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Old 05-17-2011, 04:01 PM
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my first build gm 383 stroker in 81 cutlass

My first build. Its a 81 cutlass with a fresh built gm 383 stroker. Bored 0.60 over not sure if I'm gona have wall issues. Have no idea what compression ratio it has. Just scored a killer paying job. Have been building car for 4 years and want to do it right. I've started it twice open headers that don't fit. Any advice would help

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Old 05-17-2011, 04:11 PM
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Quote:
Originally Posted by 81 stroked cut383
My first build. Its a 81 cutlass with a fresh built gm 383 stroker. Bored 0.60 over not sure if I'm gona have wall issues. Have no idea what compression ratio it has. Just scored a killer paying job. Have been building car for 4 years and want to do it right. I've started it twice open headers that don't fit. Any advice would help

ok so what is it you are trying to accomplish? what is it you want to know?
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Old 05-17-2011, 04:44 PM
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Well I'm trying to accomplish 500 plus hp on the motor with forced induction with out blowing my motor, tranny or diff. It has a turbo 400 with a b&m 2500 stall converter. Stock rear end. Replacing with eaton posi verry soon. Do I need to sleeve the block? Shud I replace the 194 t vorteh heads to get more power flow? What gear ratio for rear diff would you reomend?
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Old 05-17-2011, 05:00 PM
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Quote:
Originally Posted by 81 stroked cut383
Well I'm trying to accomplish 500 plus hp on the motor with forced induction with out blowing my motor, tranny or diff. It has a turbo 400 with a b&m 2500 stall converter. Stock rear end. Replacing with eaton posi verry soon. Do I need to sleeve the block? Shud I replace the 194 t vorteh heads to get more power flow? What gear ratio for rear diff would you reomend?
first off IMO you dont need forced induction to make 500HP the trans will need to be worked over to handle 500+HP you will be looking at a stall of about 3500-4000 rear end i would say 4.10 if you are on the track 3.73 if this is a highway driver, you shouldn't need to sleeve the block unless there is something wrong with your cylinders bc in order to put a sleeve in the machine shop has to cut away even more material in order to fit the sleeve then they have to bore the sleeve out to which ever size you would to have, as far as the heads are concerned iv never build a vortec before so i cant speak on that unless you fill me in more on what you are trying to accomplish my engines are usually for the track or for a muscle car so im usually going for torque and overall power hope this helps , the devil is in the details fill us in on what you are using the car for, what your goals are , whats your budget?
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Old 05-17-2011, 06:11 PM
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I'm building the car for street/ strip. I want to get it on the track and also to put some punk in a honda in his place on the street. My budget was initially 4 grand. I've tried to researh my vortec heads but have not ran casting numbers yet. I've spent about 2800 on the build. Looks like I'm gona have to up my budget. Ill be pulling in about 7 grand a month depending on who I work for so shudnt be a problem. How long have you been turning wrenches?
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Old 05-17-2011, 06:38 PM
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iv been working on muscle cars for almost 10 years now, honestly a naturally aspirated engine will do you bette ron the street IMO and it wont hurt the wallet to much im having an engine built professionally for bracket racing and im in it for almost 10 grand and its not done yet haha but thats a 600HP SBC no boost
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Old 05-17-2011, 07:06 PM
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10 grand! Is that just on the motor, or suspension too? That's another thing I'm siting on stock suspension, and its pretty much shot any reomendations?
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Old 05-17-2011, 09:40 PM
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thats all engine buddy haha its not cheap making reliable horse power and being this is a "stock" car its very heavy so takes allot of ponies to get her running at full steam
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Old 05-17-2011, 09:50 PM
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First of all, a 383 is a 4.030 bore, 3.75 stroke. If you have a 3.75 x 4.060 you have a 388. You don't "need" forced induction for 500 hp, but it makes it easy, although it would need good internal parts. A 500+ hp NA motor won't have good street manners.
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Old 05-17-2011, 10:01 PM
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amen to that nova , i wont be able to run on the streets, dont really get to far with 12.5:1Cr running on 110 octane lol
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Old 05-18-2011, 10:33 AM
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So being that I got the block internally pre assembled off the street and then put the rest together, I'm gona have to tear it all back down and run the part #s to know for sure what I truely have right?
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Old 05-18-2011, 11:10 AM
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thats the only way you will find out for sure unless the guy you got it from has his recipts
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Old 05-18-2011, 12:03 PM
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Thanks man ill post more when I get to that process you've been a good deal of help for me on this
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Old 08-30-2011, 01:12 AM
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heyy any updates on this thread???
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Old 08-30-2011, 08:15 AM
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The dream faded???
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