302 vs 351W
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Elder User
Joined: Sep 2003
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From: Louisiana
302 vs 351W
I was doing some cam research when I came across this little piece of info. I've read here about the 351W having more torque than the 302. According to this scale it only relates to it being installed in an F150. The F250 HD, which I put in my truck is way lower. I might have to trash some of the garbage on it. LOL.
Power Availability
Power Availability
Last edited by LoosMaster; Apr 2, 2006 at 08:35 PM.
Post Fiend
Joined: Nov 2001
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From: Topsfield, MA
I'm not exactly sure what it is that you're trying to find out...
The 351 has about 40 more ft-lbs of tq than a 302. It has much better low end torque and a better/flatter tq curve across the board.
The 351 has about 40 more ft-lbs of tq than a 302. It has much better low end torque and a better/flatter tq curve across the board.
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Elder User
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From: Louisiana
https://www.ford-trucks.com/user_gal...112252&width=0
I was trying to put the chart up here but the size limit restriction makes it too small and unreadable. I hope the link goes thru this time.
I was trying to put the chart up here but the size limit restriction makes it too small and unreadable. I hope the link goes thru this time.
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Elder User
Joined: Sep 2003
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From: Louisiana
Yes but only if the 351W is installed in the F150 is it greater. The F250 looses power and torque dramatically. I'm assuming it's because of all the emmisions it has to drive. This engine I have is shadowed by them. You can see all the stuff on it in my '88 gallery.
Post Fiend
Joined: Nov 2001
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From: Topsfield, MA
Notice the drop in compression...?
I wouldn't put much thought into this...
I don't think it's the emissions stuff...the emissions on the F-250 and F-350 isn't really that much more than the F-150 - its just that those trucks use air injection on the exhaust manifold at each port. It's got a lot of hoses and lines running around the top of the motor. They're not power-robbing stuff...
I wouldn't put much thought into this...
I don't think it's the emissions stuff...the emissions on the F-250 and F-350 isn't really that much more than the F-150 - its just that those trucks use air injection on the exhaust manifold at each port. It's got a lot of hoses and lines running around the top of the motor. They're not power-robbing stuff...
Post Fiend
Joined: Apr 2004
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From: Lafayette, IN
I'm curious where that chart came from and what years it applies to. There's no way my '90 F150 with its 302 in top condition holds a candle to my '93 F250 and its 351. Not even close. The F250 probably outweighs the F150 by 1500 lbs (xcab vs. reg cab), and I'd bet it would easily outrun it all the way--off the line and in top end, and with a heavy trailer attached. Personally, I'd say that chart probably has some typos--why would the F150/5.8 have MORE torque at a LOWER rpm than the F250HD/F350/5.8? That doesn't make any sense whatsoever.
Jason
Jason
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Elder User
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From: Louisiana
I know, it came from my AllData file for 1988 Ford Trucks. Caught my eye also, that's why I posted it. LOL
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Post Fiend
Joined: Nov 2001
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From: Topsfield, MA
Originally Posted by jroehl
I'm curious where that chart came from and what years it applies to. There's no way my '90 F150 with its 302 in top condition holds a candle to my '93 F250 and its 351. Not even close. The F250 probably outweighs the F150 by 1500 lbs (xcab vs. reg cab), and I'd bet it would easily outrun it all the way--off the line and in top end, and with a heavy trailer attached. Personally, I'd say that chart probably has some typos--why would the F150/5.8 have MORE torque at a LOWER rpm than the F250HD/F350/5.8? That doesn't make any sense whatsoever.
Jason
Jason
Realistically it doesn't matter, there's no point in being hung-up by power ratings...they're not accurate anyway. Consider it about 200hp/300tq and call it a day.
Fleet Mechanic
Joined: May 2004
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From: Montana
It says f150/f250/bronco and e350 all on the first line so this doesnt mean a whole lot. Fact is you take a bone stock 351 and a bone stock 302 set them up on a dyno and make sure they have the same setup, the 351 is bonna make more tourqe and alittle more power. Its bigger its a fact of life.
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Elder User
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From: Louisiana
Originally Posted by EgoMan
It says f150/f250/bronco and e350 all on the first line so this doesnt mean a whole lot. Fact is you take a bone stock 351 and a bone stock 302 set them up on a dyno and make sure they have the same setup, the 351 is bonna make more tourqe and alittle more power. Its bigger its a fact of life.
Hotshot
Joined: Jul 2002
Posts: 14,285
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From: Bend,OR
i think your reading to much into that document as being the standard. you can make that motor into what ever you want for hp/torque. I to installed a 95 5.8 out of an f250. it scoots compared to the 5.0 that was original in my bronco. i just recently rolled my rig so my drivetrain is getting swapped over to an 85 bronco and at that time i will be installing some jba headers, possible cam (35-255-5) and yanking all the smog equipment off because its not working anyhow, plus its only driven twice a month at most 4x4 only. you will also notice an improvment over what your driven