DBW Throttle body database or swap info?
Have an 05 LQ4 with an LS6 intake and stock truck TB, currently I'm pulling vacuum in upper RPM and want to switch out to a larger throttle body / intake. I don't know what DBW throttle body I can use or if anything is compatible with the TAC module I have. Most likely will have to swap to a 4 bolt type TB. Any help would be appreciated! Want to stay DBW.
Gen III- (all 3 bolt)
78mm - All but 6.0 truck engines
80mm - 6.0 truck engines (you have either one of these 2)
Gen IV- (all 4 bolt)
87mm - all truck engines incl. 6.2
90mm - all car engines including LS7 (505HP)








