engine choice 5.0 or 5.8
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Tuned
Joined: Aug 2009
Posts: 274
Likes: 4
From: British Columbia
engine choice 5.0 or 5.8
I'm looking for another truck one choice has a 5.8. Is there a signifigant difference in gas mileage between the 5.0 and the 5.8.
Which of the two engines would others choose? Looking for opinions and pro and con.
Which of the two engines would others choose? Looking for opinions and pro and con.
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
Unless you're just looking at a 2wd reg cab for a commuter get the 5.8, there ain't enough difference in fuel milage between the two motors to make it worth short changing yourself an a real truck engine.
FTE Legend
Joined: Aug 2004
Posts: 37,887
Likes: 20
From: North Central Rural Sask.
Ive experienced both, although one was a carbed 5.8. (1986 model truck)
The carbed 5.8 got terrible fuel mileage, and it was a ford factory reman engine.
I get much much better economy with my 302 truck. (2wd, 308 rear diff, 5 speed reg cab reg box) Reliability of the 351 we used to have was poor, hence the factor ford reman engine, and it left a poor taste in my mouth .
Real truck engines dont have spark plugs my friend
The carbed 5.8 got terrible fuel mileage, and it was a ford factory reman engine.
I get much much better economy with my 302 truck. (2wd, 308 rear diff, 5 speed reg cab reg box) Reliability of the 351 we used to have was poor, hence the factor ford reman engine, and it left a poor taste in my mouth .
Real truck engines dont have spark plugs my friend
Fleet Mechanic
Joined: Nov 2003
Posts: 1,500
Likes: 2
I agree...(at least for a 2wd application...stroke a 5.0, use the late 90's EFI heads, headers and plenty of air...1986 F250 circa)...put a ZF 5 speed in back of it and 3.73 gears. I can outpull both a 300 6 and 5.8 and I also get 22mpg(not bad for a speed density motor)...For heavier duty applications, I love my 7.5 stroker...the 5.8 is a good in between motor but the fuel milage sucks (Once again, just my opinion based on 20 years now of running EFI trucks, and carb is definately different...not to mention 4wd applications)>
Fleet Mechanic
Joined: Nov 2003
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Tuned
Joined: Aug 2009
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From: British Columbia
I'm looking at several different trucks, all 4x4s. I haul a small camper sometimes, but mostly local hunting, fishing trips.
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Tuned
Joined: May 2011
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5.0 I have owned several of both. Unless your hauling big trailers, the 5.0 will get you where you want to go.
Dont get me wrong the 351 is not a bad motor, But both of them ( EFI ) that i have owned got really poor fuel mileage compared to my 5.0 . All were automatics with overdrive so I am comparing apples to apples.
Dont get me wrong the 351 is not a bad motor, But both of them ( EFI ) that i have owned got really poor fuel mileage compared to my 5.0 . All were automatics with overdrive so I am comparing apples to apples.
