New to PSD with question
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Freshman User
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New to PSD with question
I just bought my first PSD. It is a 2002 F250 Crew Cab 7.3L Turbo Lariat with a 8" lift and 36" tires. It has the 373 gearing. Is it ok to run this size tires without worry of rear end or tranny damage? Should I change gearing to compensate? Also, what kind of gas mileage should I expect to see? This being my first diesel, is there anything that you can recommend on maintenance?
I do not have anything to tow as of now but I plan on picking up a smaller travel trailer and another boat in the future.
Thanks..
I do not have anything to tow as of now but I plan on picking up a smaller travel trailer and another boat in the future.
Thanks..
Elder User
Joined: Dec 2003
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From: Kokomo
The rear temp is going to be a little higher, but not that big of deal, the tranny on the other hand is going to get abused, really has to burn up the first gear clutch packs to get going, temps are going to be high, a re-gear is a good $1400+ so do what you have to do, I would keep the trans fluid changed and maybe do a Sonnax valve kit or something like it, just to keeo the temps down a little and ge a little longer life, milage wise I would guess your best would be 16 would be your best, take those tires off and maybe you could see 20, something tells me you will stick with the 16mpg...
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Joined: Dec 2001
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From: Medford USA!
If the speedometer has not been re-calibrated, your mpg will be off due to false odometer readings. (You will actually be getting better mileage than indicated). Mileage in that truck with 35" should be 14-17 mpg.
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Originally Posted by SMiller
The rear temp is going to be a little higher, but not that big of deal, the tranny on the other hand is going to get abused, really has to burn up the first gear clutch packs to get going, temps are going to be high, a re-gear is a good $1400+ so do what you have to do, I would keep the trans fluid changed and maybe do a Sonnax valve kit or something like it, just to keeo the temps down a little and ge a little longer life, milage wise I would guess your best would be 16 would be your best, take those tires off and maybe you could see 20, something tells me you will stick with the 16mpg...
Waht does the sonnax valve kit do?
Elder User
Joined: Dec 2003
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From: Kokomo
Do a search, it raises the line pressure, holding the clutch packs a little tighter, the springs make the shift happen faster, keeping heat off the clutch packs, so just lowers the tranny temp and helps the tranny last a little longer. Most people like it because it makes the truck shift firm like it should.
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sa_rains
1999 - 2003 7.3L Power Stroke Diesel
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Jun 27, 2006 03:26 PM
