LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Low compression #s

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Old May 2, 2012 | 08:45 AM
  #1  
leftoverz28's Avatar
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Low compression #s

Finally getting ready to get my car on the road after a bit of a tear down and was wondering if anyone on here had any idea what kind of power a 383 with 8.5:1 compression, ported Trickflows, intake, and 58 mil. throttle body and a blower cam might put down N/A. I need to size the injectors and am not exactly sure what to expect. The car will eventually get a set of twins and 72lbers, but its been off the road for about two years and absolutely needs to be driven this summer.
Any help/advice would be awesome.
-Mike
Old May 2, 2012 | 09:58 PM
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Jasonz28camaro's Avatar
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From: Tx
Re: Low compression #s

i have about the same setup NA and i used 30lbs. the car only made 370/370ish RWHP but ran 11.7s. you dont need much fuel, save your money and by cheap injectors until you do boost. Im not exactly sure if its a 9:1 by the way seen in my sig. It might be somewhere lower or even higher. I did a compression test the other day and it made right around 150psi on the cylinders. With the math and my setup its supposed to be 8.X:1, cant remember?? hope this helps.

I have my 30lbs if you want them, $100.

Last edited by Jasonz28camaro; May 2, 2012 at 10:01 PM.
Old May 3, 2012 | 08:06 AM
  #3  
leftoverz28's Avatar
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Re: Low compression #s

What heads are you running?
Auto or stick?
Old May 3, 2012 | 09:31 AM
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Jasonz28camaro's Avatar
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From: Tx
Re: Low compression #s

Originally Posted by leftoverz28
What heads are you running?
Auto or stick?
its all in my sig.

4L60e / Stock cast Lloyd Elliot II Heads
Old May 3, 2012 | 11:04 AM
  #5  
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Re: Low compression #s

At 8.5:1 I don't even think it will burn efficiently. That is too low even for a blower build. I think bolton cars are going to give you a hard time from a dig.
Old May 4, 2012 | 08:42 AM
  #6  
leftoverz28's Avatar
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Re: Low compression #s

How do you figure?
I haven't seen or heard of too many bolt on cars running 11.7s or pushing 370 to the wheels.
I know personally my motor made about 640hp with a D1SC on about 14 lbs.
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