Forum: Performance Modifications

I pulled the 5.3 and 4l60e out of my s-10 and will be replacing it with an LS2 and a 4l80e. I need to know what 4l80e to pickup to have redone for...

Anyone done a hydraboost setup on a NNBS setup, yet? I may end up having to go that route in the near future if I keep getting P0171/P0174 codes...

Anyone running a dif electric fan controller? Wanted some input if anyone has one.

I'm starting to order parts for my 2011 5.3, right after Christmas. I don't want to get to extreme, I have an LSX 454 being built for twins. But...

I am wondering if a fuel pump controler is a good idea for performance on a LQ9 stock pump. Or should I just make the jump to a larger volume pump. ...

Does anyone know if headers for a Trailblazer SS will fit on a 2003 Trailblazer EXT 2wd with a 5.3l? I know the flanges will match but as far as...

Any benafits with using 100 octane in a 05 GMC with the 5.3 and no mods? Just wonder cause a store by where were working has it and got me curious

Just thought I'd post up a few quick pics I took of a cut-away TBSS / NNBS intake manifold that GM had at the North American International Auto Show...

has anyone ran ones of these in a 5.3 or will it clear??

Ok so I am swapping a fresher eninge in my truck and I'm going to be left with a well used 4.8. I know the 4.8 is the lesser bastard child of the LS...

Didn't want to jack G's thread but I suck at figuring this stuff out. If I were to swap my crank and rods from the 4.8 to 5.3 what would the cr be?...

Pretty sure this is the right area to post this question. Regarding future ls swap in my truck. I've searched all over this site and web. Has anyone...

So today i went to the parts store and got some of the 2 1/2" flex pipe, only because my friends all said its what they use and works great, i didnt...

Are all the truck oil pans the same dose anyone know right off the top of there head ?? Will a 03 truck oil pan be the same as a 08 ?

Will the factory rockers from a 5.3 work with a set of 243 patriot heads? 7.4 lifters ...

Can I go before I will have to fly cut the pistons will my 231/236 598/602 111lsa cam work fine in my 5.3 fine ?

This cam going into a 96 2dr Tahoe . I drive this thing on weekend and evenings .. Some track time and more street time then anything.. What cam do...

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Curious i was wondering if anyone has used the OEM duramax 3.5 exhaust piping on there 1500 gas truck? I have one here and was thinking of...

So I'm picking up a ly6 this weekend to swap Into my 2008 gmc Sierra. Currently have the flex fuel 5.3 (243 heads) with a 218 226 .595 .605 113 and a...