>yes on the headbolts
> yes on roller roller lifters
> yes on the pushrods, but they have to be length checked.
>no on flat-tappet lifters unless
..A) every lifter goes back on the same lobe it came off,or
..B) they have been re-surfaced, or
..C) they are a specialty with a limited-wear foot,
But as to headbolts, after a few torquings, I wouldn't trust them on a hi-po engine. But what's the worst that can happen? Yeah the head gasket lets go,lol. messy but not likely fatal.
