Originally Posted by csk
Originally Posted by fast68plymouth
Well, I see what’s 99% likely the cause of the failure.


Yep, & replace ALL the intake valves, new springs & double check PV clearance


My guess is, it’s the #1 reason for broken intake valves.


On the plus side........ I’m liking the complete lack of carbon build up in that intake bowl.

68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads