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A late model vortec roller motor w/ a vortec tpi intake stock otherwise or....A bonestock 400 w/a comp xe256-12 and a stock tpi manifold Just looking to get this thing running.BTW I have both setups in my shop also which would require less tuning if any at all
As far as heads fitting, a small block is a small block. The 400 can be converted to take factory roller cam parts, with an OE lifter change, or you can use a retro roller set up. For less money you can retain the flat tappet cam in the 400.