fuel mileage
Thread Starter
Member
Joined: Feb 2006
Posts: 186
Likes: 1
From: blairsville Ga
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
Supreme Member
Joined: Jan 2004
Posts: 2,322
Likes: 100
From: So. Ohio
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)
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