gear Ratio ?
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Mountain Pass
Joined: May 2002
Posts: 190
Likes: 3
From: Southern California
gear Ratio ?
I am installing new gears in my 1997 F250 HD Crew Cab 4x4... I have a 460 under the hood with an AOD and will running 35in tires. I do not "Rock Crawl" but I do tow a ski boat or camper trailer. 80% of my driving time is on the freeway. I am stuck in my decision between 410s or 456s.
What does evryone think?
Thanx and Merry X Mass.
What does evryone think?
Thanx and Merry X Mass.
Postmaster
Joined: Dec 2002
Posts: 3,959
Likes: 9
From: USA
gear Ratio ?
Im kinda going through the same thing with my truck. I would imagine the 4.10's would be good for your truck since your big-block can pull taller gears and 35's arent too big of tires, but your overdrive trans can handle a lower gear too, so I guess you could have it iether way... For me it's a choice between 3.73 and 4.10. Since Im running a non-overdrive trans with 33" tires and a small-block, 4.56's were out of the question for me, too low. I think I've decided on 4.10's, Im willing to give up a little top end.
I dont know if that was really much help to you, just figured I'd throw that in as something to consider.
I dont know if that was really much help to you, just figured I'd throw that in as something to consider.
FTE Leadership Emeritus
Joined: Sep 2000
Posts: 7,298
Likes: 45
From: Southern California
gear Ratio ?
FWIW, I'd say go with 4.56 gears especially since you will be towing. With 35's that will give you 2850 rpm at 65 mph in 3rd gear. Calculating your OD gear at .80 reduction, you would have 2275 rpm in OD at 65 mph.
This might give you some more info to help make your decision: [link:www.4lo.com/|Gear/Tire Size Table]
YMMV
This might give you some more info to help make your decision: [link:www.4lo.com/|Gear/Tire Size Table]
YMMV
Elder User
Joined: Nov 2002
Posts: 526
Likes: 0
From: Spokane WA
gear Ratio ?
Don't you have a AODE or a E40D on your 97.GV
I have a 429 but I thought the AOD was for a small block or I would go for putting one on my 74 crew.
I have a 429 but I thought the AOD was for a small block or I would go for putting one on my 74 crew.
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Elder User
Joined: Nov 2002
Posts: 526
Likes: 0
From: Spokane WA
gear Ratio ?
Thought the e40d had a .67 OD.
And could I run it on a old (74) 429 truck? Just have to buy a after market electronic box?
Thx
GV
And could I run it on a old (74) 429 truck? Just have to buy a after market electronic box?
Thx
GV
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