Propane and proprane accessories
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Propane and proprane accessories
I haven't been in this forum for years since I sold my 69. I was wondering if anyone knows how well propane conversions work on older fords. My main question is what kind of mpg they get. I saw an article in an issue of a 4X4 magazine that they did on a flat bed chevy. They said the power was better but made no mention of mpg. Just wondering if anyone had info. Sorry if this has been asked a 1000 times before.
Thanks!
Thanks!
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From: East Flat Rock NC
stumprider69
There is a forum down the page for alternate fuels that may answer your ???
I have read many threads in the other forum! Hope this helps?
P.S. from what I have read theres no big savings like there used to be!
Wally Womack
There is a forum down the page for alternate fuels that may answer your ???
I have read many threads in the other forum! Hope this helps?
P.S. from what I have read theres no big savings like there used to be!
Wally Womack
Elder User
Joined: Apr 2003
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Mpg won't be any better on a stock engine, perhaps even worst. If you can get the lpg system for cheap, say a few hundred bucks-perhaps.
On a stock engine the best thing you can do is get the dizzy recurved, lpg likes alot of initial advance-the stock smog advance will work, but will build alot of unwanted heat.
Overall, I would say nowadays it may not be worth it, unless you can get the stuff cheap, installed cheap and certified.
On a stock engine the best thing you can do is get the dizzy recurved, lpg likes alot of initial advance-the stock smog advance will work, but will build alot of unwanted heat.
Overall, I would say nowadays it may not be worth it, unless you can get the stuff cheap, installed cheap and certified.
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From: Carmichael, ca
Propane produces less power unit for unit compared to gas. The way to get around the lost power is to increase the compression in your ingine. You can go as high as 11 or 12 to 1, though higher than 12 to 1 casues problems. The up side of propane is that the negine lasts longer and depending on where you live, the propane is cheaper than gas.
By the time you increase the compression and modify the engine to take advantage of the increased compression, ie heds, headers, exhaust, intake manifold, cam, etc and getting a certified system and the propane tank, the cost of all the work may not make it worth the conversion for you.
By the time you increase the compression and modify the engine to take advantage of the increased compression, ie heds, headers, exhaust, intake manifold, cam, etc and getting a certified system and the propane tank, the cost of all the work may not make it worth the conversion for you.
Senior User
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The cost of Propane has skyrocketed in the last couple years. With the loss of mpg and the higher cost of propane, it is pretty much a wash... costs about the same as gas maybe a tiny bit cheaper, but is a much bigger PITA because of availability of fuel.
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i had a '79 f150 with a 460 c6 and 3.50 gears on propane it got 8 mpg on the highway. with the cost of propane vs the cost of gasoline it cost the same as 13 mpg on gasoline. i see propane setups all the time in the junkyard and they dont cost that much (about 50 bucks for the fuel valve, evapourator,and mixer) i doubt it would be worth it if you had to buy the parts new.
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back in the early 80s propane was selling for about 20 cents Ltr in alberta canada at that time it was worth it i had the system on my 79 f350 super cab 460 auto 3.73 rear gears i ran 10.1 comp lots of advance with recurved dist removed intake manifold and blocked heat riser passages 160 thermostat duel 425 impco mixers holly carb base plates setup to all open at the same time truck had 300.000 kms before i pulled and rebuilt it and the bottom end was still like new valve covers were as clean as the day i put them on finaly parted the truck out had the system in my yard for a few years when i came time to restore my current truck propane in this country was selling for 80 cents ltr junked the parts in faver on gas moral of the story
want it to last go propane want milage go gas as i only got about 9 mpg [can gal] compared to 16 mpg on gas regurds joe
want it to last go propane want milage go gas as i only got about 9 mpg [can gal] compared to 16 mpg on gas regurds joe
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