First track outing.... - Chevelle Tech
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post #1 of 5 (permalink) Old May 17th, 20, 11:49 AM Thread Starter
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George
 
Join Date: Feb 2010
Location: Upper Sandusky, Ohio
Posts: 2,846
First track outing....

Finally got some seat time with the new LS combo. Somewhat disappointing, but nothing broke and it was fun. Weather was sunny, mid 70's and 69% humidity. Figured on working with timing and get the stumble out of the launch.

Started with 26* of timing and shifting at 6500, also tried 6000 but was too low. [email protected] 1.84 60' Added 2* each pass and ended up 34* [email protected] 1.79 60'

Started working on the carb squirters. Started with 31-35 pink pump cams and ended up with 40/37 same pump cams...ran a [email protected] 1.77 60'

Old 388 combo in similar weather would have been 11.90-12.00 range at about same mph.

Good start, now to work on the tune/ catalog and see what is happening. May just be the difference in how the converter is acting. Traps about 5800 so some more gear might be useful. 60" was 1.68-1.72 with 388 depending on weather.
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'71 Malibu
3580 #, 6.0 LQ4, Summit pistons, Summit 8702 cam, vic jr, AED 750hp, msd 6014, 11.5:1 compression, NOS Cheater plate
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
388 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
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post #2 of 5 (permalink) Old May 20th, 20, 10:29 PM
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Jason
 
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Cool so it’s close to the 388ci with 364ci. Is that stock heads?
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post #3 of 5 (permalink) Old May 21st, 20, 9:53 AM Thread Starter
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George
 
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Re: First track outing....

Quote:
Originally Posted by Jasons 69 Chevelle View Post
Cool so it’s close to the 388ci with 364ci. Is that stock heads?
Yes, stock 862/706 heads other than upgraded trunions and valve springs. Motor came with 317s but were cracked. Friend gave me these...

'71 Malibu
3580 #, 6.0 LQ4, Summit pistons, Summit 8702 cam, vic jr, AED 750hp, msd 6014, 11.5:1 compression, NOS Cheater plate
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
388 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
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post #4 of 5 (permalink) Old May 23rd, 20, 8:56 PM Thread Starter
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George
 
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Re: First track outing....

Think I figured out where the missing power was hiding I thought it should have....going thru the MSD 6014s software, there is a page for coolant temp...it was set to add 5* when cold then pull 8* when it warmed up..so as it was going down the track, the timing was getting pulled...set that back to zero and now it feels much more like it should even with timing at 29*.....see how it does tomorrow...
shelteredv likes this.

'71 Malibu
3580 #, 6.0 LQ4, Summit pistons, Summit 8702 cam, vic jr, AED 750hp, msd 6014, 11.5:1 compression, NOS Cheater plate
T-350, PTC 9" converter, 12 bolt, spool, 3.90 gears, MT ET R 275/60/15

355 [email protected]
125 [email protected]
388 Mud Motor- [email protected]
100 shot [email protected]
'72 Greenbrier Wagon: 454, 700R4, 12 bolt with 3.73
Geo71 is offline  
post #5 of 5 (permalink) Old Yesterday, 10:02 PM
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Re: First track outing....

I have friend with a 99 camaro with a truck 5.3 in it with a Brain Tooley cam. He has only ran a best of 12.99.

Finally, I got him to advance the timing to 34* from 30*. He was running in the 13.20's before doing this.

He only has street tires and they are worn out.

I feel he would be right at mid 12's if he would get some tires and free up the suspension.

I have not really been impressed with mild LS stuff. Im very impressed with a stock LS and a turbo on it, but a cam upgrade and tune....dont see much there.

67 chevelle malibu / SS/ custom

Currently undergoing a metal work to remove all rust, if I ever get there.

Cant decide on prostreet or cruiser with a 4 speed.
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