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

New CC306/stock heads times

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Old 09-19-2004, 06:44 PM
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New CC306/stock heads times

Ran a new best time at Cedar Falls, IA:
R/T: 798
60': 1.712
330': 5.035
1/8: 7.824
MPH: 87.82
1000': 10.239
1/4: 12.262
MPH: 111.68

Best 60' was 1.69
8 of 10 runs were in the 111 range, the other two were high 110!
4 runs were 12.31 or better, 4 12.5-12.4, and the other two were high 12's.
Ran on Nitto DRs @ 15psi

Last edited by ScreamnChicken; 09-19-2004 at 06:47 PM.
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Old 09-19-2004, 06:53 PM
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Re: New CC306/stock heads times

Great times, are you still full weight? Through in a bigger converter and you'll have 11s for sure.
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Old 09-19-2004, 06:55 PM
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Re: New CC306/stock heads times

full weight minus jack/spare tire
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Old 09-19-2004, 06:58 PM
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Re: New CC306/stock heads times

wow, sorry for the questions but were your dyno numbers with the converter locked or unlocked? They are pretty stout.
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Old 09-19-2004, 06:58 PM
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Re: New CC306/stock heads times

Sweet times! How was the weather?
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Old 09-19-2004, 07:08 PM
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Re: New CC306/stock heads times

mid 70s, low humidity.

The TC was locked on the dyno.
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Old 09-19-2004, 07:17 PM
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Re: New CC306/stock heads times

OH ya, you have some 11s in it with cooler air
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Old 09-20-2004, 12:03 AM
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Re: New CC306/stock heads times

Originally Posted by ScreamnChicken
Ran a new best time at Cedar Falls, IA:
R/T: 798
60': 1.712
330': 5.035
1/8: 7.824
MPH: 87.82
1000': 10.239
1/4: 12.262
MPH: 111.68

Best 60' was 1.69
8 of 10 runs were in the 111 range, the other two were high 110!
4 runs were 12.31 or better, 4 12.5-12.4, and the other two were high 12's.
Ran on Nitto DRs @ 15psi
When you first installed your engine.. (on stock tune) did it run very well?? Mine feels like a dog and im hoping the tune will fix it..but im not very pleased.. I beat a high 13 second car by a car length a few nights ago.. thats not what I was expecting. Also do you have the LT4 KM?? Something just isnt right here.
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Old 09-20-2004, 12:15 AM
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Re: New CC306/stock heads times

I already had the CC305 cam and it was tuned for that, so it ran ok. The tune will make it feel like a whole new car.

I do have the LT4 KM
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Old 09-20-2004, 12:21 AM
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Re: New CC306/stock heads times

Thanks for the info. I need to get a few things straightened out I think.
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Old 09-20-2004, 01:01 AM
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Re: New CC306/stock heads times

people on this board have claimed over 350rwhp with stock heads, stock tune, and cc306 with boltons (I was surprised to hear that). Get it programmed/scanned and see if anything else comes up.
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Old 09-20-2004, 01:10 AM
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Re: New CC306/stock heads times

Yeah..I have seen those claims as well....car pulls hard in the mid rpms.. and from 30+mph rolls.. get it near redline and I can tell it stops pulling. I figured lighting the tires up would be easy as well but my stock cam setup trapped 103mph and was a lot stronger imho.
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Old 09-20-2004, 12:41 PM
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Re: New CC306/stock heads times

You guys can correct me if i'm wrong, but isn't everyone that's hitting 350+rwhp on a CC306 and stock heads spinning the motor to around 6700 or 6800? Just thinking about that on my stock bottom end makes me twinge.
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Old 09-20-2004, 12:44 PM
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Re: New CC306/stock heads times

Good numbers. It's nice to see the stock headed LT1s still putting up good numbers.
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Old 09-20-2004, 01:06 PM
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Re: New CC306/stock heads times

Originally Posted by ZMaster
You guys can correct me if i'm wrong, but isn't everyone that's hitting 350+rwhp on a CC306 and stock heads spinning the motor to around 6700 or 6800? Just thinking about that on my stock bottom end makes me twinge.

I was wondering about the shift points myself
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