Does Ford make a 4 bolt main?
Does Ford make a 4 bolt main? Four-bolt main conversion kits are also available for these engines. 06-ford-460-four-bolt-main-caps-summit-racing Before the four-bolt main conversion can even begin all main saddle bolt holes are chased to ensure clean thread engagement. Is a 351 Windsor a 4 bolt main? Unless you are looking at making some very serious hp and turning extremely high rpms there is no need for 4-bolt mains or an aftermarket block. Factory 351w blocks can handle 700-800hp. If you are worried about cap walk you can use a main stud girdle for extra insurance. Are there 2 bolts or...