I read somewhere in these threads that these engines have a low compression ratio because they were built to run on low octane gas( i think he said like 78 octane)because that's what they ran in the 70's.He went on to say this is the reason they run hot because they can't burn all the fuel,meaning that the engine is essentially on choke constantly.
the unburned fuel then goes out the exhaust,This might explain why mine backfires so much.It blew the muffler appart first,now the Y-pipe is coming apart!!If this is all true what can I do about it?Is there a way to lower the octane of the gas you buy?