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Alan Roehrich · 08-15-2010, 12:31 PM

Honestly, your best bet is a BowTie block, but you'll find a small bore standard deck BowTie block hard to come by, although you can find a big bore version and sleeve it down with flanged sleeves. After that, consider a two bolt 454 block, converted to steel splayed caps, filled with Hard Block, and sleeved down to 396 bore size, with flanged sleeves, and the lifter bores trued by opening them up to 0.904".

You're going to be up around 8800 RPM, and close to 800HP or more to be competitive.

08-15-2010, 12:31 PM	#3
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,066 Likes: 1,487 Liked 1,630 Times in 378 Posts	Re: 2 Or 4 Bolt? Honestly, your best bet is a BowTie block, but you'll find a small bore standard deck BowTie block hard to come by, although you can find a big bore version and sleeve it down with flanged sleeves. After that, consider a two bolt 454 block, converted to steel splayed caps, filled with Hard Block, and sleeved down to 396 bore size, with flanged sleeves, and the lifter bores trued by opening them up to 0.904". You're going to be up around 8800 RPM, and close to 800HP or more to be competitive. __________________ Alan Roehrich 212A G/S