5.0 vs 3.5 - more reliable when driven hard?

[JExpedition07]

Now imagine, you've got nearly 170% the HP and 200% the torque to the tires and you get what my PB does. Even locking the rear end, the tires have no chance. And the sound from the engine is rather quiet. It just pulls and pulls, not much sound though.

Your PB puts 780 lb ft to the wheel? All premium 93 and E-85 wheel torque readings for the 5.0 range from 390-415 lb ft at the wheel. 200% is quite the claim. That’s more torque than a Raptor R and approaching 6.7L Powerstroke Diesel territory. If you don’t have upgraded H-Beam connecting rods and a beefier crankshaft that engine is not long for this world…

These are stock runs, differing octane besides the red line (tuned), all 5.0. Blue is 93 premium and red is E-85. 880 lb ft at the rear wheel would be 200% of the E-85 run

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[fmdog44]

Here's the question though....when you put it into sport mode, do you also put it back into 2wd, AND turn traction control off? Please do so if you have not and let me know what you think.

Mine is a 2WD No I don't turn traction control off.

 

[fmdog44]

75 Years young!

so true!!

 

[boo radley]

5.0 with a chain driven oil pump and timing.

3.5 while fast, bear in mind that the turbos generate the power and they will fail.

 

[HammaMan]

Your PB puts 780 lb ft to the wheel? All premium 93 and E-85 wheel torque readings for the 5.0 range from 390-415 lb ft at the wheel. 200% is quite the claim. That’s more torque than a Raptor R and approaching 6.7L Powerstroke Diesel territory. If you don’t have upgraded H-Beam connecting rods and a beefier crankshaft that engine is not long for this world…windowed block incoming.

My base 93 tune bests the R by 70ftlbs at the wheels. Have to deal with some family health issues, hope to hit the rollers soon. Still working on the 1/2 shift, debating about dropping the trans and changing clutches before they burn up.

 

[JExpedition07]

5.0 with a chain driven oil pump and timing.

3.5 while fast, bear in mind that the turbos generate the power and they will fail.

Kevlar belt driven oil pump**

 

[JExpedition07]

My base 93 tune bests the R by 70ftlbs at the wheels. Have to deal with some family health issues, hope to hit the rollers soon. Still working on the 1/2 shift, debating about dropping the trans and changing clutches before they burn up.

I’d be most worried about the stock rods at those torque levels, stock F-150 EcoBoost rods are pretty wimpy, same part # that’s used on N/A Duratec actually. Guys do supercharge the 5.0 stock, but I’d be dropping in the GT-500 rods and getting crank rebalanced if I ever do that. They are plug and play parts and cheap insurance.

 

[HammaMan]

I’d be most worried about the stock rods at those torque levels, stock F-150 EB rods are pretty wimpy, same part # that’s used on N/A Duratec actually. Guys do supercharge the 5.0 stock, but I’d be dropping in the GT-500 rods and getting crank rebalanced if I ever do that. They are plug and play parts and cheap insurance.

Remember, there's a 47hp / 100ftlb torque electric motor sitting between my flex plate and the torque converter. I've also got consistent reliable access to cheap 93 e0 to blend with e85 (e80) for some potent 97 octane e30 fuel.

 

[JExpedition07]

The gen 4 rods are damn close to GT500 spec. I wouldn't be concerned with anything in the bottom end of this engine up to 1,000HP.

There is a big difference between the F-150 rod and a GT-500 rod. The 4th gen 5.0 rod is close to the Boss 302 rod. That’s a good design for high sustained rpm runs, but the GT-500 are genuine forged with a huge shoulder. Much better for longevity with big boost #’s. Ours and the Boss 302 are sinter forged. There’s a difference. I wouldn’t run ours much past 750 horsepower if I wanted the motor to last.

 

[HammaMan]

47 whole hp? wow!
(My dirtbike puts out more than that)

It's a potent little boost. It's got 100ftlb of torque at idle, plus a 3.5 that's putting out over 500 and ~600tq.

My last trip to the mountains on gravel roads -- 2wd was unusable unlocked, with the locker on a little bit more so but I couldn't keep it from spinning having to bring in 4wd in 'normal' mode. Didn't try eco to see if the throttle remap would make it more manageable.

 

[HammaMan]

I wanted one. At least I thought I did.. Not so much anymore.

PB is still the best motor option. Being a little power plant on its own is just a huge bonus

 

[PowerBoostSoCal]

I've had 2 3.5EB - change the oil at 5K, use full synthetic - no problems with anything (about 200K miles each). I drive moderately and mostly for fuel economy only - they go like crazy when needed. If worried get an extended warranty - the best thing about the turbos, they adjust to weather, altitude and fuel grade and seem to deliver no matter what. With anything, give it some care and it will deliver.

 

[huhner5]

If Ford made a turbo V8 all of the 5.0 guys would jump ship and then claim that turbos are a good thing

 

[JExpedition07]

If Ford made a turbo V8 all of the 5.0 guys would jump ship and then claim that turbos are a good thing

Absolutely not. Nothing like naturally aspirated power and cubic inches, or in the case of the 5.0 small block displacement mixed in with the latest engineering advances. In todays world where literally everything is turbocharged I love being unique and having 8 cylinders. I also love the power that holds on until redline where 90% of todays cars fall off a cliff after 3,500 rpm.

 

[HammaMan]

If Ford made a turbo V8 all of the 5.0 guys would jump ship and then claim that turbos are a good thing

I don't think anyone is going to argue against TTs. They try to make up the difference with blowers, but turbos have but one challenger and that's electrons.

Absolutely not. Nothing like naturally aspirated power and cubic inches, or in the case of the 5.0 small block displacement mixed in with the latest engineering advances. In todays world where literally everything is turbocharged I love being unique and having 8 cylinders. I also love the power that holds on until redline where 90% of todays cars fall off a cliff after 3,500 rpm.

Now that's some copium. Turbos are just starting their first cup of coffee at 3500 RPM.

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