Hot Rod Forum : Hotrodders Bulletin Board - Reply to Topic -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine> Poor Gas Mileage
User Name
lost password?   |   register now

Thread: Poor Gas Mileage Reply to Thread
Send Trackbacks to (Separate multiple URLs with spaces) :

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Additional Options
Miscellaneous Options

Topic Review (Newest First)
07-30-2003 03:39 PM
DoubleVision if your to stay with the crate motor, there are some things you can do to help mileage, you need more torque for pulling power, I would go to comp cams or crane cams site and look at there RV cams, some increase milage and are made for towing. a cam such as the edelbrock performer cam would be a improvement, add with it a set of tri-Y headers, dual exhaust, turbo mufflers, a set of spiral core plug wires, a MSD intensifier kit, and a K&N airfilter and fabricate up a fresh air induction system. these small mods will be slightly cheaper than a rat motor swap, and will likely get you the mileage increase your looking for. it would also be of benefit to go with a lower rear gear to slightly increase cruise RPM`s to about 1900-2200 RPM so more torque will be avalible at the higher RPM. but the biggest improvement you could make to your 350 would be to throw in a 400 crank and make it into a 383 with the same mods listed above.
07-30-2003 02:26 PM
gt2betubbed With the amount of weight your dually runs, it's making your 350 run harder to get it going. 4 Jaw is right about the big boy doing better on gas even though it sounds funny. I wouldn't change the carb on it, the Edel's usually keep the mileage down compared to Holleys.
07-30-2003 02:05 PM
4 Jaw Chuck Throw a 454 with a stock quadrajet in there and watch your mileage jump to 10-13 mpg. More power will make it nicer to drive and keep you out of the secondaries, thats why your truck is getting such poor mileage. Have you tried tuning your secondary weights?
07-30-2003 01:03 PM
Poor Gas Mileage

I have a '64 Chevy one-ton dually with a stock 350 (4K miles on crate motor), new 600 Edelbrock carb, 700R4, '86 rear-end with 3:73 gears. Timing & vacuum are OK. I run about 1600 RPM at 60 MPH. (VDO speedometer accurately calibrated) I am only getting about 9 miles-to-the-gallon. Would a 600 Holley be better? And if so, any recommendations on jetting, etc.?

Ed in Mississippi

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -6. The time now is 01:54 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.