200r(brf) vs 200r from regal limited v8

[jessecool]

I am currently running a 200r from a regal limited v8 with a D5 TC...and i am having laggy shifts under boost...is there a major difference between the two transmissions? or could this be a torque converter issue.

 

[mikestertwo]

If it's from a V8 car it's either a KTF or KCF. The shift timing will be off. Those transmissions are for smaller gears plus have a smaller intermediate servo.

 

[jessecool]

you hit it on the head...boost spools but no power...then after shift it pulls hard........what are my options to dial this tranny in?.(BRF) valve body..new billet servo?

 

[mikestertwo]

You will need a BRF valvebody and governor and you should replace the intermediate servo with one from a BRF trans or go with one of the billet servos...Superior...CK's...

 

[GNeric]

Plus that will more than likely have a .421" throttle valve in the pump and not enough line pressure to hold it together. You will need the Int/Rev boost valve as well so Reverse and your M1 and M2 pressures don't suffer. If you have an early model (pre 85) you won't have a hardened sun shell from the factory.

 

[jessecool]

this one is an 86, so i might be lucky with the hardened shell.. I also seen that gbody parts have a shift recalibration kit with billet servo for 249$ ....i have a local friend who has been doing trannys for years. but isnt familiar with the special requirements for a GN. If anyone has a simple list of parts to aquire...i can round them up and have him work his magic...thanks guys

 

[novaderrik]

this info would be useful to me, as well. i've had a trans from a 307 powered Caprice in my car since it blew the stocker up at the track in the spring of '05 and it does exactly the same things as the OP..

 

[bison]

The critical components are the vb, governor, servo, and boost valves in the pump. Without these you have a non high performance calibration. Any of the good recalibration kits have the boost valves and servos are available. CK sells a recalibration with a servo. I have a good supply of vb's. I have a few governors. I can supply stock servos also. PM if interested If the trans is out there are a few other area to check but not worth chasing unless the trans will be torn down.

 

[INEEDAGN]

Don't forget to put the correct BRF wiring/switches in it as well. 3rd gear pressure switch signal affects timing in most chips, without it you might be chasing knock issues when it hits 3rd.

 

[jessecool]

Well i picked up a low mile brf gn tranny 200$...but the pump stator shaft looks pretty worn...So i ordered a (hardened stator shaft,front and rear new seals, as well as a filter and gasket kit...is there anything else i should replace while i have the pump out?

 

[stovebolt 34]

Am I right in assuming the 3rd gear pressure switch on the BRF's just tells the computer in the turbo cars what to do - timing , etc . Does it also lock the converter ?

 

[bison]

Am I right in assuming the 3rd gear pressure switch on the BRF's just tells the computer in the turbo cars what to do - timing , etc . Does it also lock the converter ?

The stock chip and other early chips use the pressure switches for timing/boost. The newer chips use the VSS for this so it isn't critical. I just did a transmission for a customer and the 3rd pressure switch was deleted by someone prior. Chances are it was done sometime in the 90's based on what else I saw when takingnit apart. There is no reason to assume any of that is working properly in any car you didnt own since it was new.