Island Girl
Well-Known Member
So I got a little update with the person he was doing the build with.
They guy says it a 327 block bored out to a 383 stroker. Although I love working on car and engines...I really don't know how much HP and Torque that can throw out there with the heads and stuff.
Maybe some of the old timers here can chime in, but that doesn't make sense.
The 327 was a 4" bore block with a 3.250 stroke, small main and rod bearings, and 11/32" rod bolts.
There's little more than 0.030" you can reasonably bore these out, so you aren't getting more than a couple inches from overbore.
383's come from using a 0.030" over bore on a 4" bore block with the 3.750" stroke of the sbc 400.
The 350 block has a 3.48" stroke and generally needs to be machined to clear a 3.750' stroker crank.
I'm pretty sure the 327 block is too narrow at the pan rails to clearance for a 3.750 stroke crank, though it might make to a 350".
Have you googled the numbers on the block, that might be a good starting point to really figure out what you have.