insomniac21772

To make a long story short... i have a 93' RX-7 with a 3 speed th350 tranny conversion. Drove AMAZING!!!! for awhile, transbrake iand ratchet shifting s def a new experience... recently the car began to shake like crazy. AFter taking it to KDR i found out the bell housing is cracked damaged fairly bad. Basically Im planning on buying a new tranny that should bolt up to the same adapter plate thats on there right now. I was told its a B.O.P. (Buick, olds. pontiac) th350.

I'm posting on this site because there seems to be a much greater knowledge of these trannys around here.

Questions:

- I want another gear for the highway, is a TH 200-4r A direct swap for a th-350?

- Do you recommend solid mounting the trans on the body? or should you use some kind of bushing?

- Does anyone have a built up Th 200-4r for sale for a decent price?
I've seen them on the internet for ~$1700 but I'm a current student and hope I can find one with at least a stronger casing for under $1000.



I want to get my car back ASAP!! so any help would be greatly appreciated!!




SUSPENSION
R1 Front Strut Tower Bar
Tokico Shocks (5-way Adjustable)
H&R Springs
RaceShop Roll Bar
Toe Links (not installed yet)
Trailing Arms (not installed yet)
RX7.com Diff Bushings
Diff. Brace
KAAZ 1.5 LSD

DRIVETRAIN
TH350 Transmission (fully built, w/ Trans Brake)
5500 Racing Torque Convertor (Edge Racing)
B&M Pro Ratchet

ENGINE

SS Downpipe
SS Midpipe
Racing Beat Catback
Pettit AST
Race/Street Port (HUGE)
88 High Compression Rotors
Racing Seals
180 Thermostat
Silicone Hose Replacement
XS Engineering T04E Single Turbo (Garrett)
Cast Ductile Iron Exhaust Manifold
HKS Racing Wastegate with 50mm valve
A'PEXi Twin Chamber Blow of Valve
K&N Air Filter
M2 Large (Racing) intercooler

FUEL SYSTEM
1600cc Secondary Injectors
KRD Fuel Rail
Supra TT Fuel Pump
Aeromotive FPR

insomniac21772

bump someone please help!

Can I make the th200-4r work inplace of the th350???

I have a custom torque converter to work with the th350 from edge racing.. could I use the same if I decide to put a 200-4r in?

insomniac21772

Thanks for the response... few more questions for anyone who is willing to answer

Is the th2004r onlyi a direct replacement for short-tailed th350's?

Would it be beneficial to put some kind of support brace from the trans to the engine? or would that cause the casing to break easier?

insomniac21772

Also can anyone recommend a transmount and where i can buy one?

insomniac21772

Could I use the same flexplate I have on the th350 now?

Any other tips/suggestions on completing this 350 to 2004r swap in my mazda would be great. Dont want to run into any unforeseen problems.

jakeshoe

iTrader: (14)

I've done the 200-4R's in the RX-7's.

You can use your same driveshaft assuming you have a short tail TH350.
You will have to move the mount back about 6" for the 200-4R from your current location.
I would hammer the floorpan around the servo area for clearance.
Most 200-4Rs have a universal pattern so no adapter is needed. They do have a fairly robust bellhousing. Thicker than a TH350.

You will have to setup a TV cable.
As stated the converters are different.

The 200-4R is a great trans for the RX-7. Fits well, gives a good gear spread, and has a good OD ratio.

insomniac21772

This is good news!! Thanks so much

I'll be sure to pm you if I need help.

BTW Does anyone have a 2004r for sale?

insomniac21772

Ok one more noob question for you guys.. The current Th350 I have in my car has no clutch and a b&m proratchet so I have to pull back on the ratchet to shift. Do I need a full reverse manuel valve body for the th2004r I'm going to put it.

Basically I pull back the ratchet to shift, does that mean I currently have a full reverse manuel valve body or an automatic?

insomniac21772

can someone answer my noob question? If I want to keep my current pull down ratchet shifting without a clutch to push in.. what kind of valve body do I need on the 2004r?