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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

What to shift at for a LT4

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Old May 14, 2011 | 08:46 PM
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Default What to shift at for a LT4
THE MOTOR HAS 5,000 MILES ON IT.IT IS A TRUE LT4 OUT OF 96 CORVETTE FROM CALIFORNIA.I BOUGHT THE ENGINE AND PULLED IT DOWN. THE BLOCK HAS BEEN BORED .030 OVER, WITH FORGED PISTONS. MACHINE SHOP LIGHTLY PORTED AND POLISHED AND DID A VALVE JOB ON THE FACTORY LT4 HEADS. IT HAS A COMP CAM WITH .579/.584 LIFT THAT IS HYDRAULIC ROLLER FROM SUMMIT..BRAND NEW VALVE SPRINGS THAT ARE GOOD TO .625 LIFT THAT CAME WITH THE CAM KIT.ALSO RETAINERS,LOCKS,ETC.TWIN 58 MM THROTTLE BODY, LONG TUBE HEADERS WITH OFF ROAD Y PIPE INTO FLOW MASTER MUFFLER. COMPUTER TUNED FROM PCM4LESS.COM. 1.6 ROLLER ROCKERS, SHORTY SHIFTER, COLD AIR INTAKE WITH K&N AIRFILTER.IT ALSO HAS A BRAND NEW STAGE 3 CLUTCH.THE REAR WAS CHANGED NOT EVEN 5 MILES AGO WITH 4.10 GEARS AND NEW INSTALLATION KIT.


So this being said , What should I shift at to get the most power ?

I am not sure what numbers it is putting down yet . But I just want a general Idea.
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Old May 14, 2011 | 08:53 PM
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whats the duration on the cam?
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Old May 14, 2011 | 08:58 PM
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I am not to sure , I just got the car not to long ago .
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Old May 14, 2011 | 09:01 PM
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without knowing the duration, i would say roughly 6300-6500
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Old May 14, 2011 | 09:03 PM
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Okay , Cool ... What numbers would you think it is putting down . The guy I bought it from said about 400 rwhp ..
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Old May 14, 2011 | 09:29 PM
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probably around 380-390 through an m6 (not sure what trans you have). Get rid of the chokemaster and you will see better numbers...
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Old May 14, 2011 | 10:49 PM
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Guessing from the lift #'s its the 242/248 cam, rev it as high as the pcm will let you.
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Old May 15, 2011 | 06:50 AM
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Originally Posted by coolmanvette75
probably around 380-390 through an m6 (not sure what trans you have). Get rid of the chokemaster and you will see better numbers...
It is a T-56 .

Thanks guys for your input !
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Old May 16, 2011 | 02:25 PM
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9k rpm
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Old May 17, 2011 | 06:10 AM
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Originally Posted by CustomX
9k rpm
Really wow ! Okay guess I can give that a try !
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Old May 17, 2011 | 07:25 AM
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Originally Posted by jmswain
Really wow ! Okay guess I can give that a try !
Come pick me up first.
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Old May 18, 2011 | 07:23 AM
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ummm no
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Old May 18, 2011 | 07:25 AM
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Originally Posted by jmswain
Really wow ! Okay guess I can give that a try !
Please video this and post it.
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Old May 18, 2011 | 10:47 AM
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what up with all the caps im wonder ?
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Old May 19, 2011 | 06:55 AM
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Originally Posted by killagt
what up with all the caps im wonder ?
I did not realize it untill after I was done typing . Lol , and I am to lazy to go back and retype it all .

Plus me and custom x know each other . I am deff not shifting at 9k lol .. no possible way...
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Old May 19, 2011 | 12:38 PM
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Originally Posted by killagt
what up with all the caps im wonder ?
He likes talking LOUD lol
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Old May 19, 2011 | 05:37 PM
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Originally Posted by CustomX
He likes talking LOUD lol

I AM NOT TALKING LOUD !!! lol
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