Built one of these for a 54? F100 Restore, originally a farm truck from NC. STill had the original bumpers on it All stock so it was easy and lo budget. Usual machining to the block, bumped the compression a tad, blue racer/wolverine "RV" cam 3 angle valve job w/some cleanup. Surprised at how well it ran withthe stock gear and 3 on the tree. Exh made a fantastic noise Cruising about 3k it was the best road music! Fun to do an oddball engine for a change
The flywheel flange is significantly larger than the rear main seal unlike a 302 One piece rear main seals are not a thing people do on Y Blocks. A careful install and leak check will get you xlnt results from an original rear main seal.
Would you consider using 12 point nuts on the rear main studs? They could give you a little bit more room for socket clearance. ps. The Hall Toledo V.I.P. grinder is deluxe!
Mine has been hot tanked but there is still alot of rust in the cooling passages between cylinders, im getting some of it off with a pick tool. But what do you guys do to really clean that out. Thx