340 stroker

stixx said
Depending on the cylinder head used and the camshaft a 416/418 will have loads of torque but will be all done by 5000rpm.
Will probably break the tires loose at will, but run out of steam soon after. Totally different character than a "short-stroke" 340 or the mentioned 372 with its 3.58" stroke.
Depending on what you're after this might fit the bill... or not.

Not true whatsoever. Never had a 4 inch stroke anything that was done at 5k. Not sure who told you that. Get the proper sized cam for that size motor, and even with ported eddie heads it will pull strongly to 6500 rpm without working up a sweat. You can run out of steam up top with too much gear and a small head, but anything ported eddie or better with correct camshaft will pull strongly to 6500.
I had a 4 inch with W5 heads that i crossed the stripe at 7400-7500 every single pass on it. Indy heads would be similar
The mistake most make is way too small on the camshaft side. The extra stroke eats up lots of duration