last year I had the heads rebuilt on my '68 302 4bbl. The engine block is the original and it is a J code (4bbl). While the heads were off I took notice of the numbers and found out the the heads are actually off of a '70 motor. Is this ok, since the 70 302 was strictly a 2bbl engine that year? Is it hurting anything, performace, etc? I have had engine pinging problems and am running 93 octane chevron gas, have set the dwell, adjusted the timing, new plugs cap rotor wires, I am wondering if the 2 bbl heads are causing a problem?
P.S. I recently got a pair of '68 4V heads numbers matching for my engine. I just wasnt in a rush to put them on, but I will if they are gonna make a huge difference.
P.S. I recently got a pair of '68 4V heads numbers matching for my engine. I just wasnt in a rush to put them on, but I will if they are gonna make a huge difference.