Official Crawlbox BS thread!

@Littles - After talking to Marlin I started poking around for other options and I've been going back and forth with Davez for a few days now. Last we spoke they sounded confident they could source a coupler. I was quoted ~$1200 +shipping for a complete crawl box. I'll let you know if I hear anything else.

 

That's CHEAP but will it include the 4.7 crawl gear with both front and rear adapter?

 

I will definitely keep you posted. Let me know if you make progress with davez. I did call up advance adapters the other week and they had two of the adapters on the shelf for the atlas case @ $150 a piece and 10% restocking fee if it doesnt work. I didn't pull the trigger at the time but thinking about buying one just to see the fit and rule it in or out as an option. My expectation is that it will fit the trans tight but maybe not the tacobox input

 

He said "complete". They've got their crawl boxes listed for $499, complete t-case, crawl box, and triple shifters for $1250. Granted, they specialize in 88-95's but when I asked about later second gen stuff he sounded confident and knew what parts were needed. Said it was just a matter of finding the coupler and he'd let me know.

If you've got the taco box to test fit it on it wouldn't hurt. Hell I'll send $15 your way if it doesn't work out.

Might give them a call and order one just so I don't get stuck waiting for it to come out of back order. I've definitely wasted $30 on way shittier things.

 

D@mn. Consider 4.7 gear, front/rear adapter, and 23 spline input cost more then $1250. Might want to check to verify their crawl box have the 4.7 gear instead of the 2.28. If it's just 2.28, it'll be cheaper to buy a complete stock gear tcase and adapter.

Their 499 is for 2.28 case with a rf1a adapter.

Will be one hell of a deal for 1250 if everything is there for your taco

 

https://www.davezoffroadperformance.com/store/drivetrain/transfer-case/complete/crawl-box-1.html

That's the thing, it is 2.28. From what I've been reading, isn't it preferred to put less stress on the xfer case with the 2.28?

(https://www.tacomaworld.com/threads/official-crawlbox-bs-thread.422186/page-19#post-13933523)

I'm on the fence about swapping it over to 4.7 but if no one is having any real issues with it I know I would like it.

 

hmm, I wonder how slow a 2.28 can go, anyone got vids?

 

Math says it'd be 111.26:1 with 2.28 gears.
With 4.7 gears it'd be 229.73:1 which, I believe is around .4 mph isn't it?
I'm assuming it's safe to say it'd be +/- .8 mph.

Not trying to win any drag races over here though

 

haha...ain't this the truth! I just went ahead and ordered the advance adapters coupler...should be here next week.

 

quick question, anyone know when putting together a dual case does the 4.7 gears have to be in the back case or the front? or is there no difference?

 

hmm. Wonder how much of a difference .4 mph makes with respect to crawling and control?

 

Damn, now I'm wondering if I should do the same...

It's a confirmed 22 spline on the RA-60F 6 speed, right? I thought I'd seen 19 in here earlier.

Not even joking, I've considered swapping transmissions over this...

 

I haven't pulled the t-case and counted splines, but everything Wyatt has posted up says 22, and everyone here who has actually done it says 22. The atlas adapter for the FJ trans we're talking about says it is 22. So I feel pretty comfortable with the conclusion that it's 22.

The only place I have ever seen it stated as 19 spline is the Marlin website and the guys I talked to at Marlin

 

2x as slow 2x the control?

Alrighty.
Let's order me a coupler then! You don't happen to have a part number handy do you, bud?

 

They have one more left on the shelf...

Part #52-5715

TOY. 22 SPL. x JEEP 23 SPLINE SPUD SHAFT and SPUD SHAFT COLLAR

 

Thank you, sir!

 

You want to put the 4.7's in the rear case with dual gear drive cases but you have no option but to put the 4.7's in the crawlbox if you retain the chain drive case. Now that people have figured out the coupler, its a pretty solid setup as long as you aren't dumb with big HP.

Significant if you're playing in big rocks. One of the guys in our group has dual stock 2.28's and he said that he has to get 4.7's before he goes back and runs rattle rock at Windrock again. He followed me up and had to work quite a bit harder on the clutch than me just idling up things while focusing on line choice.

 

^^That.

If your rig is manual you want 4.7. In an auto you can easily get away with 2.28 because the torque converter effectively doubles the torque. I have an auto and 2.28 and it's as slow as my buddies manual with 4.7s.

 

2.28 vs 4.7 Differnece is pretty substancial.

[

 

Fancy

What is that?

I just did mine with a pen and pad