Printable View
I am having trouble timing my chevy, its a 350, My car is running at 21 degrees initial advance and 31 overall but runs low-mid 13s, retarding it made me run 15-16s. advancing it seems to hurt me a little but not completely sure. Why is my car holding so much initial advance and is this hurting my quarter mile time or my engine. Cant hear any detonation but will I considering i dont have much overall timing. 31 is at 3 grand and 21 at idle, what could be wrong?
Well 71- we're gonna need a little more info. to help you , like are you running a stock 350, or have you put in a cam? Have you changed your dist.?
Well its a 350, 40 over, maybe 2000 miles on it, lunati 500 515 lift cam, 256 270 duration at 50, 1 94 15 camel hump heads, been worked a little, weiand team g single plane intake, edlebrock 750 carb, roller timing chain. the cam is solid, the distributor has accel cap, rotor, summit 50,000 volt coil, curve kit is in but only put in new weights and bushings and silver springs which are closest to stock. ran it today and times were miserable at 14.5s. great off line but dog at mid to top, cam is for top end and so is intake, i have tried retarding it and advancing it tonight and still cant figure it out. Could my vacuum advance be messed up, should i try to change back to stock weights and stuff? if vaccum advance is messed up how do i change that besides the obvious of buying msd and would that even solve anything? any help is appreciated. thanks
I have a lot of black stuff under rotor, not cap and its kinda oily too, is there any seals in there?
well i bought new comp pro magnum roller rockers, studs, pushrods, cleaned cap real good, changed wires, put black springs in distributor, it somehow seemed to drop my initial timing down to 16. i took it to the track, ran it, it was 13.90s all day, last pass put the initial up to 21 again, ran a 12.80. I cant complain about the time since its never ran that fast, im gonna leave it there i think but it just seems unusual, i guess every motors different, just hope its not too much.