Hi, I hope someone can help me with this problem because my cars been sitting in the garage for a while now and driving me crazy. I have a 350 that I put a TA intake manifold and a holley 625 cfm carb on. Ive been having alot of problems with the car since I did this. I set the initial timing to 4 degrees and replaced the wires, rotor, plugs and cap too. My car backfires when the gas is pressed through the carb, blows black smoke out the exhaust, stalls out around turns and runs very bad. I know that I did something wrong when putting that intake on and I think it was probably the sealing. One thing that I noticed is that the hose from the manifold to the carb has a very low vacuum reading somewhere below 10 which probably means a leak im guessing. The hose also seems to have oil in it which I dont think it should, is this because there is a leak or is there something very wrong with the motor? Thanks for any help.
Put in a new pcv valve...that can cause stalling if it is clogged. It also can cause excessive oil consumption. Also try advancing the timing to about 10 or 12 degreees, see where that gets you. If that doesn't help, check all vacuum lines and replace cracked or damaged hoses. I'm assuming that the holley carb is new. If it's not, pull it and clean it or rebuild it. (or get an edelbrock performer:grin: ) Just my 2 cents....good luck on getting the car running! Adam
My guess is carb. Black smoke is a sign of running too rich, like the floats are set too high. Backfiring through the carb upon accelleration is possibly a defective accellerator pump. I believe your engine may want more like 10 degrees initial advance. Just my opinion, I'm no expert.
This is interesting, cause I had one heck of a time gettign my TA Intake to seal. I am glad I am not the only one. I had to eventually use a steel gasket with more than normal sealant, and hylomar around the intake/exhaust ports. It is sealed now, and I did not have my surfaces decked like I should have, and next time I will. Also, my vaccume is low due to an excessively big cam. Just thoght I would offer my experience to you. -Jon
The TA intake, be it a really good intake, is difficult to seal. Make sure it is properly sealed. You don't want antifreeze to seep in the oiling system. Be certain to apply a sealant around each intake port also. Contact TA and they will give you their recommendation. Once you have it sealed you'll like it. Good Luck
thanks for the advice, ill try making sure that i seal the intake real good this time, I am pretty sure thats gotta be the problem.
