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The ReadyLIFT 66-3921 1
Additional fill bungs
These one-piece pushrods are manufactured from high quality 4130 Chromoly steel tubing that has been surface hardened for maximum durability
Features include full stainless steel construction
This kit includes new longer Grade 8 bolts
1982-1993 GM TH700R4/4L60 automatic transmissions. 2018 chevrolet corvette The ReadyLIFT 66-3921 1The B&M Transpak is the next step up from the B&M Shift Improver kit. It has all the features in the Shift Improver kit, plus it provides additional driver manual control (GM TH 400, 350, Ford C 6 and Chrysler Torqueflite only). B&M Transpak kit for 1982 1993 GM TH700R4 4L60 automatic transmissions. Most stock automatic transmissions won't downshift into low gear above 15 mph, and automatically upshift at a predetermined speed no matter what gear
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