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

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Old Aug 3, 2018 | 03:11 PM
  #21  
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Originally Posted by Krusty84
It will trap 90-92 mph in the 1/8 and 115-117 in the 1/4
My best with the dragy is a 12.84 @ 115 w/ a 2.3 sixty foot.
That's a ~450 chp car, to me.

I agree that you could go mid-low 12's with that on a good launch.
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Old Aug 3, 2018 | 07:37 PM
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Originally Posted by cuisinartvette
Its an El Camino..385 wiht some compression, big solid roller, 230cc head ported single plane 850etc T56 4.11
Come on Ronny. You'd be seeing Corvette LS7 tails accelerate in the distance.
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Old Aug 3, 2018 | 07:52 PM
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Originally Posted by Tom400CFI
That's a ~450 chp car, to me.

I agree that you could go mid-low 12's with that on a good launch.
I don't doubt it on that night, it was still 95 degrees around 1 am when I made the pass.

Edit: Also, looking back at the data from that 12.84 run it took 5.10 seconds and 230 feet to reach 60 mph. She makes more power than the numbers would indicate.

Last edited by Krusty84; Aug 3, 2018 at 08:01 PM.
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Old Aug 4, 2018 | 08:35 AM
  #24  
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Originally Posted by 88BlackZ-51


Come on Ronny. You'd be seeing Corvette LS7 tails accelerate in the distance.
That actually sounds like a pretty capable powertrain/drivetrain combo against a stock LS7 car.
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Old Aug 4, 2018 | 09:14 AM
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Ricky I race cars not dyno sheets. Good friend of mine with a 67 Camaro has a 350 making at least 80hp less that blows my doors off.
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Old Aug 5, 2018 | 11:54 AM
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Originally Posted by cuisinartvette
Ricky I race cars not dyno sheets. Good friend of mine with a 67 Camaro has a 350 making at least 80hp less that blows my doors off.

Glad you havent changed!
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Old Aug 5, 2018 | 09:41 PM
  #27  
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Originally Posted by ddahlgren
I see that extra HP almost free with no loss in low end or at least low end for a sports car for virtually free when buying the 195 heards. I am betting the upgrade to 210 or 215 was very minimal at the time. If a 6 speed track car drive through 3000 rpm so fast it does not matter and should never see it again.
All true, but if you looked at my original post, you will notice that the heads came from a 350 I was running - which would have sucked with 210 or 215 heads on it until it was above 5 grand - no pun intended If I wanted a dyno-queen number a bigger intake and cam revving to the sky would certainly put down bigger max. HP numbers, but I want a combination that can live life on the road course for years without demolishing valvesprings and that can be cooled adequately so I don't have to pull off the track every 10 minutes to let it cool down - which is harder to do where I live up in the thin air. I was simply posting so somebody can see what this combo does or doesn't do and decide if it is for them or how they might want to tweak it based upon their goals. I was also posting to dis-spell the rumor that an engine of this type does better with larger aftermarket throttle bodies which actually lost me power.

BTW, I have seen multiple dyno sheets of LS7s that are within 5 HP +/- at the rear wheels of the results I posted with less torque. That being said, I liked what somebody else said - I don't race dyno sheets I race cars On that front I have not found an C6 Z06 in stock form - and one that wasn't stock, that isn't about a car length or two behind me on a long straight. Accomplished exactly what I was looking for.

If I ever feel like I need more, I agree, a larger CC head and ported intake would be in the offering. But I can't see spending $3,000 for 50-60 HP when I could get more out of my lap time by $3,000 worth of seat time - and have a lot more fun doing it

--Calvin

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Old Aug 30, 2018 | 10:56 PM
  #28  
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Just FYI - I took it to the dragstrip and with sticky street tires ran a 12.57 @ 112mph at a density altitude of 7900 feet - Bandimere speedway in Denver. Equates to an 11.51 at 122 at sea level. That was with a 1.9 sixty foot time. The car weighed in at exactly 3500 lbs with me in it at 180 lbs.
--Calvin
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Old Aug 30, 2018 | 11:36 PM
  #29  
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Damn....112 on a 7900 DA is a good running car!
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