The 1947 - Present Chevrolet & GMC Truck Message Board Network

The 1947 - Present Chevrolet & GMC Truck Message Board Network (https://67-72chevytrucks.com/vboard/index.php)
-   67-72 Chevrolet & GMC Pickups Projects and Builds (https://67-72chevytrucks.com/vboard/forumdisplay.php?f=115)
-   -   Attention Gear heads (https://67-72chevytrucks.com/vboard/showthread.php?t=458465)

realsteelGM 04-10-2011 02:39 PM

Attention Gear heads
 
Just took my first road trip on a new engine break-in. The engine is a 283 with a sm420 and 3:54 gearing. My fuel mileage was a whopping 13 miles to the gallon, I figured it would be up around 27. Looks like I'll be tinkering with jet calibration in the eddy carb. If this doesn't bring up the mileage should I swap out the rear end for 3:08's or change tranny for an overdrive? :smoke:


All times are GMT -4. The time now is 09:11 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright 1997-2025 67-72chevytrucks.com