gas mileage
Senior User
Joined: Aug 2000
Posts: 205
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gas mileage
my 429 (close enough) in a 3\4 ton truck with an auto, 3.55's, and 33 inch tires has gotten up to 12 mpg on easy highway cruising. however, if i drive it hard constantly in mostly stop and go driving it can drop all the way to 5 or so. i would say an average would be 9-10.
Mountain Pass
Joined: Jan 2001
Posts: 229
Likes: 0
gas mileage
With those gears, you should probably get around 11-12 on the freeway, depending on tire size and how "granny" your trans. is.
Im getting up to 14 on the freeway, with 3.00:1 rearend and 26" tires.
Good luck!
J/.c
1965 Ford Galaxie 500 (okay, so not quite a truck)
460/C6 transplant @ 389hp/491 lb.ft.
14.29@103.8, 13-14 mpg heheheheheh
Im getting up to 14 on the freeway, with 3.00:1 rearend and 26" tires.
Good luck!
J/.c
1965 Ford Galaxie 500 (okay, so not quite a truck)
460/C6 transplant @ 389hp/491 lb.ft.
14.29@103.8, 13-14 mpg heheheheheh
Senior User
Joined: Oct 2000
Posts: 227
Likes: 0
From: arkansas
gas mileage
2.75 rear, c6 tranny, 466 ci, 224/234 .572/.580 cam, stealth intake, 880 holley...gets 10mpg, loaded (5000lbs) or unloaded, doesnt make a difference. drive like my brother does and it'll get 2 gallons per mile!!
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