This is the aftermarket T56 six-speed manual trans available from National Drivetrain.
One design dilemma that comes with the lockup converter is that the transmission only sees full oil pressure when the converter is locked.Used BMW 3 Series 867 Great Deals out of 26,016 listings starting at 1,000.Overdrive is king of cruise, and GM has done its part to engineer strong, reliable overdrive automatic and manual transmissions for all its new cars.Richmonds bad-boy overdrive six-speed is a whole different beast from the rest of the six-speeds on the market.Do these parts fit your vehicle?The other switch gets connected to a ported vacuum source and measures engine vacuum.This is TCIs Converter Lockup Control Wiring kit (PN 376600 which allows installation of an overdrive automatic trans with a lockup converter in any non-computer-controlled car.A TH350/PG slip-yoke will work with the TH700-R4 trans, but a TH400s will not.This swap requires minimal fabrication skills and very little in the way of custom modifications.You may run into transmission oil-pan interference problems when bolting the TH200-4R into early Camaros with the stock TH400 crossmember.Overdrive Automatic Swaps, starting in the early 80s, GM began installing four-speed automatic overdrive transmissions to improve gas mileage.You may have to switch to a dual-pattern flexplate if your car came equipped with the TH400 trans.
Holley, TCI, ACT, and GM all offer cable attachment brackets to facilitate TV cable connections to any carb.
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But most aftermarket performance transmissions are valved to alleviate such problems, and running a supplemental trans oil cooler is always a good idea.2019 CarGurus, Inc., All Rights Reserved.The Richmond gearboxes are unique in that they can be ordered with a variety of gear ratios to fit different driving styles.It is ideal if youre replacing a TH350 cracked steam gaming engine 2013 or Powerglide trans because a TH200-4R will practically install itself into a TH350/Powerglideequipped car.Manual Gearbox Swapping, this is where things get complicatednot because swapping an older four-speed or even a newer factory five-speed is all that difficult, but instead because there are so many different variations of manual transmissions floating around today that just knowing what youve got.
So when the throttle is either wide open or completely closed, the converter clutch is unlocked, allowing converter slippage.