Possible motor swap

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Oct 30, 2009 | 06:46 PM

thunderguzzler

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From: Ballston Spa NY

Possible motor swap

Well to get started I have a 1996 F-350 XLT, 4x4, 5.8l, manual tranny, reg cab, with 205,000 mi on her. The motor needs alot of work. Both exh. manifolds and studs into heads, oil pan, rear crank seal, and driver side head(burnt valve? smokes under load or when engine braking) and no power any more. It has been hard to find another 351 to drop in, but I have a relitivly fresh 30k mi 302 in a 1993 bronco w/manual that would bolt right in. I don't do alot of hauling, just fire wood and snowmobiles in the winter(2000lbs). What would be the pros and cons? Possible? BTW what intake manifold is better, the high truck one or the lower one in the cars? Thanks Chad

Oct 30, 2009 | 07:40 PM

wolfsmurf

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only things i can think of as far as cons go is less cubic inches,youve already mentioned the intake, if you have stock exhaust your Y pipe will have to be modded. everything else is identical on both engines.

Oct 30, 2009 | 08:17 PM

thunderguzzler

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I did do a little research and found that I would be only losing 5 hp, 210 to 205, and my torque will go from 325 to 275. That is new specs though. My other question is what were the differences between the taller and shorter upper pleniums?

Oct 30, 2009 | 08:20 PM

wolfsmurf

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not sure about the plenums other than people around here always want the explorer intakes and heads. i know theres something special about them but cant tell you what it is.

Oct 30, 2009 | 09:38 PM

Conanski

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No the published specs don't tell the whole story, the 5.8 is close to 100ft/lb stronger than the 5.0 below 2000rpm. That said if the truck has gearing(4.10) then the 5.0 will be sufficient, use the HO intake for a broader powerband than the truck intake.

Oct 31, 2009 | 08:47 AM

thunderguzzler

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I'm not sure as to the gearing, but I do know that it is stock, with 5 speed. What is the weight difference between a 4x4 f150 and a 4x4 f350?

Oct 31, 2009 | 09:23 AM

Conanski

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Check the drivers door pillar for the axle code and go here.. Ford Axle Code Chart .: Articles

An F150 reg cab 4x4 weighs around 4500lbs, an F350 version is about 500lbs more.