512 stroker.

bOb shingler said
would the stealth heads be to small for 512 inches?

looks like they are basically a ported 452...

Cylinder Head Technical Specs:

Intake Port Flow (at peak ~600 lift): 290CFM @ 28" of water Intake Port CC: 212CC* Intake Valve Head Size: 2.14" Intake Valve Stem Size: 11/32", undercut near valve head. Intake Valve Guide Type: .530" OD Manganese Bronze Intake Valve Seals Type: Positive Locking type, maintains contact at all times with the valve and guide, reduced diameter compatible with most dual valve springs. Intake Valve Type: 1 piece forged 21-4N stainless, swirl polished heads, hardened tips. Intake Valve Locks 7 degree, single groove, chrome-moly steel, case hardened. Recommended for maximum .510" lift. Exhaust Port Flow (at peak ~600 lift): 220CFM @ 28" of water Exhaust Port CC: 72CC* Exhaust Valve Head Size: 1.81" Exhaust Valve Type: 1 piece forged 21-4N stainless, swirl polished heads, hardened tips. Exhaust Valve Locks 7 degree, single groove, chrome-moly steel, case hardened. Recommended for maximum .510" lift. Exhaust Valve Stem Size 11/32", undercut near valve head. Exhaust Valve Seals Type: Positive Locking type, maintains contact at all times with the valve and guide, reduced diameter compatible with most dual valve springs. Exhaust Valve Guide Type: .530" OD Manganese Bronze Valve Spring Type: Single with Damper. Recommended for maximum .600" lift. Valve Spring Closed (seat) Pressure: Approx. 130 pounds @ 1.875" installed height Valve Spring Open Pressure Approx. 330 pounds @ 1.275" (.600" lift.) Valve Spring Inner Diameter: 1.050" Valve Spring Maximum Lift: .600" Valve Spring Coil Bind Height: 1.130" Valve Spring Outer Diameter: 1.550" Valve Spring Free Height 2.400" Valve Spring Installed Height: 1.875" Valve Spring Wire Diameter: .202" Valve Spring Number of Coils: 5.5 Deck Thickness: .625" Chamber Volume: 80CC* Chamber Type: Closed (with quench surface) Weight (bare): 22 pounds Weight (assembled): 29 pounds Aluminum Type A-356 *Due to normal casting processes such as core shift, etc, all CC volumes listed are approximate and subject to normal variation.