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blazerboy72 · 01-29-2007, 05:45 PM

Check shifty's thread just about everything for a LS1 will apply to hte 4.8. For the TH400 you need a spacer for the torque converter (forgot the real name of it) and some spacers for the bolts that go from the flexplate to the torqu converter. For a wiring harness I would recommend wait4meperformance.com They will rework yoour stock harness and reprogram the computer fairly cheap.

01-29-2007, 05:45 PM	#2
blazerboy72 Senior Member Join Date: Mar 2002 Location: Temple, Ga Posts: 854	Re: 69 Chevy W/ A 4.8 Liter Need Help Check shifty's thread just about everything for a LS1 will apply to hte 4.8. For the TH400 you need a spacer for the torque converter (forgot the real name of it) and some spacers for the bolts that go from the flexplate to the torqu converter. For a wiring harness I would recommend wait4meperformance.com They will rework yoour stock harness and reprogram the computer fairly cheap.