Reply to "Stroker kit"

Tai- I have to amend my post. You likely can find an Australian Cleveland block. Some late-70s to-early '80s Euro-Panteras had them.There are several varieties, but what you want is the true heavy-duty Aussie block with siamesed cylinder walls.These blocks are race quality and will take monstrous overbores- some will safely go more than 4.060". This block bored 4.060" with a 4.125" stroke will yield 427.22 cubic inches. To go bigger, you'll need a billet crank of around 4-1/2" stroke, with a bore of 4.060. That combo gives 466 cubic inches. Jack Roush did such an engine for a Cobra years ago. There is NO other Cleveland-type block that can take even an 060" overbore. In the early '70s, drag racers used to furnace-braze sleeves in std blocks to get big displacement, but the furnace brazing is tricky and even when successful, the high heat used results in having to completely re-machine every surface in the engine including the lifter bores.You're left with a big-inch block that has weak main bearing supports due to the excessive sculpturing Ford did in casting the Cleveland. I'd look for a heavy-duty Aussie, sonic-test it for cylinder wall thickness, and go from there.