351 W Block

**coralcoupe1993** · 11-23-2008, 09:40 AM

How strong or weak is a 1986 block? Am I going to spit this thing like a piece of fire wood with a big stroker kit and spray?

**Rio94gt** · 11-23-2008, 11:10 AM

Im in your boat right now. Building a Windsor based stroker. From what ive been told is that 650 RWHP isnt a problem. Ive read that the 69-74 blocks are marginally stronger (how much noone knows) but this has never been confirmed.

**HidalgoGT** · 11-23-2008, 12:20 PM

I was told by woody my 94 roller block was good to 750 fwhp. With good parts of course.

**coralcoupe1993** · 11-23-2008, 04:38 PM

what years were the 351s rollers?

**HidalgoGT** · 11-23-2008, 07:57 PM

94 up i believe it was.

**349Stroker** · 11-23-2008, 08:19 PM

86 won't take the hp.They are thin junk just like the newer blocks

69-74 is what you want if you want to make serious hp or the 94 roller blocks

**biminiLX** · 11-23-2008, 11:16 PM

Worry more about the rpm than the power IMO. 700hp/7000rpm is thrown around, but take that for what its worth.

Originally Posted by 349Stroker

86 won't take the hp.They are thin junk just like the newer blocks

69-74 is what you want if you want to make serious hp or the 94 roller blocks

Agree the early block are best but nothing I know of the '94+ blocks make them stronger, they're just roller ready. Must be an F4 casting, not just a '94+ truck.
-J