Join Date: Mar 2002
Location: Austin, TX, USA
All good suggestions. Basically supv26 the helicoil is a spring-like insert. The other options are a threaded insert with keepers to prevent the insert from pulling out. Personally I'd go with a helicoil first and then upgrade if needed since the other methods require a larger hole. The old measure twice and cut once approach so to speak.
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI