A761E six speed

[Jim Blackwood]

I bought a tranny out of an SC430 which is supposed to be an A761E six speed automatic, can anyone give me some identifying characteristics I can use to confirm this?

Jim

 

[Thermactor]

Isn't the model stamped on the side of the transmission case? What numbers do you see on it? Any pictures?

 

[Jim Blackwood]

There are several numbers. Model# 35-50LS, part number 35000-24420, Serial# 01HJ-05782, AISIN 8835-7, 35010 24420, 4272 01HJ705782, 21HQ31255,
JTHFN48YX, and 20013286.

None of that means much to me, and apparently not much to the Lexus dealership either.

Jim

 

[Thermactor]

It confirms as a cross reference to the 2001-2005 GS430 and 2002-2005 SC430 transmission listed to Lexus. It appears to be a five-speed.

 

[Jim Blackwood]

Thanks, that confirms my suspicion. Another fine mess to sort out. So then the question is, do I insist on the 6 speed or go with the 5. The answer to that may depend on the shifter module. Is there a standalone TCM available for either transmission?

Jim

 

[Jim Blackwood]

Another quick question, can you give me the part number for the A761E? (or a link to the cross reference?)

In dealing with this yard I'm almost flying blind and it's already cost me. I'd really like to know how to ID the A761E positively. I saw where the press release said it had a "flat" torque converter. Anyone have info on that?

Thanks,
Jim

 

[Thermactor]

What you'll find on the car is 3500050150 or 350105015084. 2004-2006 LS430 and 2006-2009 SC430. 35010-50160 seems to work as well.
Here's an auction link with pictures of the unit that will be helpful: http://cgi.ebay.com/ebaymotors/04-0...r_Truck_Parts_Accessories?hash=item53dfdfb2fa
Which yard are you dealing with here? Need someone to back you up? I live about ten miles away from Florence.

 

[Jim Blackwood]

Thanks for the info. Well the picture has changed a bit. I considered just using the 5 speed at least temporarily, but as things evolved I now have the junkyard sending me an 8 speed out of a 2008 IF-S. Quite a bit more expensive but I'm hoping it'll be worth the extra bucks. More of a challenge to make it work of course.

Thermactor, if you're that close it'd be great to have you take a look at these. The 8 speed should be here by mid week. I'm on Gunpowder Rd. in Union/Florence, you can contact me at (859) 816-2187.

Jim

 

[Thermactor]

Sounds good Jim, I'll call you sometime mid next week and we can have a look at the trans and discuss the project. Looking forward to it. Cheers!

 

[Jim Blackwood]

Here's a shot of the valve body. Looks like 7 solenoids and 1 sensor internally, 2 more externally. Anybody recognize this?

Jim

 

[Jim Blackwood]

I Just did the mod to the bellhousing by putting the entire transmission between centers in my lathe. Only had to trim about 10mm off the top of the bump for it to clear all the way around. I cut a counterbore 1/2" deep and 13-1/2" in diameter to clear the new flexplate's ring gear, and then cut a 1/8" deep 14-1/2" step on the outside as a register for the mating plate which is concentric and square with the input shaft.

This operation would have been impossible with any domestic transmission that I am familiar with, but this one is more precisely made, has no play or wobble in the input and output shafts, and the park pawl solidly locks the output shaft to the case, allowing my collet chuck to drive it using the precisely ground pilot on the output.

Next step will be to machine a mating plate with a matching bore centered on the engine this is to mate up with. Ostensibly a 340 Buick, but if the 8 speed I contracted for shows up I'll probably mate this one to a Rover V8.

Jim