Best 273 and 318 builds (NO 360's please)

Infecteddog said

Yes, and it could result in positive deck height too which would not work well. You'd have to start way with pistons way down in the hole or some folks shave them. The size of the bores won't matter much- you won't have perfect clearance stroking a 318 or 340 either. The 360 crank would likely be fine, but the 4" would need clearanced. As said- it'd take a lot to bring the compression down to something reasonable.

Click to expand...

I'm still learning about engines, but what do you suppose an extra 1/4" in stroke would increase compression by? 1-2:1 maybe? If I were to do this, and I'm not committing to anything, I would probably do a budget/junkyard build for fun and use what I have. Maybe find a wagon, convertible, or Colt for it. So, 3.54" crank machined down if reasonable, stock pistons if they're good, 360 heads, 360 rods if they're better than the 273 ones, maybe a 340 spec'd cam from Summit, cheap dual plane intake as I think the M1 I've got would be overkill, 500-600 cfm carb, etc. If the compression is low enough, I'd probably just top it off with my Paxton supercharger and throw 4-5 lbs of boost on it.