LQ9 Swap
#1
LQ9 Swap
Hey guys so I have a 2000 Silverado 1500 with the 4.8 LR4 engine which I’m going to swap it with the LQ9. I’ve been researching and found that when swapping with the LM7 the LQ9 bolts right in, is it the same for the LR4? If not what additional parts will I need do do this swap?
#4
100% Redneck
If the LQ9 has a electronic throttle body with a returnless fuel system... just use the 4.8 intake, rails and throttle body. If the LQ9 comes with a ECM and it has the blue/green connectors... the ECM may not work unless it has the IAC chip soldered on the board, some do some don't. The IAC sensor is needed for the drive by cable throttle bodies. You should be able to use the 4.8's blue/red ECM but you'll need a tune especially If you're going cam, springs headers etc. you'll need injectors too. The duty cycle on the 24# injectors for the LQ9 are almost maxed out stock.
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