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extremely slow 5.8

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Old Mar 20, 2016 | 03:27 PM
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extremely slow 5.8

so I'm looking to buy an 89 f250 with a 5.8. but it's really slow. is that normal or is it bc it has 35s? and the gearing is for a stock f250? thanks
 
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Old Mar 20, 2016 | 04:06 PM
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They aren't known to be fast trucks but bigger tires could make a difference,There's a few different ratios it could have...3.55 4.10..etc
4.10's and 35s shouldn't be too bad but 3.55's would be a dog...probably shift to low and have to downshift anytime you want to speed up

Is it standard or auto trans?
 
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Old Mar 20, 2016 | 04:48 PM
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The 5.8 is not very fast in these trucks. We have a 93 dually with 3.55 gearing and it can't get out of it's own way.
It will pull anything we throw at it, but it won't do it fast.
 
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Old Mar 20, 2016 | 05:00 PM
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Yes 35's will make the truck slow but are you sure it's a 5.8 or are you just going by what the seller says?
 
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Old Mar 20, 2016 | 05:08 PM
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there are other factors ... my truck is a 5.8/c6/4:10 with reg. cab. long box 2wd ...
after test-driving a 5.8/c6/unknown rear end in an ext. cab long box 4wd, my old work truck felt like a racehorse.
stock tires on both, by the way.
 
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Old Mar 20, 2016 | 05:52 PM
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like this truck is really slow I was stepping on it and it wasn't moving. there's a crack in the exhaust manifold but I doubt it was that much of a performance difference. it has a stock rear, so probably a 3.55. and yea it is a 5.8, I saw it and drove it. it's an auto tranny
 
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Old Mar 21, 2016 | 02:01 PM
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They're pretty damn slow...so slow I've thought I was breaking down if I hit long grades that feel like flat ground. With some work, and not really that much money, they run strong but stock; turds.
 
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