7.3 power improvement? - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 20 (permalink) Old 05-15-2010, 02:44 PM Thread Starter
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7.3 power improvement?

I think the 7.3 we have is rated at 250HP. I have know idea what the torque numbers are. I have two questions.

1-would upgrading it to 350 be a detriment to the drive line?

2-how would one achieve this increase.

Of course, maybe I should concern myself with torque improvements. This is a towing application after all.
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post #2 of 20 (permalink) Old 05-16-2010, 03:55 AM
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....upgrading the power will hurt the transmission..... quicker if its a heavy truck like crew cab, extended cab, 4x4 ....but 350hp wont hurt the transmission in a regular cab 2wd.....unless you are around every stop light.

1995 f250 2wd PSD, auto, DIY intake, DIY exhaust, PHP tuned 40hp tune , Hybrids injectors 238cc..... 13.618 in the 1/4 at 6000lbs.


1995 GMC 3500HD dump truck 6.5 turbo(lol) DIY intake and exhaust.


2008 GMC 2500 hd stock for now.EFI LIVE installed!!!!!
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post #3 of 20 (permalink) Old 05-16-2010, 12:02 PM Thread Starter
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Easy,

this is a f550 4x4 with a 12' landscaper body w/automatic, must weigh 8500-9000lbs...not sure.
It will have to pull skid/trailer combo of 12,500, or a chipper at 5,700lb.
It's hilly here, and I was looking for a boost just for the hills.
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post #4 of 20 (permalink) Old 05-16-2010, 06:50 PM
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what year is your truck? the upgrades to make that powwr will be differamnt depending on the year. i am assuming its a 2000-2003
if so a custom chip, exhaust, diy intake and a gtp38r turbo would probably get you close to that 350 mark but not quite there. add a set of stage one single shot injectors and it would be a mean towing machine

as for the tranny I really dont know I'm a stick guy, but hopefully some one else will chime in on that

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post #5 of 20 (permalink) Old 05-16-2010, 09:41 PM Thread Starter
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pontiac,

correct, it's a 2003.
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post #6 of 20 (permalink) Old 05-17-2010, 11:53 PM
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If you are stil using the stock size tires I would only upgrade the tranny fluid cooler. Replace it with one from and 05-06 superduty. I would also recommend getting a Banks TransCommand to firm up your tranny or a programmer that has tranny adjustment capabilities. I am running 37s on my truck and tow a 28 foot toy box with quads and bikes in it through the mountains and I have never had a problem with the tranny.
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post #7 of 20 (permalink) Old 05-18-2010, 03:00 AM Thread Starter
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Digger,

there the stock 19's.
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post #8 of 20 (permalink) Old 05-18-2010, 03:16 AM
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You can spend a ton of cash making it go a wee bit faster and maybe, just maybe making it a tad more fuel efficient.

open exhaust, open intake, custom efficiency tune, gauges, valve body (until the tranny decides to go for good, which it will with any power adders, and likely in short order).

Unless you're prepared to spend a lot of coin on this truck, do the things listed above and save your pennies for a built transmission.

Adding power to a 9,500 lb truck as a daily driver is a crapshoot, at best.

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post #9 of 20 (permalink) Old 05-18-2010, 05:29 AM
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Quote:
Originally Posted by plainredtruck View Post
You can spend a ton of cash making it go a wee bit faster and maybe, just maybe making it a tad more fuel efficient.

open exhaust, open intake, custom efficiency tune, gauges, valve body (until the tranny decides to go for good, which it will with any power adders, and likely in short order).

Unless you're prepared to spend a lot of coin on this truck, do the things listed above and save your pennies for a built transmission.

Adding power to a 9,500 lb truck as a daily driver is a crapshoot, at best.

prt


1995 f250 2wd PSD, auto, DIY intake, DIY exhaust, PHP tuned 40hp tune , Hybrids injectors 238cc..... 13.618 in the 1/4 at 6000lbs.


1995 GMC 3500HD dump truck 6.5 turbo(lol) DIY intake and exhaust.


2008 GMC 2500 hd stock for now.EFI LIVE installed!!!!!
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post #10 of 20 (permalink) Old 05-18-2010, 08:09 AM
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if it was me i would open up the exhaust and intake. get a chip from a good tuner like, swamps, beans, gearhead. then a good torque converter and BTS or JWs valve body. then you will need a set of stage 1s and maybe a turbo.

{95 F250 Powerstroke XLT} 5 spd, Wildman 6 pos. chip, custom IC, ADs, AFE stage 2 intake, 3" down pipe to custom 5in stack. EBPV break, shimed FPR, idm mod by mattymx, CCV mod, Leveling Kit, diprocol egt and boost guages.
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