Slow!!!
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Senior User
Joined: Nov 2013
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Slow!!!
So my 95 f350 5.8 regular cab dually just seems like a slug compared to my 95 f250 and it's only 1500 pounds more the truck is slow to get up to speed and slows down on hills and over drive is use less cuz it just struggles but it seems to be running fine it has new
Plugs
Ford racing wires
Msd cap and rotor
Fuel pressure regulator
O2 sensor
K&N drop in filter
Fuel filter
Truck has 4:10 gears and only codes in it are for the evr solenoid for the egr I've checked the egr is seated.I'm just about out of ideas iv checked fuel pressure tps voltage etc etc
Plugs
Ford racing wires
Msd cap and rotor
Fuel pressure regulator
O2 sensor
K&N drop in filter
Fuel filter
Truck has 4:10 gears and only codes in it are for the evr solenoid for the egr I've checked the egr is seated.I'm just about out of ideas iv checked fuel pressure tps voltage etc etc
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Senior User
Joined: Nov 2013
Posts: 195
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It is a code 558 and 332 inefficient egr flow pulled them with my good red brick snap on scanner so it tells me the code I'm not into counting flashes any more lol, but the evr is bad I bench tested it but I know that's not causing power loss like this my f250 I have the egr blocked off
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
Do you think your F250 would do any better with 1500lbs in the bed? An all stock 5.8 isn't enough motor for a 7000lb truck, so you need to either live with it, upgrade the 5.8, or replace it with a bigger motor.
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Senior User
Joined: Nov 2013
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Why would Ford stick such a under powered motor in a f350. I have a set of shorty headers for it I'm gonna remove the cat air pump etc.. and a set of 1.7 rockers I was thinking maybe mass air conversion maybe?
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
They put even more underpowered motors in the f150s because that's all they had at the time.. it's all everyone had. People have become spoiled with current vehicles, there was a time not long ago when every vehicle slowed down on big hills.
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Posting Guru
Joined: Sep 2013
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A very good point to consider, Many trucks an even old cars of vintage it was not uncommon to downshift or change a gear if you wanted to hold speed on a hill or you just slowed up and lived with it. These days we have trucks that pull 70 all day and people complain if they downshift even once on a steep grade without a load. I should know this struggle I drive a guttless four banger and a F-150 with a 5.0 of all engines in her.
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Postmaster
Joined: Nov 2011
Posts: 3,533
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From: SW Florida
"Only" 1500 lbs more? That's about 1.5 seconds off your quarter mile time!
It ain't gonna get much faster. I doubt you bought a 1 ton dually to go fast so just be reasonable with your expectations. You can always sell it and get one with a 460 if the 351 just don't do it for you. Or swap the 4.10's out for some 4.56's. Not sure what's available for that axle but I don't doubt you can find a better ratio.
It ain't gonna get much faster. I doubt you bought a 1 ton dually to go fast so just be reasonable with your expectations. You can always sell it and get one with a 460 if the 351 just don't do it for you. Or swap the 4.10's out for some 4.56's. Not sure what's available for that axle but I don't doubt you can find a better ratio.
Thread Starter
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Senior User
Joined: Nov 2013
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Headers
Air pump delete
Cat delete
1.7 rockers
Electric fans
High output coil(msd)
Just simple small mods that's all I can think of right now
Logistics Pro
Joined: Mar 2005
Posts: 4,698
Likes: 47
From: Mexico, Missouri
Headers and 1.7 roller rockers will open some more hp.
Need more? Next is a different cam, different heads...
More..? Then a stroker, tuning software or move up to a 460 and then if not enough, then stroke the 460!!!
As was mentioned earlier, only thing stopping the upgrades is how deep a person's pocket book goes....
Need more? Next is a different cam, different heads...
More..? Then a stroker, tuning software or move up to a 460 and then if not enough, then stroke the 460!!!
As was mentioned earlier, only thing stopping the upgrades is how deep a person's pocket book goes....
Thread Starter
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Senior User
Joined: Nov 2013
Posts: 195
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Headers and 1.7 roller rockers will open some more hp.
Need more? Next is a different cam, different heads...
More..? Then a stroker, tuning software or move up to a 460 and then if not enough, then stroke the 460!!!
As was mentioned earlier, only thing stopping the upgrades is how deep a person's pocket book goes....
Need more? Next is a different cam, different heads...
More..? Then a stroker, tuning software or move up to a 460 and then if not enough, then stroke the 460!!!
As was mentioned earlier, only thing stopping the upgrades is how deep a person's pocket book goes....
Laughing Gas
Joined: Jan 2008
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From: NC
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
Longtubes will produce the biggest torque gains with a smallish(2.5") single exhaust system behind it, that means the stock Y pipe and cats have to go. After that I'd suggest 1.7 rockers and GT40 heads or if you were to stumble across a great deal for a lightly used Vortec supercharger kit you could go that route because nothing boosts torque like forced induction and torque is what a heavy truck needs.