Tranny swap?
Posting Guru
Joined: Feb 2007
Posts: 1,996
Likes: 9
From: Pittsburgh,Pa.
Sugardaddy, you'll have to find a trans tunnel ( hump ) from a 4 speed truck. The tunnel in 4 speed and C6 equipped trucks is taller to allow for the additional height a larger trans. It's also removable where as trucks that came with 3 speed, MX or C4 transmissions are not. The cab floors in all of these trucks are stamped with the outline of the taller tunnel no matter what trans they originally came with. You can also use a tunnel from a 73 - 79 truck or cut a hole in one from a C6 truck.
Super Moderator
Joined: Apr 2004
Posts: 34,491
Likes: 2,806
In cars, they can be a direct swap. Since the 303 in trucks might vary a bit from the car model, you'll need to check input shaft length and spline, overall length, output spline, and mount position.
More info here.
David Kee Toploader Transmissions, Inc.
Check out ID charts, including "toploader imposters". These are 4 speed OD transmissions that look just like a performance trans. Beware, they are geared a bit worse than the 303 for 2nd to 3rd, 4th is OD, and they are not terribly strong, especially 4th gear.
Be sure to get the wide ratio--a 2.32 first gear is a bit tall in a truck although you might like it.....
Thread Starter
|
New User
Joined: Mar 2009
Posts: 3
Likes: 0
Thanks
Sounds like more than I want to deal with. This truck is a weekender maybe 2000 miles a year kinda truck. I guess the 3 speed ain't so bad!
Trending Topics
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Sugardaddy, you'll have to find a trans tunnel ( hump ) from a 4 speed truck. The tunnel in 4 speed and C6 equipped trucks is taller to allow for the additional height a larger trans. It's also removable where as trucks that came with 3 speed, MX or C4 transmissions are not. The cab floors in all of these trucks are stamped with the outline of the taller tunnel no matter what trans they originally came with. You can also use a tunnel from a 73 - 79 truck or cut a hole in one from a C6 truck.
sugardaddy601 In real time all the 4spd is going to do is give you 1 more gear to change before you get to high gear. Both are 1 to 1 output trannys.
John
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
Posting Guru
Joined: Feb 2007
Posts: 1,996
Likes: 9
From: Pittsburgh,Pa.
Yeah John I've seen a couple that were transplanted. Some C6's that were used behind 300, 302, 351 and 460 engines have stiffener ribs cast into the top of the case. I'm not sure if they would clear a stock floor pan.