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new best time 12.33 at 110

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Old 04-28-2012, 07:18 PM   #1
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Default new best time 12.33 at 110

Haven't been out to the track for a couple of years now. Decided to go back after finally getting a tune.

Was a little rusty the first pass got a 12.96 at 108. Spun the tires off the line my 60ft was 2.00.

Bumped the air pressure down to 17 psi on my M/T ET street radials on my 2nd pass. Felt better off the line. Got a 12.48 at 109. 60ft was 1.73

While waiting for a 3rd pass a car blew it's engine which shut the track down for a good 45min. It was a cool night, I believe the temp was around 50F. So that let the engine cool down real good. Car felt awsome this time around. 12.33 at 110. 60ft 1.70

383 stroked LT1. N/A
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Old 04-28-2012, 08:44 PM   #2
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Quote:
Originally Posted by Pimp Daddy View Post
Haven't been out to the track for a couple of years now. Decided to go back after finally getting a tune.

Was a little rusty the first pass got a 12.96 at 108. Spun the tires off the line my 60ft was 2.00.

Bumped the air pressure down to 17 psi on my M/T ET street radials on my 2nd pass. Felt better off the line. Got a 12.48 at 109. 60ft was 1.73

While waiting for a 3rd pass a car blew it's engine which shut the track down for a good 45min. It was a cool night, I believe the temp was around 50F. So that let the engine cool down real good. Car felt awsome this time around. 12.33 at 110. 60ft 1.70

383 stroked LT1. N/A
What is your setup? Where are you shifting? Traps are low for a 50 degree April night. I would think even a mild 383 LT1 should be pushing 115mph.
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Old 04-28-2012, 09:15 PM   #3
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My 355 traps 116 at 6900 DA...

What heads and cam?
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Old 04-28-2012, 10:16 PM   #4
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Engine:
383 LT1 stroker
11:1 compression
forged internals
MSD plug wires
NGK TR55's
28.8 injectors
52 mm throttle body
high volume oil pump
cold air intake w/K&N filter
Bullet racing cams duration at .050 intake 225 exhaust 232
lobe lift intake .3500 exhaust .3400 separation 113
factory heads that have been reworked/port matched/tunnels and bowls/runners
pacesetter LT w/2.5 custom exhaust with x-pipe
Racetronix / Walbro 255LPH fuel pump
Holley adjustable fuel reg
EGR block off plates

trans:
4L60E/ just had rebuilt with upgraded servos, pump, harness,etc
2800-3000 stall converter, had rebuilt also

rear end:
stock 10-bolt rear end w/3.23 w/girdle

suspension:
Koni yellow struts & shocks
Eibach pro-line springs
UMI adjustable pan-hard bar

Just had it tuned & dyno'd
336.28 hp 353.69 torque
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Old 04-28-2012, 10:24 PM   #5
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Quote:
Originally Posted by Pimp Daddy View Post
Engine:
383 LT1 stroker
11:1 compression
forged internals
MSD plug wires
NGK TR55's
28.8 injectors
52 mm throttle body
high volume oil pump
cold air intake w/K&N filter
Bullet racing cams duration at .050 intake 225 exhaust 232
lobe lift intake .3500 exhaust .3400 separation 113
factory heads that have been reworked/port matched/tunnels and bowls/runners
pacesetter LT w/2.5 custom exhaust with x-pipe
Racetronix / Walbro 255LPH fuel pump
Holley adjustable fuel reg
EGR block off plates

trans:
4L60E/ just had rebuilt with upgraded servos, pump, harness,etc
2800-3000 stall converter, had rebuilt also

rear end:
stock 10-bolt rear end w/3.23 w/girdle

suspension:
Koni yellow struts & shocks
Eibach pro-line springs
UMI adjustable pan-hard bar

Just had it tuned & dyno'd
336.28 hp 353.69 torque
Power and trap speeds match up. But I would have that looked at. Your numbers, with those mods and cam specs, should be closer to 400rwhp even through your auto. I'd check to make sure you are getting enough fuel.

Not trying to be a debbie downer, but I know your car has a lot more in it and want to see you get it.
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Old 04-28-2012, 11:00 PM   #6
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Cam is wrong, and I would bet whoever did the heads did more harm than good. That's dismal numbers for a 383.

Depends on if you want more though I guess. If its reliable and you're happy then good deal.
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Old 04-29-2012, 08:37 AM   #7
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Quote:
Originally Posted by FlatBlackZ28 View Post
Power and trap speeds match up. But I would have that looked at. Your numbers, with those mods and cam specs, should be closer to 400rwhp even through your auto. I'd check to make sure you are getting enough fuel.

Not trying to be a debbie downer, but I know your car has a lot more in it and want to see you get it.
I agree, I thought I would see closer to 400 as well. I've wondered if fuel is an issue, running 28.8 injectors might be the cause?

Quote:
Originally Posted by gregrob View Post
Cam is wrong, and I would bet whoever did the heads did more harm than good. That's dismal numbers for a 383.

Depends on if you want more though I guess. If its reliable and you're happy then good deal.
I got the heads done before the cam was ordered. The company who did the head work is very reputable (Dave Layer of Heads Up! Cylinder heads). I had him do flow test on the heads, in which I gave Bullet Cams all in info on my setup. I did not want to go with a wild cam, and not make it streetable. So far it had been reliable and pretty satisfied. although I wouldn't mind getting a little more out of it, but then again who doesn't lol
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Old 04-29-2012, 08:37 AM
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