what kind of gas mileage will i get?
Thread Starter
Junior Member
Joined: Dec 2010
Posts: 21
Likes: 0
From: Austin ,Texas
Car: 1983 Trans am ws6
Engine: 305 HO
Transmission: wct5
what kind of gas mileage will i get?
hi i have an 83 trans am which im putting the l69 motor in. i bought the comp cams 260h cam and an edelbrock performer rpm intake. what kind of gas mileage can i expect to get .700r4 tranny. Thanks, Eric
Last edited by husker2733; Feb 23, 2011 at 10:36 PM. Reason: mistake
Supreme Member
iTrader: (25)
Joined: Feb 2006
Posts: 7,260
Likes: 5
From: Manteca,California. Nor Cal.
Car: SOLD IT. Mopar guy only now.
Engine: gone
Transmission: gone
Axle/Gears: gone
Re: what kind of gas mileage will i get?
16-20 mpg at best IMO.
rear end gears plays a big factor in it too.
rear end gears plays a big factor in it too.
TGO Supporter
Joined: Oct 2002
Posts: 9,067
Likes: 1
From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Re: what kind of gas mileage will i get?
About the same as a stock L69. What carb are you planning to use though? A regular RPM manifold won't work with a Qjet like the L69 came with.
Supreme Member
Joined: Sep 2002
Posts: 9,192
Likes: 19
From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: what kind of gas mileage will i get?
I consistantly get 17mpg - car specs in my sig if that helps.
Doesn't really matter - at $3.20+ a gallon (just went up today again), no amount of mileage is good enough anymore
Doesn't really matter - at $3.20+ a gallon (just went up today again), no amount of mileage is good enough anymore
And they say it won't go back down this time. 
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