Windsor block differences.

IIRC the 69 would be a 9.480 deck height while the 79 would be a 9.503. I also belive that will make about 3/4 of a point differance in compression with the same parts.

MadDAWG

"MadDAWG" wrote

Cool, thanks.

Anybody else know any differences??

The older blocks use a larger head bolt than the later blocks. Seems like the '69 used a 1/2" bolt, while the 302's used a smaller

7/16" bolt . Some time later (72? 73?), the 351W's were built with the smaller 7/16" head bolts - same as the 302's - to save money. This is important with head application. Some heads (edelbrock) are drilled for the 1/2" bolts. To use the 7/16" bolt, you need to use a special head bolt washer with a step in it.