birdmaro

iTrader: (45)

nothing much more than the title states.

i was wondering if anyone has or is working on a method to getting that 6l80 onto/into a fbody.

tptransmission

Parts are scarce for conversion due to the bigger problem of how to manage the controls. As for the box it should fit no problem, you just need a modified crossmember and drive shaft. You could use a cross member that as the mounting for the torque arm to cover that parts The transmission is a actually shorter that the 4l60e.

rsz288

FYI - Actually it all seems so easy now it is finished:

https://ls1tech.com/forums/conversio...o-does-go.html

If it fits an early Camaro, then you have a very good chance it will fit into your later F Body.

Have a buddy that is doing same, and so far he has managed to massage the tunnel to get the trans into the right position, though with chassis work as well. Also know of another example coming together in CA.

Cheers.

tptransmission

Fitting it in there is not a big issue, it is a matter of what you can do with the controls. matching N/V to get it to work limits you options for axle ratios and tire sizes. Does Speartech offer you the flexibility to reprogram the shift pattern and shift feel?

rsz288

Unless I am incorrect, Speartech provides factory spec calibrations. Chuck at Corvette's of Westchester has a lot of experience with A6's in Corvettes and feedback is that he has made a lot of people very happy and improved considerably on stock on shift patterns and feel.

Based on the re-calibration work done to date personally, the improvement in shift feel has been excellent . Hard to see why the factory sets these tran's so lazy from the factory. They are capable of smooth, quick, almost imperceptible shifts.

N/V ?

Cheers,

tptransmission

Then they should be able to cater to all those people wanting custom calibrations for their Street rods that have installed an LS engine.

N/V - in a nutshell is an axle ratio and tire size calc that the controls use.

rsz288

Ok n-rpm, v-velocity?

Yes custom cals no real hurdle with the right wiring/ECM setup, and time to get the cals aligned for the customer expectations, though racing and hi stall converters are a another subject again.

The right stock calibrations do very well though, with the axle/tyre details set up correctly.

At the end of the day though, I really think your type of custom controller will potentially be a giant leap forward for the 6L80/90. GM needs to make a lot of compromises and their objectives are (honorably) different to the hot rodder.

Until then, at least in the US, Chuck CoW knows his stuff with these, as do others like you guys I would guess.

Cheers.

tptransmission

The right stock calibrations (so to speak) are not the subject of debate. We can all adjust our calibrations to conform to production limitations. If they Know their stuff then a customer put and LS7 in a 1968 Camaro with a 6L80e or 90e and a 4.10 axle and have the ability tailor any aspect the want.

rsz288

A 4.10 axle with a 4.03 first gear for 16:1 overall? Why? At least one point of the A6 is getting a 4.11 equivalent ratio off the line with a 2.73 rear axle, with a double overdrive on the highway. Holeshots with good economy.....

tptransmission

The real question is can Speartech calibrate the transmission for such an application?

snketr

iTrader: (3)

http://www.speartech.com/



phone: (765) 378-4908

email: speartech@comcast.net

Speartech Fuel Injection Systems
3574 East State Road 236
Anderson, IN 46017


Ask them.

rsz288

Ditto ^^^^^. He has a build thread on here, and is a sponsor. If I recall correctly, his truck runs a 3.73 axle and he must have that set up ok. Ran a 12 or 13 first time at the strip, with a stock LS2. 3.73 isnt far from 4.10.

He may also be interested in your custom controller.

Cheers.

birdmaro

iTrader: (45)

i'll call them later on. forgot about this thread.


the only comment i have is that the rational behind the A6 (for me) is to be able to go from 4.10s with a 4l60e and go into a 4.56 or higher with a 6l80e and not run out of gear.

w3s1c0a5t

iTrader: (3)

To get 4.56 gearing in 4l60e would only take like a 3.08 in 6l80 for the same relative gearing thats the beauty of it.

chevyz2801

iTrader: (20)

how strong are the A6 trannys

rsz288

6L90E 555HP/550LbFt Input TQ/885LbFt Output TQ (car)

6L80E 469HP/439LbFt Input TQ/664LbFt Output TQ.

Factory. With a warranty.

chevyz2801

iTrader: (20)

so is this the tranny that is going to be the upgrade for the 4l80

tptransmission

the 6L90 will replace the 4L80/85.

chevyz2801

iTrader: (20)

How much will it be to go from the 4l60e to the 6l90e and when do you think it can happen? I was about to put the 4l80 in my car since the 60 i have lost 2nd would you Waite and go with the 4l80 or 6l90

poorhousenext

I'll probably screw up here, but what is point with Speartech question, and what can Trinity Transmissions do with controls/controller that could be of help to me an others?

What Speartech provided me with is Engine/Transmission wire harness with OBD2 port, capability to use the TU/TD, SM, or normal shift modes via shifter from G8 Pontiac.

If I want to remove the trans computer and send it to him, he will download Corvette program to replace it's current truck program. I didn't ask if he updating axle ratio and tire data.

Can Trinity supply custom calibration program for my 6L80E to match my choice of 3.07 axle ratio with say 25.75" in 2950 lb car, powered by LS7 crate engine? Since I have a stalled converter installed at present, would that present a problem for you to supply program? I have a stock Torque converter sitting on shelf as well.

Car is still in process of being built, held up at present time wanting on Body shop to get done.