fuel mileage

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12-21-2010, 07:38 PM

camaroboy199290

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Join Date: Feb 2006

Location: blairsville Ga

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Car: 89 iroc

Engine: 355tpi

Transmission: jasper 700r4

Axle/Gears: 4.11 lsd

fuel mileage

what kinda fuel economy could i expect from a 355 tpi with world sportsman heads 11.5 to 1 compression mid 500 lift cam with high 200 duration and with a set of 32lb injectors if it is tuned right. also has a 700r4 and 373 rear

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12-21-2010, 08:52 PM

tom3

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Car: 88 Camaro

Engine: L98 350

Transmission: 700r4

Re: fuel mileage

With a high duration cam running in OD you might be well below the efficient rpm for the camshaft. Really hurt gas mileage. I'd guess about 17 mpg on mostly highway miles. My mostly stock 350, 700R, 3;23 rear barely gets 20. (Not real satisfied with that either)