plug reading
hi guys
need to know what you think......I have a ZZ4 350/355 i check the
plugs today.....the porcelain is off white the ground strap at the top is a
lite green color no oil on plugs. do you think i need to back off the timeing a
little.... timeing inital 12 total 34
ZZ4 350/355
intake power plus open plain
demon 750
edelbrock rpm heads 202/160 64cc
crane hydraulic roller 234/242 adv duration 296/304 lift 539/55
1.5 roller tips
msd distrbutor no vacuum advance.................thanks....Butch