This is not third-gen related but, anyone know how it's possible to get a 496 big block? What bore and stroke combination would that be? I tried running different overbores and rod lengths and couldn't come up with anything that matched. Are they aftermarket rods with a different length? Different crank maybe? I'm considering buying this car and just wanted to know what I'd be getting.

 

454 .060 over (4.31) with 4.250 Stroke.

 

Thanks. Anyone have any idea how the motor would rev with the longer stroke?

 

With some expensive lightweight parts it could rev as high as a small block but most big blocks don't like going above 6500. That's a lot of weight moving around inside the engine.

With the proper choice of parts, any big engine can produce lots of power below 6500 rpm anyway. I only shift mine at 6400.

 

the new HD trucks and full size vans have 8.1 liter (496 cubes) those make a crapload of torque 340 hp and 455 lb ft. we have one in the tow van and it yanks the spitfire around like nothing.