i have the 97 4.2l jasper reman in a mint body installed within the last 6 months, k&n intake changed the exhaust to 3" high flow with headers, can i ever reach the cid # to the horsepower # or do i have to chane engine components? from what i gather from the exhaust and intake the hp goes up by 7 hp intake, 20 from exhaust, the ford specs are 205hp stock its a 256 cid am i wasting my time and money? or buy modules and a programmer?

 

You want 255 horsepower from your 255?

Yeah, you're going inside the engine to get that kind of jump. Change the cam, head work, valves, et al.

You aren't getting 20 HP's from just an exhaust alone or a programmer alone. Changing an intake (I assume you mean the intake tube and filter, not porting/polishing the intake manifold) won't do much by itself, either.

 

how much hp can i get from this bad design 4.2l with after market parts ?stock motor changing cams, bearings, ford makes the ford racing kit rousch kit for the 4.2l mustang same engine in design but same programming?

 

WIth enough money anyone can get A race truck

 

nice pic twins i want the most from the first gen 4.2 you gotta tow from that pic no way yah got outta that lol

 

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Yeah i got a tow.... To find your limits you ahve to push... I push the mud... THats what i live by. LOL

To get true power your guna have to tear your girl apart and think about cams and what not. But a tuner will help a bit. I think that they make supercharger kits for yours as well... I might be wrong. LIke i said you can do anything with enough money!!

 

thanx for the post reply, i know by all of your post's that after market isnt your thing, but cams for custom are .ooo1 of and inch about 200 bucks per cylinder? i just wanted your view on aftermarket our maybe your just a stock in the mud.

 

I have never looked at the 4.2 but i know a lot of people on here as well as mustang sites calim you can get a bunch of power out of tehm... But it takes $'s. To me it isn't worth it. There is not excuse for displacment. Its just depends on whats it worth to you. Im sure that for $3000 You could find a doner 4.6 with computer and all and put it in and see a big differance and that might cost as much or less and be easier. Thats just my View.

 

this is a 4.2l bring all the air i can into the throttle body k&n, throw it into the motor put it out with hooker headers, im trying to pull all the power i can with this 4.2 and all the techs tell me your full of it, and from all the post your 98 seems to be fully stock and needs a tow lol just fun

 

What are the techs telling you to do? Help me help the next guy asking the same ?'s. My truck is stock for the most part and im no expert but i do know a bit. If you know somehting else teach me so that i can learn for the next!

 

i bought a 1997 ford f150 xl 4x4 2 years ago, the engine hydrolocked at 55,000 and just put a jasper reman in it, built it up intake exhaust, and try to compare the new gen trucks, 2007 chevy 6 cyl 190 hp? and i really don't think anybody knows the power from the esg ford 1997

 

That sucks that you hydralocked it. Thats no fun. Had people do that iwth seafome b4. It sucks. I hope you get where your trying to get to. I do know that chevy has more aggresive cam's in there trucks so that higher in the band they create more power.

 

To get any real hp out of your motor you are going to have to go s/c or turbo. The 4.2 is a stroked 3.8. Its a pusrod motor, so only one cam. I dont remember ford putting a 4.2 in a stang, but the truck stroker is a popular v6 mod. Underdrive pullies, electric fan, gears, apply and will make the truck feel stronger in acceleration. You can do that without tearing into the motor. Also an old stang trick (v8 anyways) is higher ratio roller rockers which give you a little more lift at the valve and the roller bearings reduce friction. You might want to try stangnet or corral (mustang forums) to see what those guys are doing. There is a v6 tech section.

 

Your right... The 3.8 was in the stange. That was my bad. I was wrong.:o

 

but the truck stroker is a popular v6 mod. Underdrive (pullies, electric fan, gears), what is the after market? pullies?elec fan? gears? part?s this is a 1997 4.2l