4.88 or 5.38??

[mferguson28]

I'm making an engine swap, my old engine was an 22RE and i was running 4.88 R&P set with it. Now i have in a my hands 2 sets of R&P 5.38 for my front diff (DANA 44) and 5.29 for my rear diff (Toyota 8")

Running a 5VZ-FE is better to keep my 4.88's or change for the new sets??

 

[cruiser88]

Not sure if the transfer case would bind with two diffrent gear ratio's?

 

[mferguson28]

te difference bettwen one and the other is 1.6% the maximun acceptable is 2.0%

 

[inkpot]

te difference bettwen one and the other is 1.6% the maximun acceptable is 2.0%

Howdy! I always thought that the lower gear set (bigger number) should go in the front, since the front travels a longer distance while making turns. Tire size, rig setup, and driving styles might all influence whether you should stay with the 4.88's. John

 

[mferguson28]

Thanks, now i'm running 35's SS LTB, but i'm planning to go to SS TSL 38's

 

[WarDamnEagle]

Not sure if the transfer case would bind with two diffrent gear ratio's?

Not if you keep it in 2H (or Neutral)!

It might work but I wouldn't do it. Not that I'm an expert on the subject...I'm just anal retentive that way.

 

[toy4xfun]

i do not think i would either. but i think some ford broncos came from the factory like that they had a warning not to engage 4wheel drive on hard surface roads.

 

[inkpot]

Thanks, now i'm running 35's SS LTB, but i'm planning to go to SS TSL 38's

Howdy! I'm running 5.29's over 35's on my mini truck now, withe a 22re. My speedo is about 10% lower than actual speed. Cruising on the freeway means running between 3000-3500 rpm to keep up in the left lane. If your going to drive a lot of mud at WOT, I would probably stay with the 488's. The bigger engine should be able to keep them spinning. But if you are going to crawl a log of bedrock, then go with the lower gears. John