Fuel milage

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Nov 4, 2017 | 12:20 PM

PontiacT/A305

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Fuel milage

I have an 87 trans am 5.0 l engine,it was hard on gas so i put on a new 500 cfm Edelbrock,no better.Whats the deal?

Nov 4, 2017 | 04:58 PM

DynoDave43

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From: MICHIGAN

Car: 1988 Trans Am

Engine: L03

Transmission: 700R4

Axle/Gears: 10 Bolt 2.73 Open

Re: Fuel milage

Welcome aboard PontiacT/A305.

What exactly IS your gas mileage? Accurately tracked and recorded over a period of time, or a guestimate? What transmission? What climate? What axle ratio? What driving style?

Some discussion on MPG for TBI 305s here.

https://www.thirdgen.org/forums/tbi/...ml#post6180508