Correct, and the difference is 8.2 to 9.5" along with the windsor having a 3" main journal diameter compared to the 302's 2.248. The beefiness of the blocks in the main bearing area is the reason a windsor will handle the power a 302 block won't.your 302's the same way. one of the main differences between the 302 and 351 is the deck height. im not sure on everything else. 302 and 351 heads are interchangeable.