How much did that 6l90 run you? That trans will be better on gas and has better gear ratios throughout than the 4l80. Please do a right up on this with plenty of pics. I am considering doing one of these swaps but Iv'e never seen it done before. When do you get started?
2007 GMT900 CCSB 5.3 VTS2300 Twin Screw Supercharger, Doug Thorley LT's, True 3" Duals into Dynomax Race Bullets, Nelson Tune, 4L80e w/transgo HD2-D, Truetrac, 4.10 r&p
Need list: Stall, PLX 200 for my crappy AFR, X-pipe, GM 20's.
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