Help with 5.8 performance upgrade
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Help with 5.8 performance upgrade
First time Post I have a 1994 F350 4X4 XL with 5.8 5spd Got the truck off my Pops he has babied the truck for 105000 miles, looking for some knowledge . Want to increase my hp & torque... Heads? cam? Headers? will stock fuel injection intake be fine or should I replace that as well. Thanks for any guidance you can give Paul 
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Joined: Jul 2009
Posts: 3,635
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From: Lansdale, PA
3-4k will get you lots of power.
392-427 stroker, heads, intake, cam, exhaust. If you do work yourself then great.
Stroker is optional but the other stuff is needed.
Plenty of knowledge already here in the forum, just gotta search.
First start with a good tuneup. Msd coil, good quality wires cap and rotor, fluid change and filter swap. All fluids and all filters... Synthetic if you can.
Long tube headers and high flow cats, and 3" exhaust. (Personally I'd do 4" diesel exhaust because its cheap and easy to find, and any back pressure you need will come from the headers and cats)
Heads and intake are a combo. 1.7 roller rockers will allow the current cam to be "acceptable" but I'd want more.
Before cam swap you should get a chip with programming software. Not an off the shelf chip, quarterhorse or tweecer is what you need. Then upgrade injectors to 30s and retune the truck.
Depending on money left over, I'd say cam swap, but personally I'd do a stroker kit with cam to match.
392-427 stroker, heads, intake, cam, exhaust. If you do work yourself then great.
Stroker is optional but the other stuff is needed.
Plenty of knowledge already here in the forum, just gotta search.
First start with a good tuneup. Msd coil, good quality wires cap and rotor, fluid change and filter swap. All fluids and all filters... Synthetic if you can.
Long tube headers and high flow cats, and 3" exhaust. (Personally I'd do 4" diesel exhaust because its cheap and easy to find, and any back pressure you need will come from the headers and cats)
Heads and intake are a combo. 1.7 roller rockers will allow the current cam to be "acceptable" but I'd want more.
Before cam swap you should get a chip with programming software. Not an off the shelf chip, quarterhorse or tweecer is what you need. Then upgrade injectors to 30s and retune the truck.
Depending on money left over, I'd say cam swap, but personally I'd do a stroker kit with cam to match.
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Joined: Jun 2006
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From: Ottawa, Ontario
Given that this is for an F350 a stroker is probably the way to go, even a 393 with aftermarket heads and intake and a mild cam will be a hugh upgrade, and with an EFI friendly cam you could potentially run it on a 460 computer with 24lb injectors and not need a tuner at all.
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