[knightowl73]

Originally Posted by cableguy0

Theres no reason it should be pinging at 8 degrees advanced much less 6. Your going to need to verify that your timing marks are proper and the balancer hasnt slipped. have you checked the fuel filters? The quick thing to do to find out if its pinging is to just try higher octane fuel. Are you sure the heads on it now arent 305 heads? If the engine is unknown to you its hard to give you an accurate diagnosis without knowing more. Compression could be too high causing the pinging. Try 93 octane fuel and go from there. if the noise goes away you found your problem.

ive ran the numbers, and they are 350 heads for sure. higher octane gas only makes it run better, but noise is still there. timing marks are dead on, have brought it to tdc on compression stroke and they line up perfectly. brand new fuel pump and filter. tho im running a ford 2bbl with a adapter on top of a eddybrock intake, it works way better than the 3 quadrajets ive tried. the carb that matches my intake still needs a rebuld, but im also missing some linkage off it, so the ford carb has been doing a impressive job and i didnt think right now is the time to screw with that till i rid of the noise. no matter what carb , the noise has remained.

so im back to asking should i try the advance curve kit? how do i know which springs to use, or is it trial and error on this? and timing is set right at 8 with a vac gauge to confirm its dead on.
that and some z28 valve springs , which do i try first?