i want to put a393 stroker into my notch and was wondering what early 351 block is the strongest? i assume most early blocks have 4 bolt mains and eventually i will be pushing about 600 hp with a kenne bell blower so having those would be a plus, also are there any problems with cooling efficiency or oiling on these old blocks?


thanks alot- Chris

 

For that much hp I wold get a Dart or World block, don't know of any stock Winsor blocks that will last long with that much power

 

wait..... did they ever even make a 4 bolt 351w block?

i would think a stock block could handle the HP though, using some main studs and a girdle would prolly be a good idea though

 

If you want a 4 bolt main block I think you're gonna have to make one or go aftermarket. IIRC, they didn't make a Windsor with 4 bolt mains.

 

The strongest 351W block that I know of was the '69. I think it had a higher nickel content and larger webbing. I just sold my '69 351W and that was my understanding of the block.

 

some clevelands were 4bolt mains

all the boss engines were 4 bolt mains

 

get a world man o war block i have one they can take 460ci and its already got the block cut outs to clear the rod bolts on a big stroker

 

Look at a marine block

 

most marine blocks are gonna be super rotted in the water jackets though.... scary stuff.

if ALL boss motors were 4 bolt.... didnt they make a boss 351 for like 1 or 2 years? am i just on crack?

 

boss 351 was only 71 i think strongest blocks i know of are world man o war and dart