if you applied a 240 engine with the correct rear end ratio, 369 you would get as good or better mileage on the highway with it in an s body. as i said, the s class is not that much heavier (126) has the same frontal area and is more aerodynamic.

now to get significantly better than a 240 is not likely.

but a good 240 will do 30 on the highway at maybe 65 or even 70 and one in and s will do the same, i think, with a stick. maybe a half mpg better.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.