SHELBY GT-40 ULTIMATE Member
Joined: Feb 2007
Dave is right, you can use a stock 4.000 bore but add in the 3.250 stroke for a 327 or a 3.400 stroke for a 342. That's about the limit for a stock 5.0 block.
How many miles does it have? If it's really high, you might need to get it bored. If they're out of round, it won't have a good ring seal.
But you'd need new pistons for sure because stock pistons won't work with a stroker kit, they'll be coming out of the tops of the bores and crashing into the heads so you can't get out of that. You'll need pistons that have the wrist pin relocated to compensate for the longer stroke and stock pistons won't work.
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