Question about 1988 Ford F 250
WE ARE USING OUR F250 FOR TOWING OUR 5TH WHEELER CARAVAN,TRAVELLING ON RELATIVELY FLAT COUNTRY IT WORKS QUITE WELL ITS WHEN YOU START CLIMBING IT APPEARS TO BE LOSING POWER POSSIBLY MORE THAN IT SHOULD. THE VAN WEIGHS 3200 KLS.THE MOTOR IS A 5LTR EFI AUTO.IT HAS BEEN SUGGESTED WE FIT A DIFFERENT CAMSHAFT TO TMPROVE THE TORQUE BASICLY IN THE 1500 TO 3500 REV RANGE. ANY HELP IN THIS MATTER WOULD BE GREATLY APPRECIATED CHEERS.
Here's another alternative. Check RV forums re: gas motorhome's for what they did to improve their mileage & torque. I know your not a motorhome, but your after same results. At the time that I was at one of the larger motorhome sales places in our area, the "Banks" exhaust & intake system was most common aftermarket install for Better mileage, better breathing & better performance. A lot of the gas Motorhomes were experiencing exhaust manifold warpage due to climbing hills etc, and the manifolds were getting red hot & warping. The banks exhaust system provided them with better flow , increased gas mileage & better torque. You should even see a difference by just having an exhaust place that has custom bending, and know what they are doing, fit you with larger diameter, dual exhaust right from the manifolds back, then install a K& M high flow air filter to help. The part you need to watch out for getting carried away with the cam idea. New cam, may require new lifters, then, timing chain & gears etc, Do your research on both, about necessary add-ons, to reap full benefits as claimed. One other thing you may consider is finding out if manufacturer of yor truck has an alternate tire recommended. A lower profile tire will slightly increase that torque, but your fuel mileage may drop slightly also. A rear end gear ratio change will help on one end , but mileage suffers on the other again. Personally, I'd go "Banks" exhaust first, & new high flow air filter, for the simple fact that even if you go with new camshaft, it will probably recommend different exhaust to maximize the benefits of the cam anyway. My feeling is you can **** in all the extra fuel/air mixture you want, but if it can't flow out , what good will it do. Good Luck.
Posted on Jan 09, 2009
It ould be expensive to replace the cam for a higher torque range. Firstly, I would look p the torque curve on your engine and then try to keep the rpms at the peak torque rpms when going up hill. If this isn't enough, I would have someone put a power chip in your engine computer. Find a good reputation company though. The chip will usually advance the timing and deliver more fuel to the injectors. Ask what the chip spcifically does if you can. (Ford frowns on power chips, but if your warranty is uo, no problem.)
A last thing is to install new injectors that have a higher flow rate (lbs/hr) than your exsiting injectors. This will require the power chip though since your existing chip is designed for max fuel economy and not max power.
Posted on Jan 09, 2009
Tips for a great answer:
Sep 23, 2016 | Toyota LandCruiser Cars & Trucks
Apr 03, 2016 | 2006 Nissan Pathfinder
Mar 14, 2013 | 2003 Chevrolet Silverado 1500
May 14, 2010 | 2001 Dodge Caravan
Oct 05, 2009 | 2007 Lincoln MKX AWD
Sep 18, 2009 | 2001 Dodge Caravan
Aug 30, 2009 | 1998 Dodge Grand Caravan
Aug 04, 2009 | 2001 Dodge Grand Caravan
May 02, 2009 | 1995 Ford Windstar
628 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: