okay i just put my headers on and the engine around 1500 is shaking, it sounds like its missing but will a mis fire cause the engine to shake? let me know any info appreciated = )

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1990 G92 5spd LB9 - 3.42

Accel Ignition/Wires (8.8mm), Advanced Timing, TB Bypass, Ported and Gasket Matched Plenum, Synthetic Motor Oil, 160 Thermo, TPIS Airfoil, K&N Air Filters, Centerforce I Pressure Plate and Clutch, Edelbrock TES Headers, Dual Cats, Edelbrock RPM Series Catback

14.4 @ 94mph w/2.0622 60ft

Soon To Come

AFPR, Underdrive Pulleys, Short Throw Shifter, Intake, Cam

6-0 Against Rustangs = )

RW91B4C is there anyway I can contact you? We have the same cars with almost the same times, it could be good to give some good tips to eachother

 

Absolutely. Check all plug wires to insure they are on and on the right cylinder. If so, you may have done something to one of your spark plugs.

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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/'87 LB9 block, ZZ3 cam and intake, World 305 heads, Hooker headers & y-pipe, 3" Catco cat & 3" cat-back).
57 Bel Air, my 1st car. 0.030 over 396, 9.7 CR forged TRWs, Weiand Action+, Edelbrock 1901 Q-Jet, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlock header mufflers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, LT MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1/95.5 @ 5800' Bandimere.

 

put a crayon on each header pipe, if it melts instantly its fine, if not its bad.

 

Hey I fixed it, it was missing a cylinder, not as loud as my old RS was but definately barks when I get on her. I'm keeping her sleeper w/o any tips

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1990 G92 5spd LB9 - 3.42

Accel Ignition/Wires (8.8mm), Advanced Timing, TB Bypass, Ported and Gasket Matched Plenum, Synthetic Motor Oil, 160 Thermo, TPIS Airfoil, K&N Air Filters, Centerforce I Pressure Plate and Clutch, Edelbrock TES Headers, Dual Cats, Edelbrock RPM Series Catback

14.4 @ 94mph w/2.0622 60ft

Soon To Come

AFPR, Underdrive Pulleys, Short Throw Shifter, Intake, Cam

6-0 Against Rustangs = )

RW91B4C is there anyway I can contact you? We have the same cars with almost the same times, it could be good to give some good tips to eachother

 

Uhh, dont put a crayon on your headers, itll smell terrible..

Just get a wet rag.

 

just lick it the fastest way