in a motor that size will probably make peak power under 6500 rpm, and probably closer to 6200. It will rev to the moon, but wont make good power up there.
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Rob Hetzler
M&M member #773
'69 mustang, 351C, best 9.97 @ 133 mph 1/4, 6.18 @ 110.4 1/8 (til it blew up), now 402" clevor powered
'70 mustang,351W powered (KK's racecar)
'93 F150 Lightning 15.33 @ 87 mph, completely stock with 199k miles
'93 F350 dually quad cab diesel (tow truck for the racecars)
'60 Falcon wagon project car
'99 Pro Et track champion
'00 Mod ET R-up (with new car) My Photo Page
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prostreeter
Gearhead Posts: 437
From: littleton,co
Registered: Mar 2005
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posted 03-31-2005 12:35 AM
Clevelandstyle.....I'm running this car at 5500 elevation.Bandimere speedway does not open until end of april...will post the times then.kid...took your advise and the 3/8 pushrods will be here in the next couple days...plenty of time before the motor goes in.What would your cam selection be.If I keep the cam i've got....whats your hp guess and et in a 2950lbs car?
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kid vishus
Gearhead Posts: 7251
From: middle of NC
Registered: Oct 2000
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posted 03-31-2005 07:47 AM
Given the convertor you have, I would probably leave the camshaft you have in it for now. My c4 convertor flashes around 6200, so that tends to make me want/need more camshaft.Just out of curiousity, what brand is the convertor?
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prostreeter
Gearhead Posts: 437
From: littleton,co
Registered: Mar 2005
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posted 03-31-2005 08:20 AM
The converter is a TCI.The trans came w/the car.I have'nt really done anything to it...Kid,This is my 1st real nasty car.Desk top dyno claims 612hp at 6500rpm.I know thats merely speculation but since you know clevelands whats your hp...et thoughts.
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prostreeter
Gearhead Posts: 437
From: littleton,co
Registered: Mar 2005
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posted 03-31-2005 08:31 AM
Added....clevelands are very rare in my area...everyone builds chevys.even the locale speed shop cater to gm.they are not very helpful when I walk in the door.P.S.... Read in super chevy that the GM finance office opened a new branch... They now accept food stamps for hipo parts! How can us fordlovers win with that.
May the "FORD" always be with you.
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kid vishus
Gearhead Posts: 7251
From: middle of NC
Registered: Oct 2000
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posted 03-31-2005 09:05 AM
I really don't know what it will run. You are at a much higher elevation than I have any experiance with, and elevation kills ET. I would think mid 10's would be easily within reach in 'normal' elevations.My guess at hp would be somewhere around 570-580, and probably around 6000-6200. For quickest et's, you will probably want to change convertors. TCI stuff is barely mediocre. A good custom built convertor will make it quicker, but costs a lot. Especially since you already have the TCI. Running parts you already have is the same reason I have the junk convertor in my car now.
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clevelandstyle
Gearhead Posts: 1558
From: central Indiana
Registered: Jul 2001
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posted 03-31-2005 12:20 PM
quote:
Originally posted by kid vishus:
For quickest et's, you will probably want to change convertors. TCI stuff is barely mediocre. A good custom built convertor will make it quicker, but costs a lot. Especially since you already have the TCI.
I'll second that. A "good" converter makes makes a world of difference.
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Ben
Grabber Green '70 Mach I 351C 4V
Robbin Egg Blue '79 Fairmont 408C 4V, 10.50 127 MPH
[This message has been edited by clevelandstyle (edited 03-31-2005).]
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Daniel Jones
Gearhead Posts: 972
From: St. Louis, MO
Registered: Aug 99
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posted 03-31-2005 01:26 PM
> Didn't use snout spacers, don't even know what they are.The Cleveland cranksshaft snout has a "snout ring" ahead of the #1 main,
to space the lower sprocket out to clear the journal. Windsors have a
collar on the back of the sprocket and are machined flat ahead of the
journal. The Cleveland crank snout is longer than the Windsor one. Most
aftermarket "Cleveland style" cranks are in fact Windsor cranks machined
to Cleveland main journal size. They use the Windsor snout. Ford
Motorsport makes a spacer (part number M-19009-A341C, required with 351
SVO crankshaft when used in production 351C engine) will fix the problem.
The spacer is not a press-fit and you can push it on by hand. There are
true Cleveland spec aftermarket cranks but they tend to be custom order. > Will this crank hold up. I don't plan on spinning it past 7k.
> The motors going into a 69 pro street mach 1 and 110 octane fuel
> will be used. Sounds as though the weakest part of the build is
> the crank? I went with a SCAT 4340 forging myself but I wouldn't sweat the
9000 series crank. I know of several engines running them successfully. Dan Jones
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prostreeter
Gearhead Posts: 437
From: littleton,co
Registered: Mar 2005
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posted 03-31-2005 02:57 PM
Hey Dan...Thanks for the info.I hired a neighborhood engine builder to help me put this motor together since I have no experience.Ok,for the bad news.....He's a GM performance dude and has only put a few race clevelands together.I'll have to ask if we used a snout spacer....I have no clue if we did.
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