by g3mustang » Fri Jul 14, 2017 1:24 pm
holly hp 427 11.1c 220 afr heads e85. was having a horrible time with breaking up issues and blowing up pistons. We lowered and raised timing, added fuel and decrease fuel nothing helped. thought it was jumping spark from the Fast distributor. So ive gone coil on plug. wanted to break in the motor by cruising it around. did a couple quick wot pulls and some half throttle stuff. well I blew a head gasket! I feel like it was maybe due to to much timing under light load. zero vac and zero boost is 31 degrees. so half throttle and no boost is little bit more timing. Please help.