i have a new built 350 in my camaro, edelbrock performer 60cc aluminim heads that where slightly milled, cam, bored .o6 over, adjustable feul pressure reg. set at 50 psi, 24lbs SVO injectors, stock motor acdelco spark plugs gaped at .035, accel 8.8 wires, headman headers, flowmaster exhaust, electric exhaust cut out, ported intake, timing set at 6* BTDC, new 350 ESC modual, 350 computer chip in the 305 computer, aluminum pistions, and thats all i can think of right now

the problem im having is when im going around 40 or between 1500 and 2000 rpm, not while flooring it just while crusing with steady gas, the rpms start to fluctuate and i can feel the car jump with the rmps. also at idle the car hesitates a little when i gas it up real quick. does anyone no what could be causing this? could it have something to do with feul? i still have the stock feul pump, i replaced it 2 years ago but its still the stock one.

 

Vacuum leak possibly

 

i had a feeling i might have one...one of my concerns was the EGR valve solenoid, when i was puting the car back together i acedently pulled the 2 vacume hoses out of it and wasnt sure if they where suposed to do that and thought i might have switched the 2 hoses around and iv been trying to find a new one but i dont no where to get one?

 

Any codes?

Just curious. You're running a stock 350 chip with the LT1 cam 24 lb SVOs and 50 PSI at the rail? When are you planning on having someone burn you a chip?

 

nop there arent any codes

 

could it have anything to do with feul? i changed the feul pump about 2 years ago but its still the stock one and when i rev it up real quick when its at idel in N it hesitates before it revs up and the idle feels a little ruff but not horible

 

I agree with RD on the chip. Hard to know if anything is wrong when the computer isn't even working properly with the engine as is.

 

o sry about that i didnt even see the second part to hist post...i do have a chip burnt for the modified motor i had someone do it for me off of this site