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Re: 4.8L/6L90E swap???
Hey 87skier. My truck is d5.
Do I adjust the tap up/tap down as mine doesn’t show force shifts.
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1956 Chevy Bel Air 2 door
1956 Chevy 210 4 Door
1970 K20 LWB project the Hulk build w/Supercharged 4.8L-ly2/4L60E HULK BUILD
1970 C10 Yellow/White Deluxe LWB w/ 5.3L-LC9/6L80E
1968 K10 LWB Dark green my son calls it "THE HULK Jr" HULK JR *SOLD*
GO  GO!!!
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