LT1 Fuel Mileage

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May 6, 2007 | 11:40 AM

85streetmachine

Thread Starter

Junior Member

Joined: Apr 2006

Posts: 90

Likes: 0

From: windsor, ontario

Car: 1985 iroc z

Engine: 6.0L coming

Transmission: 4L80E coming

Axle/Gears: 10 bolt 3.73

LT1 Fuel Mileage

recently purchased a LT1 with a t56. i'm going to have about 375 to 400 hp and was wondering what kind of mileage others are getting or what i should expect... i don't really get on it unless i'm at the track BTW...

May 6, 2007 | 05:58 PM

Klortho

Supreme Member

Joined: May 2004

Posts: 2,924

Likes: 1

From: Kingston, Tn

Car: 1987 GTA

Engine: LT1

Transmission: T56

Axle/Gears: 9 bolt 3.70 posi

Re: LT1 Fuel Mileage

With 3.70 gears, I get around 24-26mpg on the highway, around 320-340 miles on a tank of gas.

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