Power Guess...
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Elder User
Joined: Apr 2010
Posts: 518
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From: Mount pleasant, michigan
Power Guess...
Well i was asked the other day what I think my truck makes for Power, like the Horse kind, lol, and Torque. I didnt really care since its just a truck, But My truck is a 78 F-150 Ranger, 351M, '86 4 bbl. carb, Edelbrock Performer 400 intake, Steel tube high flow headers, True-Dual straight pipes, C6 trans....all the good stuff! So, what do YOU think im making? (Guess at the wheel horsepower)
Zombie Survivalist
Joined: Feb 2009
Posts: 14,809
Likes: 3
From: Rock Springs, WY, USA
if the cam timin has not been changed in any way, i doubt youre makin 150 HP and 200 lb/ft at the rear wheels. fix that timin and you can watch it jump about 100 points in both departments.
Zombie Survivalist
Joined: Feb 2009
Posts: 14,809
Likes: 3
From: Rock Springs, WY, USA
you have to remember your mods and "all the good stuff." you know what, youre right though, i was givin ya and optimistic number. youre probably closer to 110 or 120 at the rear wheels.
Post Fiend
Joined: Jul 2006
Posts: 6,948
Likes: 44
You asked a question and maybe missed the part where he suggested that you were not making 150 Hp to the rear wheels?
Parasitic losses through the trans and t-case would kill some serious power.
Your factory numbers were based on engine power measured at the crank, not at the rear wheels as mentioned.
The 160 Hp was with a fresh engine, loss of compression, weak valve springs, and an otherwise tired engine might not be close to this.
Unless you have changed more than what you have listed, I would not have very high expectations.
I think "junior" as you called him was being reasonable, yet very optimistic. 150 hp at the tires could be just about right.
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Zombie Survivalist
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From: Rock Springs, WY, USA
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Zombie Survivalist
Joined: Feb 2009
Posts: 14,809
Likes: 3
From: Rock Springs, WY, USA
the 351M/400s came from the factory with 6 degrees of cam retard for stupid emissions reasons, that also landed the motors the tag of "boat anchor." by puttin an aftermarket timin kit, and ill emphasize NOT a stock replacement (that means go to crower or comp or lunati or i dont care...), it corrects this, and then you can say hello to an instant ~100 HP and lb/ft.
Post Fiend
Joined: Jul 2006
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I dont want to start a huge war regarding the 335 series engine, I know this can strike some of the fellers the wrong way, but I can tell you that I recall a magazine article from some years back putting a Bronco on a dyno and coming up with about 100 HP.
Not long ago we took a 77.5 truck with a 351M and gave it all she had on a rear wheel dyno.
While we worked hard to blow it up, we only succeeded with a whopping 88 HP.
Yes, it was tired, and it had seen its better days, but this too had an aluminum intake, some headers, and a 4 BBl carb.
Again, this is not a poke at the 335, just playing the devils advocate here, and offering some insight, and experience with these things.
Ive got a buddy that runs a couple 400's and they run real well, though I poke at him a little and ask when he is going to build a 460????? For the sake of this thread, Ive got no opinion either way,,,,,,,,,this time. Lol.
Not long ago we took a 77.5 truck with a 351M and gave it all she had on a rear wheel dyno.
While we worked hard to blow it up, we only succeeded with a whopping 88 HP.
Yes, it was tired, and it had seen its better days, but this too had an aluminum intake, some headers, and a 4 BBl carb.
Again, this is not a poke at the 335, just playing the devils advocate here, and offering some insight, and experience with these things.
Ive got a buddy that runs a couple 400's and they run real well, though I poke at him a little and ask when he is going to build a 460????? For the sake of this thread, Ive got no opinion either way,,,,,,,,,this time. Lol.
Zombie Survivalist
Joined: Feb 2009
Posts: 14,809
Likes: 3
From: Rock Springs, WY, USA
I dont want to start a huge war regarding the 335 series engine, I know this can strike some of the fellers the wrong way, but I can tell you that I recall a magazine article from some years back putting a Bronco on a dyno and coming up with about 100 HP.
Not long ago we took a 77.5 truck with a 351M and gave it all she had on a rear wheel dyno.
While we worked hard to blow it up, we only succeeded with a whopping 88 HP.
Yes, it was tired, and it had seen its better days, but this too had an aluminum intake, some headers, and a 4 BBl carb.
Again, this is not a poke at the 335, just playing the devils advocate here, and offering some insight, and experience with these things.
Ive got a buddy that runs a couple 400's and they run real well, though I poke at him a little and ask when he is going to build a 460????? For the sake of this thread, Ive got no opinion either way,,,,,,,,,this time. Lol.
Not long ago we took a 77.5 truck with a 351M and gave it all she had on a rear wheel dyno.
While we worked hard to blow it up, we only succeeded with a whopping 88 HP.
Yes, it was tired, and it had seen its better days, but this too had an aluminum intake, some headers, and a 4 BBl carb.
Again, this is not a poke at the 335, just playing the devils advocate here, and offering some insight, and experience with these things.
Ive got a buddy that runs a couple 400's and they run real well, though I poke at him a little and ask when he is going to build a 460????? For the sake of this thread, Ive got no opinion either way,,,,,,,,,this time. Lol.
lmao! i guess theres a first time for everything... dont be discouraged by this though. the 335 series motors can be made into screamin beasts, and low-end grunt monsters, fairly inexpensively. but the "boat anchor" nickname did come about for a reason... thanks a bunch for your crappy de-tune ford!
