CK5
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best tranny
- Thread starter geeman
- Start date
Jason4x4
1/2 ton status
If you are staying with an automatic, stay with the 700r4, lower first gear and overdrive.
yeah, keep the 700r4. If you are worried about it, you can get em built up a bit. Th350s are a bit stronger, but not enough to warrant changing em out, in my opinion
keep what you have, you will never regret that overdrive.
this is an eternal question that has been asked a lot! There really is no right or wrong answer, more of a preference really. Since my truck sees a lot of highway miles going to and from trails I kept the stock 4.10 gearing. With 37in tires this puts me short of 3000rpm at 60mph. I do not have overdrive and the engine seems pretty happy cruising at this rpm. I can tell you that when the day comes that this truck becomes a truggy that 5.13's or higher will fill both diffs because the crawl ratio will become much more important than the MPG.
General idea is to get your rpms around 2000 - 2400 at 60 mph. Unfortunately, without overdrive that can make your truck a real slug off the line... You'd be able to get away with 4.56, but I'd reccomend the step up to 4.88 or 5.13
ive got a deep overdrive, run 5.13s. i ran 5.13s with 39.5's and i loved it with 700r4
if you plan on driving on the street: keep the th700.
when your rig becomes offroad-only: th400.
OD is cool to have on the highway, but really isn't worth jack offroad... and the th400 is much more durable.
j
when your rig becomes offroad-only: th400.
OD is cool to have on the highway, but really isn't worth jack offroad... and the th400 is much more durable.
j
resurrected_jimmy
1/2 ton status
geeman said:
4.88's if your on 1/2 ton axles
resurrected_jimmy
1/2 ton status
have to do both diffs. Not changing gears in the front = broken parts
