You can't just install those injectors and expect to get those kind of numbers. Lets say we both go with a drop-in turbo, choice of exhaust and intake. Then custom tuning. Which would have the most HP, keeping everything else stock?

 

yes, that is with supporting mods. but getting an additional 125-150hp isnt going to require us to get a different hpop. once you start talking 200-300hp or more, then yeah. but once you start talking that much hp the SD is going to have to start looking for a bigger turbo and stronger rods. like ones from an OBS...... but take an OBS and a SD and give them stage 1's, exhaust, and something like a tw chip and the OBS is going to make more power every time.

 

the OBS would still make more hp even with all that. with stage 1's we can get 140 more hp and you can get 50 more hp. no matter what size turbo or chip or exhaust you get the injectors are going to be what limits your power. so basically you can put a twin turbo, 5" exhaust and a chip rated at 200hp on your SD but if your injectors are only capable of supporting an additional 50 hp then all those mods are only going to get you 50 hp.

if you leave the injectors stock and just change the turbo and put a chip in it then yeah the SD will make more power. no one is denying that. yours comes with better stock injectors than ours. thats a fact. but once we both put in stage 1's that all changes and it doesnt matter what they came with stock. at the end of the day, just comparing the engine itself, we have the same bore, stroke, pistons, cam, heads, etc. yours just comes with better injectors and tuning.

 

So, with my injectors, I should get 250 + 120 = 370 Hp at the crank. Well I am right at 400 RWHP with my mods. There must be something wrong with adding the numbers like that.

OH, I do have forged rods.

 

notice i said "some" of you dont have forged rods. but in stock form, ALL of us have better turbos. and no, those numbers arent exact, but they are pretty close. either way, both trucks are great and have their advantages and disadvantages. as long as its a ford 7.3 i wont argue with it. if you read my sig, i own both a SD and an OBS. so i must not hate the SD too badly. that being said, youll never see me buy anything with a 6.0, 6.4, 6.8 or another 5.4.........7.3 SD is fine with me though.

 

I agree, 7.3 only. . You do have lots of nice vehicles.

 

thanks. i have a few more id like to add to the collection but im running out of room to put them lol. we have a city law that says you cant have more than 2 cars parked on grass, so i had to add a second driveway to serve as my parking lot.

the main point of my obs vs sd post wasnt just 7.3 vs 7.3, but the entire platform in general. as a whole the sd has just had way more problems than the obs. one thing i hate about the new cars/trucks is you cant order them the way you want them. if you want a sunroof you have to get the satellite radio, if you want a 4x4 it only comes in an auto, if you want this color you have to get it with these wheels, etc. everything is grouped into a package and they are generally always completely unrelated.

 

I don't know about ordering a new truck. I bought my truck on 9-2000 and have been very happy with it. I will keep my truck till either it or I die. . I do know what you mean about the 6.0 and up SD.

 

phillips91.... NO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
i'm sorry but a lot of what you've made about injectors and power between SD and OBS trucks is just plain wrong.... the ONLY reason an OBS would outrun an SD if they both had the exact same mods is because the OBS has a larger turbo, and is lighter... the OBS has more disadvantages than advantages in the engine department after that... late 99-03 SD's have 17* HPOP, intercooler, higher voltage IDM, better fuel system etc... all the OBS has is a weight advantage and a bigger turbo.. but not intercooler... only a 15* HPOP... lower voltage IDM (doesn't really make a huge difference, only in response mainly..), and a crappy fuel system....
also your "math" with injectors is VERY far off............................................... ...... ricer math is not allowed on the 7.3 forums stage 1s on an otherwise stock truck (with intake, exhaust, tuning, intercooler and stock turbo) will make probably about 310hp on an OBS and probably 315 on the SD because of the bigger HPOP... with equal HPOPs the OBS will make more because of the bigger turbo....
and miller_feed, with your truck you SHOULD be at around 415ish, ever dynoed or taken your truck to the strip? you have almost the same set-up as mine (but a heavier truck )

 

if my math is wrong someone needs to tell the people that sell injectors that their math is wrong too......because every page ive looked at has had the same numbers.

my point about the engines being the same is about the actual engine itself. not all the add ons like turbos, hpops, intercoolers, intakes, injectors, etc. structurally the engines are the same, so at the end of the day you can get the exact same power out of each of them. i can change the hpop, the sd can change the turbo, i can add an intercooler, the sd can add forged rods, etc. that once you start modding an engine it doesnt matter which one came from the factory with more power. and that putting the exact same part on a sd is not going to get you the exact same performance gains as it would on an obs. something that gives us 80 hp may only give the sd 50 hp.

 

for a real world analogy of what im trying to get across ill use one of my friends as an example. he has a 95 f150 with the 5.8 in it. he wanted to build the engine and put a bigger cam in it, carb, intake, pistons, aluminum heads, etc. whole 9 yards, rebuild it from the ground up. he bought a wrecked lightning so he could get the engine out of it. i asked him why he didnt just build the engine that was already in his truck and he said that because the lightning came with 40 more hp from the factory that it would have 40 more hp with those same mods than his trucks original engine could make. what made the lightning have more power was the intake and heads, which he was changing anyways. ive heard that logic many times when comparing the sd to the obs.

 

that's not what i'm saying at all, i was referring to how you claimed that the OBS will make more power than an SD with the same BASIC mods,you basically were talking about injectors, which is just plain wrong... and lots of the big-hp guys do actually say that the SD blocks have more cracks in them compared to the OBS... IH started cheaping out with the SD in the engine department.. same reason they switched to PMRs over forged... they're cheaper!

 

when im talking about supporting mods, or basic mods, that includes stuff like hpop, injectors, intakes, etc. things that i can do without pulling the engine or having to fabricate a lot of stuff. if i did nothing but put in a set of stage 1's, a chip and change my hpop would i not make more power than a sd with stage 1's and a chip since i have a bigger turbo? we would have the same injectors, same hpop and be very similarly matched trucks. the only difference would be the turbo.

and you apparently missed my point about injectors too. what i was saying is that just because you can get 125 hp out of a set of stage 1's on an obs does not mean that you will get 125 extra hp out of the sd by adding those same injectors. the sd already comes from the factory with more "supporting mods" than mine has, so it will see less gains out of each additional mod done to it. if you take a truck with a 15 degree hpop and put a set of stage 2's and a 20 degree hpop on it will you not see more of an improvement than you would with taking a truck with a 17 degree hpop and putting a set of stage 2's and a 20 degree hpop on it? the total improvement over the starting point will be different, but the end result will be the same. am i wrong here?

 

There is a guy that comes to my store, he has a Dodge with the big exhaust, Banks, Bullydog stickers. I asked how much power he is running, he said, close to 500 HP. I asked if he dynoed it and he said, no. I asked him how does he know it's putting out that much power. Yes, he told me the banks exhaust is XXX HP, the cold air intake it XXX HP, he had some kind of intake tube that Banks says is XXX HP. Then the chip is XXX HP, this guy knew every number that the company put in the mags as far as HP that the part will encrease to. I told him to add a few more HP for the stickers. lol

 

ive got a friend that just sold his 2002 or 2003 dodge and he had nothing but 5" exhaust and a chip and he was putting out those kinds of numbers. i dont remember the numbers exactly, but it was about 500 hp and close to 800lbs of torque. and yes, he had it on the dyno. he was running an edge programmer. he called it "the juice" or something like that. you can do wonders with a dodge with nothing more than a chip. so i wouldnt laugh too hard at that guy you know until you know hes not running that kind of power......