LS6 Intake Swap

[RedHeartbeat]

HOUSTON?!?!?! NelsonPerformance is in SanAntonio and they do mail order tunes that are very sharp if you can't drive 4.5 hours to get a live tune.

[bluecajun5.3]

this might clear up a few things and also, i did not use a bolt-on pulley.

i used a water pump from an fbody/corvette/gto (car style)
you have two options.
the way i did it was i completly pulled off the car style water pump pulley, heated up the shaft, then hammered on the truck pulley (the reason why you see the threads is b/c that is the skinnier truck pulley) just enough to where it lines up with the rest of your accessories.
or
you can pull pulley out some with a puller like this, just enough to where it lines up with the rest of your accessories.
V car style pulley pictured below...


Lance

[bluecajun5.3]

i would also like to add...

is that you don't necessarily need a custom relocation bracket.

what you can do is buy a longer bolt (6 inches long 10mm x 1.5 threads) for the idler pulley, space it out with washers untill it lines up with the rest of accessories. you'll be placing that bolt and pulley in the very top bolt hole on the p/s and alt. bracket. like this...

[aray327]

I have been reading this post for months. i have an LQ4 and swaped to an ls6 intake (inspired by your post). You mentioned pulling out the pulley, but your photo above looks like a water pump from a 98 f-body and it lines up perfectly. What's the best way to go. I already have a newer style f-body water pump.

[RedHeartbeat]

The post two posts down explains how he made this work. He removed the Fbody pulley and replaced it with the truck pump pulley.

[farmtruc]

To add to the relocation bracket;
I bought the Area 51 relocation bracket and just didn't like how the pulley was positioned. We drilled and tapped a new hole in about the same location as the picture above, worked out great!
I like the billet bracket, however, I don't like the location they put the pulley at.

later,
allen

[383GMC]

Newbie here, i got an 03 gmc z71 with a 5.3L. I was going to do the ls1 intake swap, then someone told me about the LS2 Trailblazer SS intake, what do you think about that setup, will there be the same installation process as the ls1, Thanks

[ThunderBolt]

I've looked into doing this awhile back and you can keep all your factory accessories with the ls2 trailblazer intake manifold. You will have to put a ls2 throttle body on though and you can buy a conversion harness from lingenfelter performance to hook the new throttle body up for around $50. Not sure if this setup is better than the ls6 as far as HP numbers go but it seems like it'd be a less complicated install without messing with the brackets.

[low91]

How much torque would be lost when installing an LS6 intake? Would any be lost if using an LS1 intake?

[bluecajun5.3]

probalby none w/ ls6, probably a little w/ ls1