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Old 04-06-2015, 02:07 AM   #4
rich weyand
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Join Date: Apr 2014
Location: Bloomington Indiana
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Re: What could i possibly get for MPG with these two setups?

Those are kind of weird setups. I think the bbc would tolerate the 3.73 better than either of the sbcs, but with 33" tires, I would definitely go 4.11 on any of them.

TBI will give you better mileage than the carb setup DustyNova is talking about. I dunno. I think with the sbcs you would probably get 14-18 because of the overdrive and the TBI.

Put a carb 350 on there without overdrive and you are looking at 10-12. That number I know for sure!
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Rich Weyand

1978 K10 RCSB DD.
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