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godtool
09-23-2008, 06:31 AM
Last few times I really step on it such accelerating from 60-100 kmh, the engine suddenly dies, so start pumping the gas and then suddenly the engine comes to life. Sounds like a fuel pump maybe?? I have a rebuilt 750 quadrejet on my 305. I rebuilt the 750 because I weas expecting to use it on my 454.

nbrowser
09-23-2008, 07:04 AM
Could be overfuelling the engine too....750 CFM is quite a bit for a 305 inch motor....how rich do ya have it set for ?

whitlers
09-23-2008, 11:09 AM
thats what i was gonna say. over carb much??

Rye Guy
09-23-2008, 04:37 PM
Can you deactivate the 4 barrels this might help the problem:confused0006:

Kingblazer84
09-23-2008, 05:09 PM
way too much fuel for that small of a motor dude i would recommend a 600cfm or a 650cfm quadrajet or edelbrock, whats ur timing set at?

godtool
09-25-2008, 07:45 AM
I'll check the timing....

pumpkin
09-25-2008, 12:59 PM
Q jets come in ONLY two sizes 750 and 800. It is not going to be an over fueling problem. I love all the no brain opinions people have.

epic3
09-25-2008, 01:54 PM
loss of vacuum would be my guess or possibly accelerator pump isnt adjusted right