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68 Suburban · 05-28-2003, 12:56 AM

I have had a few people PM me about how I am getting 17 mpg in my burb. I posted the following to a question on my Gas tank for sale post. I thought I would post it here so it would be easier to find:

L-48 350, HEI, Plugs gapped at 60, Timing set by ear, 1406 Edelbrock carb leaned 2 steps on the chart in the book, 5w30 motor oil, turbo 400 Trans, 3.08 rear end, Accel 2 stage oil charged air cleaner. 55 lbs of air in the tires that don't have an agressive profile.

Things that I am going to try next: 0w30 ynthetic motor oil, syntetic gear lube. Fumigating the fuel with propane. Vortec Heads.

Huck has basically the same set up as me, but has a 5 speed stick and is getting 20 mpg.

Here is a link to jku72 post. He is getting over 18 mpg:
http://67-72chevytrucks.com/vboard/s...threadid=53670

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05-28-2003, 12:56 AM	#1
68 Suburban Registered User Join Date: Oct 2000 Location: From Chicago, Live in Phoenix, AZ Posts: 6,802	Answers about my 17 mpg in my Burb. I have had a few people PM me about how I am getting 17 mpg in my burb. I posted the following to a question on my Gas tank for sale post. I thought I would post it here so it would be easier to find: L-48 350, HEI, Plugs gapped at 60, Timing set by ear, 1406 Edelbrock carb leaned 2 steps on the chart in the book, 5w30 motor oil, turbo 400 Trans, 3.08 rear end, Accel 2 stage oil charged air cleaner. 55 lbs of air in the tires that don't have an agressive profile. Things that I am going to try next: 0w30 ynthetic motor oil, syntetic gear lube. Fumigating the fuel with propane. Vortec Heads. Huck has basically the same set up as me, but has a 5 speed stick and is getting 20 mpg. Here is a link to jku72 post. He is getting over 18 mpg: http://67-72chevytrucks.com/vboard/s...threadid=53670 __________________ __________________ Just sitting here contemplating contemplation. Last edited by 68 Suburban; 05-28-2003 at 09:49 AM.