Dual Fuel 351C - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old 05-18-04, 10:44 PM Thread Starter
SBR Supporter
Steffo's Avatar
Join Date: Dec 2003
Location: Sydney, NSW, Australia
Posts: 1,926
Dual Fuel 351C

I'm seeking advice as to what modifications would be the optimum to perform to a stock 1972 XA Fairmont 351C which has already been converted to dual fuel Petrol/LPG. The target is 300hp - 350hp (220kW - 260kW) at the crank. Forced induction is an option, or anything else that would work, I just don't want it to be overly expensive. All advice is most appreciated.

Steffo is offline  
Sponsored Links
post #2 of 2 (permalink) Old 05-19-04, 09:21 AM
351 XE on LPG
Join Date: Jul 2003
Location: Perth, Western Australia
Posts: 742
Re: Dual Fuel 351C

Forget about running dual fuel ! You cannot tune a motor to suit both fuels, as they both have different burning properties, so a compromise is required and you can never get the best out of either fuel.

Remove the petrol tank, fuel pump and carby and convert to straight LPG. It's the best thing I've done. We've got 3 vehicles at the moment all running straight gas, (XE 351C, XY 302W, 1993 Patrol 3.0). If your motor is built and tuned for gas, it will end up making more power then if you left it on petrol. Your motor will also last longer on gas, but that's another discussion. LPG is not a gutless taxi fuel as ignorant people would have you believe, but the secret to this cheap source of HP is slowly getting out there. It took me a while to research my 351C build and source the right cam profile, etc. That was over 2 years ago, but it sure was worth the effort. I now have heaps of tyre turning torque and an XE Fairmont that I can drive everyday and never have to worry about the cost of fuel. An LSD and 255's work hard to keep traction with a long 2.77 rear end.

For starters - fit an Impco 425 carby on an 850 Holley squarebore base plate. Recurve and advance the distributor to suit gas, fit a set of ICE leads, fit the electronic dissy and ignition system from an XE. When the time comes, fit a set of 302C heads. Depending on who you listen to, this should give you somewhere between 10.5 and 11.4 to 1 compression. LPG just loves compression, but beware - not all LPG is the same. Over here in Perth, I use Kleenheat Autogas which is usually 100% propane. Don't touch BP. It has a lot more butane in it which lowers the octane level. The more propane the better.

Hope this helps you on your way.
Rhett is offline  
Sponsored Links

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Engine Specific Tech > Cleveland Tech
Gear in this thread - Powered by O'Reilly Auto Parts

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
EF Dual Fuel ..Smart Lock Probs EFbadboy Interior | Electrical | ECU 12 07-31-04 09:10 PM
TSB 11/04 - AU 250kw Fuel Starvation russellw General Tech 0 04-23-04 11:24 PM
U.S.A.:Bill Ford: Steeper gas taxes would fuel hybrid demand Stacy94PGT Ford Worldwide News 1 04-08-04 07:45 AM
U.S.A.:World's most advanced fuel station opens in San Diego Stacy94PGT Ford Worldwide News 0 08-31-03 08:14 AM
Ford's goal of boosting SUV fuel economy proves elusive Stacy94PGT Ford Worldwide News 0 04-19-02 08:47 AM

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 On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome