Thread Tools Search this Thread Display Modes
Old 03-06-2004, 06:50 PM   #1
New Member
JMChrystie's Avatar
Join Date: Sep 2003
Posts: 3
Question MY Sick 310

My 454 engine blew last year and I am getting ready to put in a new one. My thoughts are a GM crate with a fuel injection system. With gas expected to hit 3 a gallon, I am looking to get the best millage I can.
What Fuel sustem should I get? Any thoughts on this I would love to hear!!



JMChrystie is offline   Reply With Quote
Old 03-07-2004, 08:01 AM   #2
Rivet Master
87MH's Avatar
1978 31' Sovereign
Texas Airstream Harbor , Zavalla, in the Deep East Texas Piney Woods on Lake Sam Rayburn
Join Date: Jan 2003
Posts: 2,435
Images: 292
Tough Question!


Your situation is one that we (MH owners) all will probably have to face.

I agree with your assumption that gasoline (and diesel) prices will inflate in the near future.

If we are talking strictly gas engines, in my opinion, a fuel injection system will be more fuel efficient, all other parameters being equal (no emission constraints).


Your 310 probably does not have a computer, to go with FI you would have to procure one (salvage?), and have someone tune it for the MH application.

In my situation, (close to 16,000 lbs, with a sometimes toad), I need all the power the 454 puts out at 3000 rpm at 60mph. This may or may not be too fast for the 5.9 liter cummins (my personal diesel engine of choice....lots of 'em, they do fit into the engine compartment, weight fairly comparable to the 454). So.....depending on your rear end and torque/RPM requirements, an overdrive/underdrive may (or may not) be an additional investment.

Another thought (concern?), even with gas at $3.00 per gallon, you'd have to drive a bunch of miles to justify the initial expense of converting to diesel.

Be sure to go with a header/exhaust system tuned for MH applications (max efficiency 2500 to 3200 rpm), and eleminate all the intake air restrictions you can. Banks makes a good system, but certainly there are others available.

Good luck! Please keep the Forum posted on your decisions, progress, and results.

We're all just the proverbial "one hard hill pull" from your situation.


"Suck it up, spend the bucks, do it right the first time."

WBCCI # 1113
AirForums #1737

Trailer '78 31' Sovereign

Living Large at an Airstream Park on the Largest Lake Totally Contained in Texas
Texas Airstream Harbor, Inc.
87MH is offline   Reply With Quote
Old 03-07-2004, 10:57 AM   #3
4 Rivet Member
qqq's Avatar
Join Date: Dec 2002
Posts: 403
Images: 4
In Europe we power these big engines with LPG (costs half price)
How much is a gallon of LPG in the US?

qqq is offline   Reply With Quote
Old 03-07-2004, 02:53 PM   #4
Rivet Master
ALANSD's Avatar

1966 26' Overlander
Woodstock , Georgia
Join Date: Feb 2002
Posts: 8,521
have you checked the thread Al posted on his engine replacement? Lots of info on the engine choice, cost and such....
engine r&r

My opinion would be to weigh the overall cost of a new or reman 454 versus the other choices, adding in an exhaust upgrade, and better starter, and alternator.
With good maintenance this might be the best choice. The Cummins conversion could be a great idea if it fits the budget. There is some info here on that as well if you do a search you might pull it up.
1966 overlander..sold
AIR #005
Please visit our blogs and web pages:
ALANSD is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Featured Campgrounds

Reviews provided by


This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 03:45 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.