Will 4.30 Gears Be enough???
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Will 4.30 Gears Be enough???
I am looking into ordering a F350 Crew Cab Short box SRW 4x4 with the 4.30 LS. My plan is to install a 6" lift and 37's. Would the 4.30 gears be enough? I do not haul or pull anything other than my quad, but still want usable power.
Thanks
Nebraska
Thanks
Nebraska
Sit. Stay.
Joined: Oct 2001
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From: Washington State
I think you may actually return WORSE mileage with the 4.30s and 37s. (Just my opinion)
I can see you using the gas MORE to get up to speed. Sure you'll get better mileage on the highway due to the 300 less RPMs you'll be turning versus stock BUT the slighest incline or desire to speed up will drop you into 3rd (even 2nd) so I cannot see any real mileage benefits.
Maybe you should consider smaller tires? I know, that's a tough one because these trucks look real purty with 6" of lift and 37s.
Just look at this Excursion with 18's and 37's.
Maybe drop him a note asking how his PSD (w/3.73s) handles the 37s.
Eddieelliot438
I can see you using the gas MORE to get up to speed. Sure you'll get better mileage on the highway due to the 300 less RPMs you'll be turning versus stock BUT the slighest incline or desire to speed up will drop you into 3rd (even 2nd) so I cannot see any real mileage benefits.
Maybe you should consider smaller tires? I know, that's a tough one because these trucks look real purty with 6" of lift and 37s.
Just look at this Excursion with 18's and 37's.
Maybe drop him a note asking how his PSD (w/3.73s) handles the 37s.
Eddieelliot438
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From: Sweet Home Alabama
I have 3.73s and 35s and plenty of power. I would think 37s and 4.30 would be similar if not better than my situation. I have not pulled more than 4000 lbs. If I did, I would change something. I barely lost any mileage. Just got 13.9 on a litle run averaging 72-75. Verry happy.
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From: Sweet Home Alabama
Nice to hear the V10 can move 38s with 3.73. I figured I would change the gears if I went to 37s or 38s. Now I am closer to a supercharger than gears.
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From: Phenix City, AL
Get bigger gears. No if, and's, or but's. Big tires need new gears.
I run the 36's and had 3.73's, the truck was suckin' with that setup. Now it has 4.56's and I'm still thinking I should have gone 4.88's.
Of course, you can always let your tranny cope with the added stress.
I run the 36's and had 3.73's, the truck was suckin' with that setup. Now it has 4.56's and I'm still thinking I should have gone 4.88's.
Of course, you can always let your tranny cope with the added stress.
Its Comin Right for us!
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From: GA
Originally Posted by Monsta
Rpms at 60 in OD
4.30 w/31.6's (stock) = 1976
4.30 w/37s = 1688
Personally I'd say no.
4.56 w/37s = 1790
5.13 w/37s = 2014 <-------- My pick.
4.30 w/31.6's (stock) = 1976
4.30 w/37s = 1688
Personally I'd say no.
4.56 w/37s = 1790
5.13 w/37s = 2014 <-------- My pick.
1709rpm@60 in od
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