I recently put new TF heads and a comp cam 218/224 in my 89 350 tpi and Now i have some ?'s . The car idles smooth at 700 with the stock chip but the spark plug readings arnt looking good. The motor had 68,000 on it before i did any of this and the plugs always looked good. well to start it off. plug #1 looks nice and Tan #2 looks like carbon buildup and smells gassy #3 looks tan and in good shape #7 has carbon buildup and smells gassy. Other side of the block looks fine. The car bunrs 0 coolant and it doesnt burn any oil. exhaust is perfectly clear and smells normal. I am also getting alot of water out the tailpipe. I think that is good because i guess it means the engine is burning better. I have 0 vacume leaks and I am getting 13hg of vac with the 112lsa cam. FP at idle is 42 and 48 disconnected. timing is at 6* and the wires are new, coil is new, cap rotor, and MSD box. O2 readings are 090-780 at idle and highway crusing. BLM's are 126/129 at idle. i know I still have to get a chip + the car doesnt seem to scream until its at 180* and fully warmed up. Chip still? Do you think that the intake gasket is bad or an injector grounding out? BTW all the injectors are brand new.

 

you need a e prom for sure, other than that do you get any knock counts? if not i'd try lower octane fuel ,maybe 1 step colder plugs, if vacumn reads are good sort eliminates a leak