T-56 viper box behind 545 cobra

[ByronRACE]

The TKO600 is a fine transmission, and 5 speeds is honestly enough in a cobra unless you can picture yourself needing a double-overdrive. However, it does not feel the same as a T56. It's a bit more notchy, not quite as smooth, and so on...just different.

Considering my crankshaft weighs more than some engine blocks, I felt that the mass reduction of an aluminum flywheel over a steel flywheel would be a bit like putting a carbon fiber handle on a sledge hammer. If you're building a 385 series (460), I would save your money and run a steel flywheel; I really doubt the difference will be noticed. If you've taken steps to make for a light rotating assembly, then go all the way. By the way, even though I'm a short stroke low compression 429 running an industrial unlightened 429 crank, big heavy i-beam monster truck (crower) rods, and pistons that look more like diesel parts than gas parts (intentionally had them built with a beefy top ring land), this is *by far* the fastest neutral-revving V8 I've ever built, so I've learned that just because it weighs a lot doesn't mean it isn't going to rev.