People always bashing on the 7.3
#41
04-29-2012, 09:44 AM
Diesel Enthusiast
So much fail in MY post? On the contrary, my friend.
First of all. A 95 12v is only pushing 160hp stock.. To the CRANK. That comes out to about 127whp. No, a little more fuel and a few more rpms aren't going to give you over 250crank hp
On a side note, I've seen some 12v trucks, including a 95, with even INJECTORS that didn't touch one number higher than 330hp on a dyno. A 7.3 with a good tune, exhaust/dp, and intake will be right about 300whp. Stage 1 injectors is right about 360whp. Stage II injectors is right about 400-420whp.
Second, focus more on reading comprehension than 'failing' somebodies post. I said mod for mod, not dollar for dollar.
As far as mileage, my BONE stock 7.3, cat and all, with a 6" lift and 33" cooper stt tires would get 16-18mpg city driving. If I was on the farm, my truck would get 15-16mpg with lots od idling. Now with 35" tires but exhaust/dp/intake, I typically get 16mpg city but 22ish on the highway. Once I get my truck tuned and get a swamps idm, I'll be closer to 18-19mpg city.
As far as a 300hp beating a 400hp cummins, it happnes. The reason is because a cummins is a i6 motor, designed to have lots of OFF IDLE tq. Whereas a powerstroke, that's a v8, doesn't have as much nut off the line,but you can rev them and they keep on making power.
What does this mean? This means that in order for a 6cyl cummins to keep a set load moving up a hill, he needs to keep downshifting to stay in the dinky powerband (read: very low rpm's). Whereas a powerstroke can stay in gear because hi-rpm's is where these trucks make power.
We also have the talk of egt's. 12v cummins start cooking up egt's veryyy easily. I've read of guys with fuel mods maxing out egt's UNLOADED when messing around. Read thee forums and you'll see moit guys with modded 7.3s won't max out egt's even while towing.
First of all. A 95 12v is only pushing 160hp stock.. To the CRANK. That comes out to about 127whp. No, a little more fuel and a few more rpms aren't going to give you over 250crank hp
On a side note, I've seen some 12v trucks, including a 95, with even INJECTORS that didn't touch one number higher than 330hp on a dyno. A 7.3 with a good tune, exhaust/dp, and intake will be right about 300whp. Stage 1 injectors is right about 360whp. Stage II injectors is right about 400-420whp. Second, focus more on reading comprehension than 'failing' somebodies post. I said mod for mod, not dollar for dollar.
As far as mileage, my BONE stock 7.3, cat and all, with a 6" lift and 33" cooper stt tires would get 16-18mpg city driving. If I was on the farm, my truck would get 15-16mpg with lots od idling. Now with 35" tires but exhaust/dp/intake, I typically get 16mpg city but 22ish on the highway. Once I get my truck tuned and get a swamps idm, I'll be closer to 18-19mpg city.
As far as a 300hp beating a 400hp cummins, it happnes. The reason is because a cummins is a i6 motor, designed to have lots of OFF IDLE tq. Whereas a powerstroke, that's a v8, doesn't have as much nut off the line,but you can rev them and they keep on making power.
What does this mean? This means that in order for a 6cyl cummins to keep a set load moving up a hill, he needs to keep downshifting to stay in the dinky powerband (read: very low rpm's). Whereas a powerstroke can stay in gear because hi-rpm's is where these trucks make power.
We also have the talk of egt's. 12v cummins start cooking up egt's veryyy easily. I've read of guys with fuel mods maxing out egt's UNLOADED when messing around. Read thee forums and you'll see moit guys with modded 7.3s won't max out egt's even while towing.
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tiremann9669 (04-29-2012)
#43
04-29-2012, 11:25 AM
Diesel Bomber
My max torque is around 2400 RPM, powerstrokes are at 2800 RPM, both trucks can pull good, I dont see how 85 failed, unless your just tryin to be ignorant. Also though 85 powerstrokes do have a lil time for the egts to fall before they reach the turbo, as for cummins its just a factory of shovin air. From the intake to the exhaust.
#44
04-29-2012, 11:48 AM
My max torque is around 2400 RPM, powerstrokes are at 2800 RPM, both trucks can pull good, I dont see how 85 failed, unless your just tryin to be ignorant. Also though 85 powerstrokes do have a lil time for the egts to fall before they reach the turbo, as for cummins its just a factory of shovin air. From the intake to the exhaust.
But there's a few minor things wrong here. Typically a 12v cummins makes maximum torque at 1500-1600rpms.. this is GREAT for getting a heavy load moving. The downside is, they make maximum HORSEPOWER at 2500rpms. So this means actually maintaining speed, accelerating, or trying to go up any form of hills requires the truck being constantly downshifted in order to stay within the meek powerband.
A powerstroke typically makes maximum torque at 2000rpm... noticeably higher than the cummins. This isn't great for getting a load to move because you have to slip the clutch or the tranny in order to build boost to get the load moving. BUT, the powerstroke makes maximum horsepower about 3,000rpms. So this means you just keep your foot to the floor and let the high placed powerband of the powerstroke carry you through the hills and down the highway.
As far as EGT's, the 12v is just a primitive motor (not knocking it, just stating a fact) that doesnt have any form of computer control. There is SO MUCH to a 7.3powerstroke in terms of electronic control, that its ridiculously to control egt's, smoke, the various forms of timing, etc. 7.3's take a good minute in order to build egt's, whereas cummins get hot very quickly (which will also result in constant downshifting).
Last edited by 85_305; 04-29-2012 at 11:51 AM.
#45
04-29-2012, 11:58 AM
Diesel Enthusiast
I would say the only reason you like the 7.3 better is because you don't know how get power out of the 5.9!! Who cares what the egts are on a 5.9 they like heat your 7.3 don't it will melt!!
#46
04-29-2012, 12:02 PM
I had a 12v cummins, you dodo bird. And I sold it and went back to a powerstroke. My buddy with a fueled up 12v with a built auto likes my lifted 7.3 with ONLY an exhaust and intake more than his truck. He wants to sell his cummins and buy a new powerstroke he likes it so much.
#47
04-29-2012, 12:18 PM
Diesel Bomber
I dont care about EGTS, that why god let us invented pyrometers...
#48
04-29-2012, 12:46 PM
EGT's do matter.. because when they get too high, time to start backing off. That means instead of me going 50mpg up a grade with a load, the cummins is backing off down to 15-20mph so he doesn't toast the motor or turbo.
#49
04-29-2012, 01:14 PM
would you like to come out here and see the 95 cummins with stock injectors with a custom ground fuel plate and gov springs put 362hp to the rear wheels? when guys know how to tune a ppump you can add a lot of power. I have seen this first hand. But your all about a powerstroke and can't see past that. Yes I like the cummins over a 7.3 but I do believe a 7.3 is a good motor they live a long time but cost more to mod than a 12v. fyi the same 95 12v making 362hp beat a 97 stroke making the same power at the strip last night both guys are friends. where are you getting your hp numbers from on the powerstrokes mods you mentioned are you just adding up the advertised hp gains? a friend of mine has a 97 with S&B Intake, 4" MBRP Exhaust, Auto Meter Gauges, 6 Pos TS Chip, Swamps 230 Hybrid Injectors, Hypermax H2E Turbo, Adrenaline HPOP, Fass Pump it puts 344 to the rear wheels on the same dyno that the dodge put 362 down on. I have been around the dyno for the last 4 years and there is always a lot of heartbreak when guys think they are going to make a lot more than they did. The local shop I go to has a mobile dyno and I have been all over with them my vp truck hurt a lot of guys feelings at some events even. So if you don't believe me come out here and you can see first hand. I have first hand knowledge of what I speak about. I know the trucks I mentioned and have watched them get modified piece by piece.
---AutoMerged DoublePost---
ohh yeah as for your peak tq numbers try this link it states it's at 1600 rpm isn't that the same as a cummins???
7.3L Power Stroke Specs
oh and the cummins spec sheet too
5.9L Cummins 12v Specs
---AutoMerged DoublePost---
ohh yeah as for your peak tq numbers try this link it states it's at 1600 rpm isn't that the same as a cummins???
7.3L Power Stroke Specs
oh and the cummins spec sheet too
5.9L Cummins 12v Specs
Last edited by 01quadcab; 04-29-2012 at 01:14 PM. Reason: Automerged Doublepost
#50
04-29-2012, 01:30 PM
would you like to come out here and see the 95 cummins with stock injectors with a custom ground fuel plate and gov springs put 362hp to the rear wheels? when guys know how to tune a ppump you can add a lot of power. I have seen this first hand. But your all about a powerstroke and can't see past that. Yes I like the cummins over a 7.3 but I do believe a 7.3 is a good motor they live a long time but cost more to mod than a 12v. fyi the same 95 12v making 362hp beat a 97 stroke making the same power at the strip last night both guys are friends. where are you getting your hp numbers from on the powerstrokes mods you mentioned are you just adding up the advertised hp gains? a friend of mine has a 97 with S&B Intake, 4" MBRP Exhaust, Auto Meter Gauges, 6 Pos TS Chip, Swamps 230 Hybrid Injectors, Hypermax H2E Turbo, Adrenaline HPOP, Fass Pump it puts 344 to the rear wheels on the same dyno that the dodge put 362 down on. I have been around the dyno for the last 4 years and there is always a lot of heartbreak when guys think they are going to make a lot more than they did. The local shop I go to has a mobile dyno and I have been all over with them my vp truck hurt a lot of guys feelings at some events even. So if you don't believe me come out here and you can see first hand. I have first hand knowledge of what I speak about. I know the trucks I mentioned and have watched them get modified piece by piece.
---AutoMerged DoublePost---
ohh yeah as for your peak tq numbers try this link it states it's at 1600 rpm isn't that the same as a cummins???
7.3L Power Stroke Specs
oh and the cummins spec sheet too
5.9L Cummins 12v Specs
---AutoMerged DoublePost---
ohh yeah as for your peak tq numbers try this link it states it's at 1600 rpm isn't that the same as a cummins???
7.3L Power Stroke Specs
oh and the cummins spec sheet too
5.9L Cummins 12v Specs
Your right about my numbers for modded powerstrokes being off tho.. I did more research, and most 7.3's with stage ones are about 380whp. Stage 1.5 7.3's are about 420whp, stage II 7.3's are about 450ish whp, and the list goes one. Most guys with just tunes, injectors, intake exahust are about 380whp... this isn't including hpops, intercoolers etc. Do a search or check out powerstroke dot org... there's guys ALWAYS dynoing over there.
If that guy with a h2e and swamps hybrids is putting out less than 500whp, he's doing something VERY wrong. Sorry, but 500whp and 1000ft-lbs is commonly seen with hybrids and a h2e.
As far as the link for the powerstroke torque numbers, that includes ALL 7.3 powerstrokes, including the intercooled 2003's and the motors used in the heavy duty trucks. OBS powerstrokes have peak torque at 2,000rpms, namely due to the huge exhaust housing used to control egt's since they aren't intercooled. Putting a smaller exhaust housing such as a 1.0 or .84 will create boatloads of spool (aka torque) starting at 1500rpms... just like the cummins.
