2.8 to 305 swap problems!!
2.8 to 305 swap problems!!
I have put a 305 (carbed) in a '88 camaro that was a 2.8 and everything is O.K. except it wants to die once I hit about 45 M.P.H.
It cuts out and sometimes dies and wont start back for a min or two,I have replaced the dist. fuel pump,fuel lines,pick up in the tank,carb,and have checked the timing several times,,but it seems to not be getting gas,,,Help!!Should I try an electric pump?I am out of ideas on this one!
It cuts out and sometimes dies and wont start back for a min or two,I have replaced the dist. fuel pump,fuel lines,pick up in the tank,carb,and have checked the timing several times,,but it seems to not be getting gas,,,Help!!Should I try an electric pump?I am out of ideas on this one!
Help!!Should I try an electric pump?
What type of pump do you have now? What is it PSI rating? What was wrong with the 2.8 fuel pump? Are you pulling any codes?
Sorry, I know that's not help, but., I will try to help if you can answer those questions!
v/r
m-t
What type of pump do you have now? What is it PSI rating? What was wrong with the 2.8 fuel pump? Are you pulling any codes?
Sorry, I know that's not help, but., I will try to help if you can answer those questions!
v/r
m-t
It has a mech. pump on it new.The electic pump in the tank is no longer there,and the comp. has been done away with.it is carberated.with a reg. pick up in the tank, and I cant get codes from it.this one has me stumped!!
Joined: Mar 2000
Posts: 43,187
Likes: 46
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The "dies and won't start back for a minute or two" part doesn't sound much like a fuel problem. But, to know for sure, you have to have some evidence of fuel or lack of fuel. When it has quit on you, have you jumped right out, pulled the air cleaner off, and checked for a shot of gas from the accelerator pump? You should also rig up a pressure gage so you can check the running pressure and for any fluctuations.
My guess would be that you'll find all that in order, and will need to look elsewhere. What kind ignition do you have? I'd suspect something is weak, and you're getting an open with heat, either in the coil or in the pickup circuit.
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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. '66 396, 9.7 CR forged TRWs, Weiand Action+, Edelbrock 1901 Q-Jet, 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).
My guess would be that you'll find all that in order, and will need to look elsewhere. What kind ignition do you have? I'd suspect something is weak, and you're getting an open with heat, either in the coil or in the pickup circuit.
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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. '66 396, 9.7 CR forged TRWs, Weiand Action+, Edelbrock 1901 Q-Jet, 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).
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