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Old 07-06-2012, 06:02 PM   #7
kwin
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Join Date: May 2011
Location: Grande Prairie, Alberta
Posts: 368
Re: Mpg-bbc vs sbc Suburban

Quote:
Originally Posted by DBLSPRT68 View Post
I would think the lower rear end gears were swapped out for taller gears. A SBC V8 with 3.08 rear gears gets about 20 MPG. Also, my old 89 454 Suburban got about 10-12 MPG; doing 70 AND pulling a 5000 lb car/trailer combo!
That was my thought, and its sluggish off the line so a gear swap would make sense.

Keith
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