273, or 318?

toolmanmike said

I advanced the E4 a couple degrees on my 273 and it has plenty of low rpm torque. It runs out at about 4800 but I can start out in 1st and skip second, start out in second and skip 3rd or what ever and it still puts pretty hard for a small cube engine. It will pull almost 20 mpg on the highway.

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I guess, these guys have never had a high performance 273 that gives you the best of both worlds with just a set of 3.23 gears. Not sure why your Charger 273 only revs to 4,800 rpm. Mine does not hit it's stride till 3,000 and pulls to 6,000+ and mine is stock, including original AFB carb intake and exhaust manifolds, other than the Isky E-4 and a set of 340 valve springs. Good luck to the OP with all that cobbling.