gear ratio advice
Thread Starter
|
Tuned
Joined: May 2009
Posts: 435
Likes: 1
gear ratio advice
I am putting a different axle under the front of my 76 f350, and of course I can't find one with the 4:10 gears like my rearend has. So I will have to change the gears in one of them. My question is, I wont be off roading or pulling extremely heavy loads, would I be better to keep the front as is and change the rear, or vise versa? The front axles I'm finding all have 3:55's (or around there). It will mostly be a daily driver, pulling occasional trailers. Just wondering what you guys have or what you would do
Thread Starter
|
Tuned
Joined: May 2009
Posts: 435
Likes: 1
Right now it has 33's, but when those are shot I will probably go with 35's. it came with 33's that were almost new. It has a 460 so it will probably be a gas guzzler no matter what. I'm not too worried about mpg's.
Fleet Mechanic
Joined: Feb 2007
Posts: 1,326
Likes: 48
From: Middle TN
With 35s and if its a 4speed I would lean to 4:10 to keep from slipping the clutch so much when pulling a trailer.
With an automatic you might be ok with 3:50s but rather have 3:75s
From 4:10 to 3:55 is a big jump.
With an automatic you might be ok with 3:50s but rather have 3:75s
From 4:10 to 3:55 is a big jump.
Thread Starter
|
Tuned
Joined: May 2009
Posts: 435
Likes: 1
Yea it's an automatic. I guess it will depend on what the front axle I find has. It seems like the ones I'm finding have either 3:55 or 3:75. I had a truck once that I put 4:10 in that had 3:55 and you ain't kiddin it was a big difference! It took a long time to get used to.
Post Fiend
Joined: Apr 2008
Posts: 8,261
Likes: 15
From: Big Sky Country
I concur with Bart, with 35's i'd try to keep the 4.10's, i wouldn't go any higher than 3.73's though, but personally i'd hold out for a 4.10 axle if it were my truck (you may have to look longer but they're out there) after all this is a F350 4x4 and you'll want to use it as a "working" truck on occasion so i'd go with the 4.10's.
Thread Starter
|
Tuned
Joined: May 2009
Posts: 435
Likes: 1
Trending Topics
Lead Driver
Joined: Apr 2008
Posts: 6,938
Likes: 13
Personally i would keep the 3.55's i have em in my truck with 33's and before the OD i still wanted taller gears. Now with 3.55's and OD im turnin 2k at 60ish. Once i get the 35's on it will be great. I have no issues towing or getting stuck between gears. Im considering 4.11's if i go to a 38" tire... depends on how the engine turns out when im done playin with it.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
Post Fiend
Joined: Apr 2008
Posts: 8,261
Likes: 15
From: Big Sky Country
4.10's w/35's @65mph will keep you under 2,600rpm's.
Thread Starter
|
Tuned
Joined: May 2009
Posts: 435
Likes: 1
Its a 76 f350 Super camper special that I'm restoring and I did a 4wd conversion to it. It actually wasn't a bad job but I'm having a hell of a time finding a front axle. I know a dana 60 would be the best under it but I'm not spending $1000 on a front axle, so a 44 will do just fine for me.
