Re: 289 XE Rods With regard to the early 2 bolt block that is quite likely, if I remember correctly ( It was 33 years ago ) the webs of the 289 HP block had a little more material in them as well as the full faced main caps. The Boss block had webs that had provision by way of extra material for the outer bolts of ( 2-3-4 ) main caps as well as a dowel between the inner/outer bolts. The dowel was the secret to this setup, when the loads push down on the main cap it tends to tighten at the parting line and the cap register in the block doesnt prevent this- the dowel did.
cheers
Jac Mac |