Destroked Small Block?

[Qi have a 2.96 stroke moldexUOTE="rumblefish360, post: 1971917454, member: 1189"]Yes. The reason to destroke an engine is to fit into a cubic inch limit class. This is mostly found in NASCAR with there 355 cid limit. There are some drag racing classes that limit engine size by cubes. The rules that I have read in the past were small blocks to *** size, big blocks to *** size, etc... but that was stroking up. The old Trans Am racing series had a 5.0 liter limit.

How you get the cubic inches long s a matter of bore and stroke and there is nothing in the rules about you having my to (must) run a certain configuration.

MoPar used to sell destroke cranks for this purpose. 1 such kit was to destroke a .030-360 engine down to a 352. Currently Mancini racing has these forged cranks on sale. You’ll need a custom piston. Mopar had forged slugs for this.

The ability to rev high is mostly a valve train stability & valve spring issue. Not so much the cranks stroke. The idea of a shorter throw on a crank needs less time to cover the distance so yes, it revs quicker. If everything else is equal. A shorter throw on a crank coupled with heavier rods and pistons will not move as fast (or easy) then a longer stroke crank and super light rods and slugs.

I have a destroker crank, rod, ring and slug set from MoPar. If I get a suite able block to run it, I will.[/QUOTE]

harrisonm said

I had a friend who had a 69 Z-28. It was a great car, it was pretty fast, it sounded good, and it revved up nice and high. At 302 cubic inches, I believe it was just a destroked 327. I realize that people build stroker engines for more cubes, torque and HP. I was just wondering if there was anybody out there destroking Mopar engines. Other than higher revving (if that is, in fact the case), would there be a reason to?

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i have a 2.96 stroke moldex crank for sale,destroked 318 diamond pistons,a 70 318 block if anyone is interested,was going to destroke a 318 to a 288