Destroking an Engine

There are instances where it works for certain racing classes. The most successful would be the old DZ302 Z28 Camaros. Those things flew for their time. Ford sort of did it with their Boss 302s. The Mopar 383 winds up super fast. (at least that's been my experience compared to my 440s).

Didn't the AARs and TAs run destroked 340s?

Chevy 302s were not "destroked" they were simply a 283 punched to 301 ----as we called them---done by many a "back yard" hotrodder before Chevy did it out of the box.

The reason the Mopar TAs were destroked was for the reason I already mentioned----that race class, at the time, had a CID limit (was it 305?), and Ma had nothing to compete, otherwise, unless they re-worked the 273.

-----Which brings up the question----why'n 'ell did whoever write the T/A rules pick the CID limit, anyhow?

Also, this nonsense about an "engine revving faster" is just that. The thing that makes an engine rev is the HP it produces and the gearing it's against. If you put a (short stroke) 265-283-302 into something that was geared high, and heavy, the damn thing won't rev, put a trailer behind it!!!!

The big big thing (other than optimum crank angle 'n fancy stuff) is that long stroke engines generate high piston speed, so that is a limiting factor.

It might be "cool" to have something rev to 8500 but if the long stroke guy producing more HP blows by you at 5500 you haven't gained a thing.