Well, I did the math- - - - -the NASCAR connecting rod allows a stroke of 4 3/8" instead of the 4 1/8" that's possible with the 292 rod, but the 235 piston is too short to work well. I'd need to find a piston that's 1/4" taller between the wrist pin and the top. I think I've figured out a work-around for that, at least for a short-life prototype engine to do some dyno testing with. If the numbers look good, custom pistons could be made, but that increases the cost of building the engine considerably. One dimension that would need to be monitored closely would be the clearance between some of the rods and the camshaft, but I don't think that would present a huge problem, even if a little extra clearance had to be ground into the cam between the lobes. There's already a flat spot there on the cam core.
A 235 bored 60 over with a 4 3/8" stroke comes out to 270 cubic inches! That one ought to have enough torque to pull stumps- - - -of Sequoia trees!
Jerry
