poorhousenext

Your yoke is better than my yoke... Your baby yoke doesnt have a pacifier to suck on like mine. I do believe mine's pacifier is going to cause me tunnel fitment problem I wasn't expecting.





The 6L80's pan is same depth as 6l90's. With frame strapped down to trailer I have 5.5 inches of ground clearance. Pan rail is level with bottom of frame rails.

rsz288

Hi Jere, Heh heh Your yoke is interesting. Seems to have a harmonic dampener integrated into it. I would have liked to use something like this. It looks a little smaller and more compact than my 6L90 truck yoke. Legend has it that the 6L80 output shaft is smaller than the 6L90. (Oh dear, we seem to be into who has the bigger yoke....)

Your 6L80 pan is the deeper style. At least you have easy options if you need more ground clearance at the end of the day. Looks like you had your rear x member revised to get the exhaust through. Looks good.

I posted some shots showing yoke differences (what a laugh) the rear x member (pine) mock up and trans position, also some shots showing ground clearance with front cross member (sub frame) at 100mm/4" ground clearance.

Additionally a GM shot of an STS-V 6L80 with what looks like a very shallow pan (plenty of clearance) and a couple shots from a VE Commodore (Pontiac G8) 6L80 showing a shallower pan - 2.5" at the front vs 3.3" for 6L90 / 6L80 truck.

While a 6L80 shallow pan MAY bolt up to a 6L90, it will need some re-engineering at the rear to address the longer 6L90 case. The ultimate answer for max ground clearance may be a fabricated pan and revised filter assembly.

(Photo credit for G8/VE shots - Marannos Sydney - the vehicle was a twin turbo VE. One of these ran 11.2 in the 1/4 a couple weeks back at the LS1 Nationals. Stock 6 Litre and A6 except for TT kit/tune. 25mpg for the 600 mile round trip, racing and road testing.)

TH400 / 6L90 Yoke Comparison....


Rear cross member mockup with pine. This positions trans rear case high point at about 1/2" through the tunnel.


Rear cross member mockup shows rear mount lower face level with the top of the sub frame side rails.


65mm / 2.6" pan ground clearance with front cross member/sub frame at 100mm (~4").


GM 6L80 Cadi STS-V side view. Shows shallow pan.


VE/G8 front pan view. Pan measures ~2.6" deep at the front.


VE/G8 rear pan view. It has a drain plug! (actually this is how the level is checked. Plug is pulled and if no oil drips out, add oil until it does )


Now to close up the trans tunnel nice and neat, get a driveshaft built, and get the LS7 together.

Have a good week!

VictionOne

Great thread and thanks for the 411. It helps a lot of us out there. Let us know what your going to do with the pan. The shallow pan STS 6L80 is a sure fit but a 6L90 should hold up to a lot more abuse. Now with that pan...

chubbytexan

rsz288,

I have a Solstice 650HP LS7 (Schwanke) /6L80E project on the go and am working on pan problems myself. Nice to see the Cadi pan is shallower by almost and inch. I have a Vette pan, which is around 3” and I am about 1.5” below the frame, so that ~1” extra would get me close

What about running a straight sump pipe around the driver side behind the solenoid pack to the back of the trans and running an external filter? (During acceleration fluid will be sent to the back) I read the 6L80 filler is about 3” above that pan gasket, so you could trim a pan to 1” and still have 4” of fluid. (Solenoid pack runs about 1” below the gasket level anyway)

So, how much longer is the 6L90 vs the 6L80.. I should make sure I leave room in case I blow up the 6L80.. Also, do you know the part numbers for the Cadi pan and 6L80 and 6L90 Yoke?

Great project!

Thanks
Chubby

rsz288

Hi Chubby,

A Solstice, what does that weigh in at?

6L90 is about 1.4" / 35mm longer. Mainly the case...evidenced by the longer pan.

I have the yoke PN somewhere, I will come back to you. The 6L80 has at least two types of yokes. The one shown in this thread on Jere's/PoorHouseNext Corvette, and the G8 style which has a large rubber triangle on it. Probably also a regular style yoke for a truck.

On the Cadi pan, I was informed very recently that GM US no longer lists the shallow pans as parts. Only the deep ***** - which turned up when I thought I was ordering a shallow pan. Whether cost cutting, or technical (lack of oil capacity), or even correct, who knows.

I was hoping the Cadi pan as shown in the pic here was actually even more shallow than the G8 pan, so that was the best hope. Currently waiting on some clarification on this pan and whether it is still available. I have about 6 PN's on pans, but not sure what is correct for a shallow pan at present. Unless a dealer stocks them all, hard to tell what is correct.

The idea of a remote filter and different pick up has a lot of merit. Another enthusiast doing an A6 Camaro suggested this too. It is certainly the best option for maximum pan clearance. The pan could then sit right up close to the solenoid pack/controller as you mention. I suspect the critical part is to maintain the filter integrity and low restriction (these filters are much finer than the old style trans's) on the intake side to the pump. mmmmm....

Controller/solenoid pack clearance - ~40mm to pan rail:



And the filler plug...where the white plastic plug is...the right level apparently is when hot and running, and positioned according to GM spec, the oil should only just overflow out of the check hole in the oil pan. So when it is cold, and the oil drains back, it must be higher than the plug....

Oil check hole in pan is for cars without dipstick and trucks have a dipstick.



Am sure the aftermarket is likely to come up with a filter/pan solution any day now.

I'll come back on the Yoke PN's and try and post some pan PN's if I can make sense of them.

Cheers.

chubbytexan

rsz288,

Normal Solstice is about 2800, but with some weight reduction I am hoping to keep it under 3000 lbs with the new mill and trans and new diff.

On the filter I have done something like this before and they go down to 10 microns and have a bypass value in case the filter gets plugged, which it shouldn't unless your tranny is cooking anyway.

Good luck,
Chubby

rsz288

Solstice....mmmm....light! Should really haul.

How did you get the pickup in and out of the pan area (if the application had a pan....), and what size hose/pipe was needed?

FYI - for those interested:

Oil intake to pump - this is a ~1" hole....



Photo of clearance between controller/solenoid pack and filter....the legs on the filter which space the filter off the pan floor, sit 80mm below the pan rail....



Cheers.

chubbytexan

In the pan was just a pipe. The filter was on the pressure side of the cooler outlets. Problem here of course is if the tranny creates an obstruction before it hits the cooler filter (aka drag racing). Filters I was talking about would not work on the suction side, but there is probably room to fab a small secondary pre-filter at the back just in case.

rsz288

OK. Thanks. I suspect the oil on the 6L's needs to be much cleaner than in the past. Apparently the computer actually measures the volume of oil operating each clutch in each change and sets a "check engine" if they are off by more than some error amount. Black art how these operate!

chubbytexan

Good point,

I think a secondary pre-filter could be made adjustable to tune out that issue, but it would take some investigation. I will probably have to go that route, but it will be some time before I know the proper sizing as currently I am down to the frame rails

Good luck in the meantime..

poorhousenext

RSZ,

Below link may give you a better idea of what CTex is doing. Looks like he's upping his HP to compensate for the auto's drivetrain lost with 650HP Vs 585HP the Hot Rod Soltice has at the rear wheels.

http://www.hotrod.com/projectbuild/h...est/index.html

Little teaser Data

VEHICLE SPECIFICATIONS

Wheelbase: 2,420 mm
Track (f/r): 1,533 / 1,566 mm
Mass (curb): 2,861 pounds
Weight distribution (% front): 52

The V-Box Data

0-60 mph 3.32 sec
0-100 mph 6.58 sec
60-foot time 1.88 sec

0-100-0 mph 10.30 sec
11/44-mile time 10.99 sec
11/44-mile speed 133.25 mph

60-0 braking 95.62 feet

Max. lat on Michelin PSII 1.05 g

Speed Time
60 mph 3.32 sec
100 mph 6.58 sec
140 mph 12.19 sec

rsz288

It all becomes clear now....thanks Jere. Impressive project.

chubbytexan

Yup!

Poormans Supercar!

LSfan70s

Subscribing!
Nice info guys!
How much is for a used 6L80/90??

chubbytexan

I picked my 6L80E up for $1700 with a stock 300mm vett torque converter.

Sharpe

iTrader: (7)

Awesome thread...

rsz288

Some PN's:

Trans Cooler Pipes (VE/G8 style): 92190644
(these are pre bent to run from the trans cooler points to the front of the engine. Very neat. List $56, GMPD $33. AU List $50. Good value).

6L80 Yoke (3 bolt flange/rubber coupler type): 24237043

6L90 Yoke (truck type with regular style uni): 15897994

Shallow VE/G8 filter: 24236930* (revised from 24236932).

Shallow pan - VE/G8: 24228399* or 24239528 (VIN specific?)

2008 6L80E/6L90E truck filter: 24236933

2007 STS-V 6L80E Filter: 24236931
2007 STS-V 6L80E Pan: 24235511 (3.3" deep pan)

2007 STS 6L80E Filter: 24236933 or 24236931
(depending on VIN - 2 different pans independant of VIN)

2007 C6 Corvette 6L80E Filter: 24236931
(Will have one of these in a few days to establish whether deep or shallow).

(PN's with *'s dont come up on GMPD.)

The GM photo posted in this thread is titled to come from a 2006 STS-V Cadi. Maybe someone has access to info/knowledge, that can confirm if this is really a very shallow pan or not - for 2006. 07/08 pans appear to be deep style from the PN's above.

Scaling the pan depth from the picture, and knowing other measurements on the box, like the shift shaft centreline to the pan rail, tends to indicate that the pan shown in the picture, is ~2" deep.

FYI - These trans's seem to be available at $1800 + core $1k from a dealer. Speartech also seems to have them, as may "Valvegod" who is on this forum from time to time.

Cheers.

chubbytexan

Thanks for the PN's rsz288!

Let me know once you have the C6 filter how deep it is. The pan and filter I have is said to come from a Corvette due to the 300mm converter and its 3ish inched deep.

Gm-LSX

This picture is taken from slightly above. Naturally making the Pan LOOK much more shallow because of the big radius at the edges.

SS Enforcer

Hi Ian I met you a couple of weeks back at Wills in the Blue Mountains, it certainly looks like a good project you have going.

The pics of the 6l90e are very helpfull in deciding weather to put the bigger box in my VE or not. Is a shallower pan available ?

I will be watching this one all the way.

cheers
Paul