superV, I would check the #'s on your 454 Hardin engine first ,before pulling it.It may well be an LS-6 with 450HP on tap. Many california daycruisers came with the LS-6 in the seventies and eighties.It's an excellent block with high RPM potentials.If you have the log manifolds on it ,just cut the step off on the riser manifold to open it to 3 1/2 .I'm spinning a 14x13 cupped prop at 5300 rpm with my LS-6.
[ August 21, 2002, 09:55 AM: Message edited by: spectras only ]