Can I gear up my 413?

[turbovanman²]

Yes, the 1.22 gears are rare.

The LU, if manually activated, will LU as soon as 3rd gear is selected.

When I converted mine back in 2010ish, I wanted full control so I just hooked it up to a toggle switch. To do the swap though, you need a new input shaft, converter, drill the hole if you don't have it, and a few valve body mods, LU solenoid.

[Ondonti]

Yes, the 1.22 gears are rare.

The LU, if manually activated, will LU as soon as 3rd gear is selected.

When I converted mine back in 2010ish, I wanted full control so I just hooked it up to a toggle switch. To do the swap though, you need a new input shaft, converter, drill the hole if you don't have it, and a few valve body mods, LU solenoid.

a670 ftw

[Vigo]

Yup all a670s were lockup from the factory because they didnt come into existence until 87 when the rest of the n/a 3spds also got lockup.

I dont think there will be any problem engaging lockup at a higher rpm then what it will bring you down to because with a low stall converter there's never going to be a HUGE rpm difference between locked and unlocked like there is with my '4800 rpm on the highway' converter. It was actually factory behavior to go into lockup while at high rpm and WOT with some of the 604s which used the SAME converter with the smaller v6s like 2.5 6g73. My old Avenger would go into lockup right after a 2-3 upshift while still at WOT. So the factory is not overly concerned about engaging under full stock tq.

[Reaper1]

A lot of diesel guys manually control their lock-up converters and lock them after launch

[MILKCARTON]

I have a lock up trans that was in a 91 shadow 2.5 turbo conv. that I parted out, my question I can I put a turbo action rmvb in it and still have the lock up and control it manually?

[turbovanman²]

I have a lock up trans that was in a 91 shadow 2.5 turbo conv. that I parted out, my question I can I put a turbo action rmvb in it and still have the lock up and control it manually?

Sadly no, the RMVB is missing the LU circuit. I wanted the same thing.

[Ondonti]

Sadly no, the RMVB is missing the LU circuit. I wanted the same thing.

I read that one made by "some guy" retained lockup. Same guy who made a transbrake version that could not retain lockup.

[MILKCARTON]

so will the rmvb work in this trans, just wont have lock up anymore? also what about first gen neon auto trans will the same rmvb work in this trans?

[Vigo]

Same trans other than ALL neons being lockup vs only some of the earlier k-cars. So yes, any valve body you can stick in a neon 31th will work in our trans.

[Ondonti]

Same trans other than ALL neons being lockup vs only some of the earlier k-cars. So yes, any valve body you can stick in a neon 31th will work in our trans.

If nobody is modifying them anymore for "cool" features are we dead in the water?

[MILKCARTON]

I looked on turbo actions website and same vb for older 413 and neon tranny.....

[Vigo]

If nobody is modifying them anymore for "cool" features are we dead in the water?

What do we really lack? Im sure having basic on/off converter lockup with a RMVB wouldnt be TOO hard. Just need a pressure source and a solenoid and get it back into the proper passage in the case. Might be some drilling and tapping and fittings involved but if you can build a 413 im pretty sure the same person could figure out how to make lockup work given the inclination.

It is also possible to convert a stock VB to manual-only, just without the reverse shift pattern. I have always wondered if it wouldnt be too difficult to get around this by replacing the "lockout plate" in the shifter by which i mean the piece that determines whether you have to push the button in to switch between gears. Another thing a person with motivation and a dremel could probably build. Or ratchet shifter if you can stand them.

I have a full-manual converted VB in my Lancer Shelby that was done by a friend of mine before i owned the car, but it has a bind downshifting into first if you're moving so i only go back into 1st at a stop. Other than that i have no issues with it even with stock shifter.

[Ondonti]

Are there any diagrahms of this stuff for thinking and tinkering?

Still waiting for someone to offer to sell me .91 transfer gears.

[86Shelby]

I know it's possible to do a RMVB and lockup; unfortunately I don't know the details offhand I'll see what i can find. A friend's hybrid powered CSX-T has that capability. I do know that he kept braking input shafts repeatedly and is leaving the lockup behind. FWIW the lockup input shafts do not withstand 400whp with the converter locked up on the dyno; the most he got out of it was 100 miles of driving nicely to/from work and the he got on it and the shaft broke again. The car hasn't been driven since and that was 2-3 years ago.

[Reaper1]

Warren made his own shifter many years ago. I think if you look near the beginning of his project thread you can find it. As with anything he does...it's SUPER nice!

Oh...and if the stock lock-up input shafts are breaking, has anyone tried having one made out of a different material (300M or the like)? I know this is a pretty popular thing to do for many auto transmissions out there being used in high power cars/trucks.

[Vigo]

Well the input shaft shouldnt care whether the converter is locked up unless you're shifting with it locked up. If they are failing due to power they would probably do it with the converter unlocked as well unless the converter is losing so much power it's protecting the input shaft.

I do find it plausible that the lockup input shaft is weaker by enough to cause a problem (it's obvious that it is weaker just by looking at it), but since so few people run them the introduction of one breakage anecdote doesn't give us much to go on unless others chime in, which would be nice.

[Ondonti]

Do those beefier 300m output shafts out there that were built all revolve around non lockup? I would assume if input shafts were snapping, then Steve was snapping them when he was running lockup. I read no such thing.

[Vigo]

I dont think they have to, but i think they did. The lockup one has some extra machining that would probably add a lot to cost.

Also, for most people if they broke the lockup input shaft on a drag car i guess their first step would just be to go to a non-lockup setup anyway.

I'm of a mindset that you have expressed before and might be alluding to right now: If the guy who ran low 10s in a Neon with a lockup converter setup in a 604 didnt break that input shaft (which may be different in some areas but uses the same converter splines/lockup snout etc), then i won't worry about it, and if i ever made more torque than that i would just limit it anyway so i didnt spin street tires in 3rd gear and break input shafts and spread cases and strip ring/pinion teeth.

[turbovanman²]

If nobody is modifying them anymore for "cool" features are we dead in the water?

Yep, he's long gone.

Are there any diagrahms of this stuff for thinking and tinkering?

Still waiting for someone to offer to sell me .91 transfer gears.

I'll copy the manual mods but stock shifter routine.

I don't have any .91 gears to sell otherwise I would.

I know it's possible to do a RMVB and lockup; unfortunately I don't know the details offhand I'll see what i can find. A friend's hybrid powered CSX-T has that capability. I do know that he kept braking input shafts repeatedly and is leaving the lockup behind. FWIW the lockup input shafts do not withstand 400whp with the converter locked up on the dyno; the most he got out of it was 100 miles of driving nicely to/from work and the he got on it and the shaft broke again. The car hasn't been driven since and that was 2-3 years ago.

Yep, but you can't do reverse and LU IIRC, as you modify quite a bit of the valve body.

Do those beefier 300m output shafts out there that were built all revolve around non lockup? I would assume if input shafts were snapping, then Steve was snapping them when he was running lockup. I read no such thing.

They are strong, I think Steve is using one but you have to use a 904 Converter, its a special unit made for this application and yep, no LU.