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Old 03-21-2017, 11:18 AM   #16
otter5555
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Join Date: Jan 2017
Location: nm
Name: don
Age: 65
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Year: 1975
Model: k10
Engine: 350

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Originally Posted by vkh View Post
Nice truck. My 81 c2500 is my daily driver, chugs fuel but is a ton of fun .

mine gets 17.7-18 mpg every tank

re-jetted the 600 holley, advanced the timing, free flowing turbos and a super LIGHT foot

i seldom get over 50 mph here in the mountains. that helps a lot. also, the sm465 does better on gas than the th350/400.

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Old 03-21-2017, 12:32 PM   #17
 
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vkh
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Join Date: May 2015
Location: western Montana
Name: Var
Age: 19
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Year: 1981
Model: c2500
Engine: 454

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Originally Posted by otter5555 View Post
mine gets 17.7-18 mpg every tank

re-jetted the 600 holley, advanced the timing, free flowing turbos and a super LIGHT foot

i seldom get over 50 mph here in the mountains. that helps a lot. also, the sm465 does better on gas than the th350/400.
Nice, I was getting about 10. Most my driving is freeway and I have trouble keeping it at 80 (limit is 80 mph in Montana), lead foot kinda runs in the family. I have a mild 454 with a 800 cfm quadrajet. I recently installed a a/f gauge and I'm already seeing improvements since I changed my rods. Haven't been able to check mpg but I know it's better. With alil more tuning I should get more mileage and power, also I'm going to play with a carb spacer.

My th400 is probably the least efficient trans option, but seeing as it puts up with my abuse I can't complain.
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Old 03-21-2017, 10:30 PM   #18
otter5555
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Name: don
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Year: 1975
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the auto glass guy showed up @ 10am

worked for 2 hrs and finally cracked the new windshield

said it'd be a week before he can come back

oh well,

i duct taped the cracked windshield in so i can drive

i will tint the other windows tomorrow
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Old 03-24-2017, 09:32 PM   #19
otter5555
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Model: k10
Engine: 350

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got my bed mat and heater rheostat
today
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