my handle says it all But if I really wanted to tear up the streets, and prove to everyone what a real musclecar can do, I would only try it with a 455. The Nailhead is limited by nature with it's smaller valves. And let's face it, the valve train has a lot to be desired. That could be why Buick did away with shafted rockers in 1970. If anybody has pressed out the guides on a 'Nail-Head, you can see some but not all are not drilled concentric. If you press them out and put in concentric bronze guides, that throws the spring and valve seats and rocker tip orientation all out of whack, and you end up with recessed seats unless you install new seats, which can only fit under one valve per cylinder (b/c they are so close together). That's why I had mine reamed out and sleeved.............I never worked on a 455, but do they have the same problem? o No: Racing=455 Cruising with class and taking no $hit=Nailhead:Brow:
Hey Yardley congrats dude i saw ur car in the readers rides in PHR magazine this month:beer :beer :beer
Re: my handle says it all All Buick V8s through the demise of the 350 in 1980 had shaft-mounted rockers. In 70 they changed from oil through the shaft to oil through the pushrods.
Re: Re: my handle says it all I stand corrected..............I think what you said is what I meant to say, isn't the late design much better?
