What happened ...... car slowed .5

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soslojoe1970
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Joined: Wed Apr 08, 2009 5:43 am

What happened ...... car slowed .5

#1 Post by soslojoe1970 » Sat Jun 05, 2010 2:57 pm

The car lost .5 in the 1/8 mile. The car was real lazy... 60foot off, 330 off, 1/8 mile off, and mph off. Check all quick things and all seemed ok. I turned on my oxygen sensor computer the last pass (1 in each header collector)........... 4.5 all the way down the track on Q-16. it feels ok doing burnout and tried a dry hop before staging all was good. Then when it launched it was dead... all the way just stated clearing up then shifted and back to lugging. The computer reads realtime O2's in the pits were fine 16-17 idling around and on 2 step in pits??? wtf?? So something is changing on the lauch ... or high speed bleeds start working???

WTF again??

car ran ok 5 days ago no prob

427belair
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Re: What happened ...... car slowed .5

#2 Post by 427belair » Sat Jun 05, 2010 10:15 pm

Have you checked the transmission fluid? How bout checking for a bad spark plug wire. What all have you ruled out?

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wikd69
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Re: What happened ...... car slowed .5

#3 Post by wikd69 » Sat Jun 05, 2010 10:25 pm

Something simple like slipped throttle linkage ? I've seen that screw things up on several occasions...
1969 ProStreet Camaro RS Best 9.75@139 1.46 60'
Blown 427 BBC, TH400 w/Brake, Back-Half Ladderbar
Narrowed 12-Bolt, 4.10 Gears, Spool, Moser 33 Spline

http://www.marsh-racing.com/harrys_camaro-1.htm

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chpcamaro
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Re: What happened ...... car slowed .5

#4 Post by chpcamaro » Sun Jun 06, 2010 1:15 am

check air bleeds and or dirt in carb you might of got something in it and it cleared out :scratch:
best to date N/A 8.91@153
psca westcoast heads up racing open comp
67 Camaro RS/SS
BBC Powerglide 4800 stall 4.11 29.5x10.5W
http://www.chpdragracing.com

soslojoe1970
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Re: What happened ...... car slowed .5

#5 Post by soslojoe1970 » Mon Jun 07, 2010 9:09 am

Havent tried it yet ..... out of the 4 center air bleeds one in the front and one in the rear had like fuel residue in it and could not see through it clogged ......... all the plugs were dark and tail pipes dirty. air bleeds???

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prostude
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Re: What happened ...... car slowed .5

#6 Post by prostude » Thu Jun 10, 2010 8:05 pm

sounds like what happened to my car last time out on the 4th pass broke the crank snout out I am assuming that the crank was twisting and throwing my cam timing off
but mine was a blown application
did you bump up to a higher ocatane gas maybe
Street car Old motor 10.80 @122 1.49 60' 355 6-71 stock gm heads stock rocker arms block hugger headers 1-5/8"x2.5" collector
the car ran in the 9's in the 60's with an olds motor.

soslojoe1970
Posts: 67
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Re: What happened ...... car slowed .5

#7 Post by soslojoe1970 » Fri Jun 18, 2010 5:56 pm

Rocker stud came out of head ......... intake

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