4.56 Gear Question
All Star
Joined: Jan 2005
Posts: 852
Likes: 4
From: EULESS TEXAS DFW
RE: 4.56 Gear Question
1) When you have a vehicle that weighs 6000+ lbs, and try moving it with a 3.55 gear It take more effort (FUEL) from the engine... You can move the same weight with less effort with the 4.56's.
2) 4.56 x .67 = 3.05... this is your overall rear gear.... NOT BAD... This is a HIGHWAY combo afterall!
3) You have 30"+ tall tires and a .67 overdrive... back untill late 80's the best you had was 26" tall tires and 1:1 transmission ratio which gives you a 4.56 gear..... This is where 4.56's would KILL YOU! BUT by adding the 30's and .67 OD you get that 3.05 gear ratio for teh HIGHWAY and the 4.56 GRUNT of the line for towing and just getting your FAT @$$ truck moving with less effort.
In the end the 4.56's work for the 3rd Gen RAM because of the 30" tall tires and that .75 (2002) / .67 (2003-2006) overdrive.
Again ... DONT FEAR THE GEAR!
SPEED SAFE, AIR RAM
Professional
Joined: Oct 2005
Posts: 179
Likes: 1
From:
RE: 4.56 Gear Question
ORIGINAL: AIR RAM
1) When you have a vehicle that weighs 6000+ lbs, and try moving it with a 3.55 gear It take more effort (FUEL) from the engine... You can move the same weight with less effort with the 4.56's.
2) 4.56 x .67 = 3.05... this is your overall rear gear.... NOT BAD... This is a HIGHWAY combo afterall!
3) You have 30"+ tall tires and a .67 overdrive... back untill late 80's the best you had was 26" tall tires and 1:1 transmission ratio which gives you a 4.56 gear..... This is where 4.56's would KILL YOU! BUT by adding the 30's and .67 OD you get that 3.05 gear ratio for teh HIGHWAY and the 4.56 GRUNT of the line for towing and just getting your FAT @$$ truck moving with less effort.
In the end the 4.56's work for the 3rd Gen RAM because of the 30" tall tires and that .75 (2002) / .67 (2003-2006) overdrive.
Again ... DONT FEAR THE GEAR!
SPEED SAFE, AIR RAM
1) When you have a vehicle that weighs 6000+ lbs, and try moving it with a 3.55 gear It take more effort (FUEL) from the engine... You can move the same weight with less effort with the 4.56's.
2) 4.56 x .67 = 3.05... this is your overall rear gear.... NOT BAD... This is a HIGHWAY combo afterall!
3) You have 30"+ tall tires and a .67 overdrive... back untill late 80's the best you had was 26" tall tires and 1:1 transmission ratio which gives you a 4.56 gear..... This is where 4.56's would KILL YOU! BUT by adding the 30's and .67 OD you get that 3.05 gear ratio for teh HIGHWAY and the 4.56 GRUNT of the line for towing and just getting your FAT @$$ truck moving with less effort.
In the end the 4.56's work for the 3rd Gen RAM because of the 30" tall tires and that .75 (2002) / .67 (2003-2006) overdrive.
Again ... DONT FEAR THE GEAR!
SPEED SAFE, AIR RAM
Veteran
Joined: Oct 2003
Posts: 406
Likes: 0
From: NW Florida
RE: 4.56 Gear Question
ORIGINAL: tamuccmike
realllllll dumb question...the 4.56's is the rear axel...or tranny? thanks
realllllll dumb question...the 4.56's is the rear axel...or tranny? thanks
