Posted: 4/6/2011 5:57:58 PM EDT
| I just bought a truck with an IMPCO propane dual fuel set up on it. It is an F150 with a 300/6, considering putting it on a 351. Who is out resident experts? |
I had a 150 with that motor and in granny low it damn near climb a wall|
I am not a big fan of IMPCO propane conversions. I feel they are just not that reliable. I am always repairing them on the forklifts and pickup trucks at my place of work. That being said, I am a HUGE fan of the Ford 300 six!! I am a chevy guy, but I would take a Ford truck with a 300 any day! Excellent motor!
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What year is the truck/engine?
Two items of concern on swapping parts: The fuel vaporizer/regulator and carb have to be matched to the engine output to provide proper air and fuel flow. The carb for a six will likely not flow enough air for a V8. On a dual-fuel system, a "Dual Curve" ignition interface is needed. LPG and gasoline have different timing requirements, and chance are the six cylinder system will not work on a eight. Most EFI systems I am familiar with are vehicle/engine specific, mandated by the EPA for street legal conversions. Most companies that make this equipment do not offer many systems for 95' or later vehicles, due to the cost of emission certification. The trick is to have a seamless switchover from gas to LPG while maintaining emission compliance. Check the Impco, OHG (M&M) and Technocarb websites for EFI components. Impco and OHG are pretty much the standard in the industry. Technocarb is a smaller company, but makes the finest quality LPG carbs known to man. MSD - Autotronic Control Corporation Alternative Fuels Division also makes dual curve ignition and fuel controllers. wwwdualcurve.com is the website for components. Not sure if it's still up. Rasoenenterprises.com has a wealth of info on conversions. At the minimum, you will need a new carb (mixer), and a proper adapter to fit the 351 throttle body. A dual curve magic box and a dash mounted switch will also be needed. Do some research and find out what components you already have, the go from there on what is needed for the 351. |
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If this will be a work truck that is not intended to be used for long distance road trips, shitcan the dual-fuel system, and go with a dedicated LPG.
I have a 81' f100 that is a 'retired' farm truck that I am putting back in service. LPG only, as the farthest it will be driven on the road is about fifty miles to and from town. A twenty gallon tank will last about 200 miles or so. The main reason for the conversion is to eliminate gasoline/ethanol related problems, as the truck will not be used on a regular basis. LPG only systems are so simple to install and maintain it's an easy choice. |