[updated:LAST EDITED ON 10-Jan-02 AT 09:45 AM (EST)]There is no such thing as a factory 4 bolt main 460.. Only a 429CJ -SCJ... You want a 4 bolt "460" block you need to get a SVO block from Ford. The 460 crank can take just about anything you can put to it... Just don't turn it above 7500 rpm...Remember it's a cast crankshaft... If your gonna turn above 6500 on a regular basis you need to make sure it's straight, deburred, shotpeened , indexed, equalized strokes, cross drilled, oil holes chamfered and micropolished... It's alot to have done, but it's a cast crank...As for the two bolt 460 block -- have it aligned honed with ARP studs and it will take plenty of abuse...For a performance application internal balancing is always better...Makes it alot easier if you decide the change flexplates,flywheels, pressure plates or balancers if its internally balanced...


Metro2