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Discussion Starter · #1 ·
Putting together a trans for a K body 2.5 Turbo project. Using all junkyard parts.

95 Tbi trans as a base. ( Found a junkyard that has 20 A413's this was the newest I also grabbed his only Turbo transmission.)

Going to source a omni tranny for the .90 transfer gears to make a 2.60 final drive.

Also getting a Neon trans for the torque converter and HD clutch drums. (Heard diff and other parts are better too)

Problem is have no idea about stuffing more clutches into the drums. Which is which and how+ what clutches/steels to use.

Only care about it not blowing up need to do it as simple as possible so don't want to mess with bands,line pressure,valve body etc unless necessary.

Anyone on here ever build a A413?

Or can I just swap in the neon drums and it will be fine stock?

Gonna be a street car not a drag car.
 

· Old School Hot Rodder
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When I did my original T2K-CAR (VA license plate) a local transmission shop and I built an A413 that would almost give you whiplash on WOT shifts. I remember using a V6 kickdown band and we may have used a V6 High/Reverse clutch drum and possibly a V6 forward clutch drum. I modified the kickdown servo by eliminating the soft apply spring (replaced it with a stack of washers).

Some of the aftermarket suppliers have made thinner friction and steel clutch discs allowing the total to be increased. I raised the base line pressure by two turns on the adjusting screw. End result, with the optional 175/70-14 tires, on a 1986 LeBaron convertible it would shift 1-2 at 56 mph WOT and 2-3 at 79 mph WOT. Unfortunately where I had the powertrain after the car was totaled, water got into the transaxle and it is pretty much junk now. I have a junkyard sourced 1991 Shadow 2.5L turbo one in the replaement car now.
 

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Discussion Starter · #4 ·
When I did my original T2K-CAR (VA license plate) a local transmission shop and I built an A413 that would almost give you whiplash on WOT shifts. I remember using a V6 kickdown band and we may have used a V6 High/Reverse clutch drum and possibly a V6 forward clutch drum. I modified the kickdown servo by eliminating the soft apply spring (replaced it with a stack of washers).

Some of the aftermarket suppliers have made thinner friction and steel clutch discs allowing the total to be increased. I raised the base line pressure by two turns on the adjusting screw. End result, with the optional 175/70-14 tires, on a 1986 LeBaron convertible it would shift 1-2 at 56 mph WOT and 2-3 at 79 mph WOT. Unfortunately where I had the powertrain after the car was totaled, water got into the transaxle and it is pretty much junk now. I have a junkyard sourced 1991 Shadow 2.5L turbo one in the replaement car now.
Do you know what the part number is for the clutch discs I need for the front drum?
Everyone said leave the rear drum alone? is it called Forward or direct?

I keep seeing conflicting info on the front drum being called the direct or Forward drum.

Alldata says its 4567887
This website says so too

Also the A404 steels are 5205667 supposedly but the parts sites are flipping Forward and direct with front/rear so it's confusing.

Last thing is after making 5 clutches fit into the Front/"forward-direct whatever it's called" drum

Do you HAVE to raise the line pressure?
How much?

If so do I NEED the HD band strut?

I want to do this as easy as possible my workspace is a trash barrel no joke and want to do as little as possible.

Research says

pull pump
loosen band or remove? (band strut?)
remove front drum (don't need to remove rear?)
add extra clutches/steels set clearance to .35-.40?
drop in clutch drum
new gasket on pump bolt up


This guy says the rear clutch is called the Forward so is this right?
There's no A413 vids this a 904
 

· Old School Hot Rodder
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Rear (inner) clutch is the forward clutch, front is the reverse-high clutch. Look at it logically, if it has a band around it it can't be the normal input clutch. Sequence is forward clutch, applied in all forward gears. Low-reverse band (rear one) is used manual low and reverse. Kickdown band (2nd gear) is applied in 2nd only, reverse-high clutch, applied in 3rd (direct) or reverse.

As for the clutches, I think we used some thinner ones, designed for beefing up some of the earlier units. If you go through the Chrysler parts lists with the transaxle numbers in hand, try to find V6 parts as they will be more of them used or different lever ratios. The older Ford C4s had very limited clutch packs, and one of the aftermarket companies made some thinner ones to allow more discs to fit.

If you can score an A670 for parts, it is a V6 transaxle.
 
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