[chevmech1969]

ok the part# for the valve is K61970, i get them locally at a trans rebuilding shop here the last one cost me $17. cut one coil off of the spring that comes with it and add a tv check ball(large check ball) on top of the old torque converter soilonid that is in the transmission to seal it up. These only work in 700r4 that have the bore in the valve body for the lock up valve some of the newer ones do not. also for firmer shifts i would add a .500 boost valve, corvette servo or superior servo, large ratio reverse valve, and a 10 or 13 vane front pump rotor and vanes. if youd like part #'s i can get them for you. and just a fyi you can buy everything in the monster in a box from eat my shift from transmission parts usa for 397.00+ the 5 pinion planets there out of stock but they only add 120 to the price so its still cheaper than the 799. but less convienient.