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**67carry-all** · 08-14-2008, 08:32 PM

Suburban with 292-2bbl/THM-400 getting around 14 mpg. Still some tuning to do and HEI to add - I think 15-16 should be possible. I remember this truck getting in that range when new with the stock 1-bbl.

08-14-2008, 08:32 PM	#6
67carry-all Senior Member Join Date: Jul 2008 Location: Central Coast, CA Posts: 277	Re: MPG on a Burb Suburban with 292-2bbl/THM-400 getting around 14 mpg. Still some tuning to do and HEI to add - I think 15-16 should be possible. I remember this truck getting in that range when new with the stock 1-bbl.