Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > 6.2L V8
Sign in using an external account
Register Forgot Password?

6.2L V8 Discuss the 6.2L V8

CNG/LPG Gaseous Engine Prep Package - Worth It?

LinkBack Thread Tools Search this Thread
Old 07-15-2013, 10:59 PM
Powelligator's Avatar
Powelligator Powelligator is offline
Senior User
Join Date: Apr 2010
Posts: 237
Powelligator is starting off with a positive reputation.
CNG/LPG Gaseous Engine Prep Package - Worth It?


I'm in the process of going through the list of options for my new truck, a gas engined F-350 Lariat SuperCab with an honest to goodness 8 foot bed. According to a couple dealers I have talked to, such a truck has never been built by Ford, even though it's a mathematical possibility given the 2014 order guide.

So my question is this:

Option code 98F is the CNG/LPG Gaseous Engine Prep Package. According to the description it includes hardened intake valves and valve seats. For me I don't ever plan on converting the engine to propane but I wonder… Would the hardened valves and valve seats be an advantage for longevity in a standard unleaded gas engine?

My 460 powered '94 F-250 with 248K miles is still going strong after 19 years and I'm hoping the new truck will last as long.


Reply With Quote
Old 07-16-2013, 03:50 AM
03 SVT VERT 03 SVT VERT is offline
Senior User
Join Date: Jan 2008
Posts: 451
03 SVT VERT has a good reputation on FTE.03 SVT VERT has a good reputation on FTE.03 SVT VERT has a good reputation on FTE.
The reason for the hardened valves/seats is because, in a CNG/LPG vehicle, no gasoline flows over the intake valves to cool and lubricate them. This means you often end up with valve recession/burnt valves if you don't use a valve designed with CNG/LPG applications in mind.

Whether or not it would help with the longevity of a gasoline-only engine, I couldn't say. They don't clarify exactly what they mean by 'hardened', be it a coating, a different alloy, etc. Often times there is some kind of tradeoff. You might get a more temperature resistant valve, but unfortunately you also get a valve with less wear and corrosion resistantance.

If it was me, I would probably go for it. Not necessarily for longevity reasons, but because, when it comes time to sell the truck, it could add to the resale value (as well as increase the potential pool of buyers). Who knows, maybe in ~15 years lpg/cng conversions will be the norm. You just don't know.
Reply With Quote
Old 07-16-2013, 03:50 AM

Similar Threads
Thread Thread Starter Forum Replies Last Post
Fuel Mileage jedi99 Super Duty & Heavy Duty 0 03-01-2015 05:57 PM
Ford CNG F-150 Sales Pick Up Ford-Trucks Editors Alternative Fuels, Hybrids & Mileage 1 08-09-2014 01:28 PM
1991 460 need some EFI education cngf350 1987 - 1996 F150 & Larger F-Series Trucks 11 02-28-2014 01:21 AM
Removal of the CNG tank BPD 1997 - 2003 F150 2 07-22-2013 12:42 PM
2008 Ford F-250 6.4L Engine on CNG AlbyVA Bio-diesel, Propane & Alternative Diesel Engine Fuels 12 09-21-2012 08:46 PM

Go Back   Ford Truck Enthusiasts Forums > Performance, Engines & Troubleshooting > 6.2L V8

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump

Participate In The Forums

Create new posts and participate in discussions. It's free!

Sign Up »

All times are GMT -5. The time now is 01:23 PM.

Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Terms of Service - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup