C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

dyno at carlisle

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Old Aug 29, 2005 | 09:55 AM
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Default dyno at carlisle

hi guys,
while at carlisle, i had my car dynoed. 93 stock with gregs (blower works) complete system and his chip.
404 hp @ 5500 rwhp, 403 tq @ 4800 rwtq.
mo, greg was right on, the mans got it.
hes the man. thanks greg, the 383 should fly when we are done.

Last edited by bacardioil; Aug 29, 2005 at 10:14 AM.
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Old Aug 29, 2005 | 06:41 PM
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wow those are good numbers!

how many psi?
Auto or 6sp?
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Old Aug 29, 2005 | 07:30 PM
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thanks,
its an S trim greg has it set-up that its running 13psi and its an auto, greg thinks when we get the 383 in that we should see close to 550 rwhp. we shall see. greg worked on the car until it was right on.

Last edited by bacardioil; Aug 29, 2005 at 08:36 PM.
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Old Aug 29, 2005 | 07:35 PM
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13 pounds of boost and low 400's? sure about that? i would expect something nearer 500+ at 13 psi... better take a peak at your MAP pressures again, too make sure it is seeing that kind of pressure.. i venture your closer to 8-9 pounds. but i could be wrong..lol

Chris
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Old Aug 29, 2005 | 07:38 PM
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I agree that 13 psi and 400RWHP seems a bit low. That's a lot of boost, but I guess if it was in the 275RWHP stock, 125 RWHP gain is still respectable.

Aaron
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Old Aug 29, 2005 | 07:42 PM
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chris
it runs 13psi, greg did this car himself. its right, mo was at gregs home and was in the car. 400 are very good # for a stocker with gregs complete system.
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Old Aug 29, 2005 | 07:46 PM
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i would think 125 rwhp is a great gain that works out to about 480hp at the flywheel on a stock lt1.
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Old Aug 29, 2005 | 07:48 PM
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Originally Posted by bacardioil
chris
it runs 13psi, greg did this car himself. its right, mo was at gregs home and was in the car. 400 are very good # for a stocker with gregs complete system.
I agree! 400 for a bone stocker auto LT1 and 13 psi is good!
Stock auto LT1 are around 260.

Are you intercooled?
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Old Aug 29, 2005 | 07:58 PM
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thanks paul,
i like your rides. yes they are very good # for a bone stocker, no intercooler just gregs complete system. his system works. greg used the car as a proto for his new 8 rib belt system that what gave the 13 psi. no slipping.

Last edited by bacardioil; Aug 29, 2005 at 09:11 PM.
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Old Aug 29, 2005 | 10:05 PM
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thats cool man, I suppose that could be the case, ther eis some loss from driving the charger, and i am sure that auto sucks up some juice, I was just looking at the power gain per pound of boost and it was coming up a little low from what i would have expected, i guess roughly it equates to about 11hp per pound in your case which is not too shabby on a belt driven setup, but 13 pounds on the gm bottom... .. you must be in a hurry to get that 383 plopped in... I like your style man!
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Old Aug 29, 2005 | 10:21 PM
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icvett
i know greg and i are wondering whats going to go first, engine or trans. or both. but the thought was i'll have to get the 383 done faster and the # are speeding up things. just waiting on the heads to come. greg and i have become good friends, his system works and when i listen to what he says, i cant go wrong. his knowledge on supercharging and his system says it all by these #s. timing is 26 and a little fat to last on fuel.

Last edited by bacardioil; Aug 29, 2005 at 10:34 PM.
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Old Aug 29, 2005 | 10:30 PM
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oh I agree Greg is a hell of a guy from his preceeding reputation, I was just wondering if he tuned it super conservative on the timing side for you to see that kind of boost but with 11 ponies per pound, backing the timing out leaves alot on the table, but is MUCH safer which is likely what he did to try and prolong the life of that poor beaten bastard of a motor you are running on borrowed time..lol

My guess is you end up pushing the dome of one of the hypers through itself and make a very beautiful silver concoction in the oil pan of fried oil and finely minced aluminum powder..lol but i agree, get that stroker built and get all your goodies strapped to it and let greg go through and tune it in being able to add some timing on the new lower compression motor and your gonna squeel like a school girl the first time you put your foot in it after break in..lol

and when it gets too comfortable to drive and you used to it, see if he can bump ya up to a T-trim unit... ah hell it never ends..lol 2 years and we'll be seeing posts of the F1R you are putting on cause you're so close to the 850 rwhp mark.. its just so damn fun to have lots of power..lol

Chris
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Old Aug 29, 2005 | 10:46 PM
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chris,
greg says the same thing ragged edge. poor pistons. ck out jerkyboys dyno at carlisle. that motor sounds bad. 434cc. i ran two cars after him.
oh yes greg and i did talk about the t-trim. engine cr will be 9.0, dyn cr will be 7.86. 383 should put up some #s. engine is being done right. nothing cheap. sent back a set afr 195 heads last month didnt like the spring pockets, oil returns and push-rod holes. getting a set of lt4 heads done up right. flow should come in at about 290 I 205 E. looking for low and mid #s. street car. high end #s arent worth beans on the street. whats it called light to light.
gene

Last edited by bacardioil; Aug 29, 2005 at 11:28 PM.
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Old Aug 30, 2005 | 03:28 AM
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Hi Zelement...

Barcardoil has Greg's Gen IV gaseous intercooler setup... (water alcohol injection)

Icevette, I was there when we were testing the car, yes we actually set the fuel on the conservative side I think it was averaging about 12.4's , and the advance I think was 25 or 26 degrees at WOT. He was hitting 13 pounds of boost, he has the recall boost gauge from autometer, whether the car was hitting it on the dyno could be a different story...

So yes you are right, there is still some left in it, but as you said better safe than sorry... That was Greg and my decision as well... Also we left the shift points at 5700 RPM's, so the numbers in my opinion while good are conservative...

I should have mine finished hopefully Wednesday, I got the 8 rib system as well and I put the S/C in tonight , I still have to run some hoses and I went and reworked a few things this time around... It will be interesting to see the difference between my old 7 rib and the new 8 rib...

Just kind of filling in the blanks for everyone...

Best regards,

mo
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Old Aug 30, 2005 | 07:55 AM
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13psi got you 404rwhp is not all that great. I personally witness a 95Z28 7psi procharged dyno tuned resulted 405rwhp ran 11.77 @117mph on a heavy car.. All stock, except header and flowmaster.
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