4 bolt block ?

The rules for my class require an OEM block. I would like to get a 4 bolt block. Are the original cobra jet 4 bolt blocks any better than a 2 bolt block converted to 4 bolt? What would be more cost effective, buying a factory 4 bolt block, or converting a 2 bolt block?

Hey, Mitch: When you can find a good factory 4 bolt CJ block, it usually has a premium price tag attached. On the other hand, a D0VE-A block is somewhat easier to find and usually cheaper. On the strength factor, it has been said by many that a splayed 4 bolt conversion done to a factory 2 bolt block is stronger. For my money, I would go for a good D0VE-A block, and have it converted to a 4 bolt. That's my story, and I'm sticking to it (LOL)!

Wayne (SAWDOFF) Pearce

Doesn't the A-460 block have a Ford part number on it, making it an OEM block?

Keep in mind that the CJ 4 bolt blocks have the outer bolts in a vertical rather than splayed configuration. While better than a 2 bolt block, they will still exhibit cap walk in high horsepower applications. I'd opt for the DOVE block conversion with 4 bolt splayed caps given your OEM block restriction.

Greg_P wrote:Doesn't the A-460 block have a Ford part number on it, making it an OEM block?

Good point.......I always ask "do they mean OEM or do they mean production OEM ?"

Depends on what you can buy a SCJ block for and what it'll cost you convert the 2 bolt unit and the budget available.