Hey everybody,
I just put down a deposit on an 89 TA with a Jasper 350 0.040 over in it. On top is a 750 CFM Carb (Edelbrock I think), and everything else is Edelbrock too.
Now theres this annoying problem, when you floor the gas sometimes it takes off, other times it stumbles before pinning you back in your seat. The rest of the way it runs like a champ, only when you take off from a stop. The distributor cap is loose (previous owner attached it with tape
), could this be causing this, or does this sound like a fuel delivery problem? BTW I know jack about Carbs (was TPI'er before) so please try to explain why you think what you think.
Thanks for the help, and I hope people on here are just as helpful as the TPI people.
-Max
I just put down a deposit on an 89 TA with a Jasper 350 0.040 over in it. On top is a 750 CFM Carb (Edelbrock I think), and everything else is Edelbrock too.
Now theres this annoying problem, when you floor the gas sometimes it takes off, other times it stumbles before pinning you back in your seat. The rest of the way it runs like a champ, only when you take off from a stop. The distributor cap is loose (previous owner attached it with tape
), could this be causing this, or does this sound like a fuel delivery problem? BTW I know jack about Carbs (was TPI'er before) so please try to explain why you think what you think.Thanks for the help, and I hope people on here are just as helpful as the TPI people.
-Max
five7kid
Moderator
close
May 4, 2026
Hey, we're even MORE helpful... 
Welcome aboard.
The old saying is, "90% of carb problems can be fixed with a set of points and plugs." While we don't have point ignitions anymore, the principle still applies that the ignition system should be optimized before any work is done to the carb.
Get that fixed, then come back in and we'll keep you on the straight and narrow!
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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. 2-1/2" cat-back, ZZ3 intake, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 CC system w/'87 LB9 block, ZZ3 cam, ported World 305 heads, Hooker 2055 headers, 3" Catco cat & 3" catback, restalled TC, Spohn SFCs).
57 Bel Air, my 1st car. '66 396, 9.7 CR forged TRWs, Weiand Action+, Holley 750VS w/4150 conversion, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 600 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).
Welcome aboard.
The old saying is, "90% of carb problems can be fixed with a set of points and plugs." While we don't have point ignitions anymore, the principle still applies that the ignition system should be optimized before any work is done to the carb.
Get that fixed, then come back in and we'll keep you on the straight and narrow!
------------------
82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. 2-1/2" cat-back, ZZ3 intake, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 CC system w/'87 LB9 block, ZZ3 cam, ported World 305 heads, Hooker 2055 headers, 3" Catco cat & 3" catback, restalled TC, Spohn SFCs).
57 Bel Air, my 1st car. '66 396, 9.7 CR forged TRWs, Weiand Action+, Holley 750VS w/4150 conversion, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlocks, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Idles smooth @ 600 RPM in D. Best 15.02/95.06 @ 5800' Bandimere (corrected 13.93/102.4 @ sea level).
Supreme Member
I know its kind of an old topic, but how did it go? I have the same problem with my engine when it's cold, but as soon as I hit 140-160 degrees it runs great.
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1984 Firebird - Daily driver, 305 LG4, 3.23 rear, T5 - Hurst short shifter, Edelbrock 600 CFM 1406 carb, Performer intake - Edelbrock Pro-Flow air filter, gutted cat, IROC 16x8 5 Spoke Wheels, AIWA bargain basement (from Sears of course) CD player, Eight-ball shift ****
Check out my ride here
"IT'S SNOWING! TO THE HIGH SCHOOL PARKING LOT!" - The Mustang and Firebird face off in the dead of winter.
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1984 Firebird - Daily driver, 305 LG4, 3.23 rear, T5 - Hurst short shifter, Edelbrock 600 CFM 1406 carb, Performer intake - Edelbrock Pro-Flow air filter, gutted cat, IROC 16x8 5 Spoke Wheels, AIWA bargain basement (from Sears of course) CD player, Eight-ball shift ****
Check out my ride here
"IT'S SNOWING! TO THE HIGH SCHOOL PARKING LOT!" - The Mustang and Firebird face off in the dead of winter.