I would do a 5.7 stroker which would work out to a392" motor
I would go with the eagle head for $
The 6.1 stuff is more expensive. the 5.7's can be found comeplete motors for a few hundred bucks.
With bobs K frame you could even keep the truck oil pan.
A 392" eagle headed motor could make 600hp easy with all stock stuff except for the stroker kit and lil head porting.
Rick the Apache is going for 408.45 assemble and flows APPARENTLY 358 cfm OOTB.if the # are correct you will save on porting cost. Man I would like to know your finding this motors. Up here in toque land the are going for 1500 to 2000. How's your G3 biuld going? Matt
What kind of chamber does the apache head have??? the more open style like the 6.1 or closed like the eagle????
Apache heads are closed chamber like the Eagles, but have the same cc's as the 6.1. The Apache also flows less than the Eagle under .400" lift. Both the Eagle and Apache heads needs work on the exhaust side more so than the intake. As they say "What goes in, must come out".
