Forum: Performance Modifications

Haven't been able to find information on weather i can run E85 or not on a 2009 GMC sierra 4.8. In HP tunersit does have a section for flex fuel and...

So I am in the middle of doing a 6.0 lq4 swap into my 95 k1500 and am looking to do a cam while I have the motor out. It'll be a first as far as...

Hi Guys I have a tech ? I purchased a TCI flex-plate for my truck after i found out that my stock one is cracked. here is a few details on my...

I have a 2013 Sierra with a 4.8L. I have long tube headers ypipe back exhaust as well cold are intake and a tune right now but I want more power I...

Well I made it to the track last fall with my 6.0 obs rcsb truck ran good went 12.30 at 110 current set up is a stock lq4 with shaved .030 243 heads...

Hey everyone. I wasn't sure if this should go in the performance or conversion swap section so if this isn't where it belongs feel free to move it. ...

I keep hearing rumors that the spindle from a NBS (6-lug) can be swapped into an OBS to facilitate bigger brakes on an OBS. Cant seem to run them to...

Hey guys, just picked up a 2010 Sierra with the all aluminum flex fuel 5.3. I'm looking at doing the DOD delete and a cam with supporting mods. My...

Was thinking of using a 90mm (actually 88mm) throttle body off a newer 6.0 & 6.2 truck engine with the 4 bolt pattern but my stock intake is for the...

I bought a used 2003 Denali 6.0L LQ4 from a dismantler. I purchased a new cam from Lingenfelter. I asked them which cam would work well with a...

I'm wanting to build a decent 5.3. I've got the whole top end from a 2000 z28 I.e. heads intake fuel rail and injectors that I've thought about...

well let me give you guys a little back story, my little sister dated a guy all through high school and he had a 2002 ext cab Silverado with a 4.3....

I've been working on bolt in coil-overs for many different applications. This one is for a 99-07 with stock upper and lower control arms. This...

I have a l59 5.3 in a my 04 tahoe. Looking to upgrade the motor some but I'm stuck on what my best option is. I would like to try and us as many LS...

Well im building a k2500 crew cab with a lq4 4l80e. was looking at the comp high lift cam 54-424-11 for my build but my buddy told me he has a ECS...

Hi all, I'm new here. First post actually so if this is in the wrong place I apologize. I have a 95 c/k1500 Cheyenne single cab swb. I've been...

I have a set of hooker long tube headers from a 4 gen camaro does anybody know if they will work on my 01 shortbed 2wd reg cab truck thanks in advance

I have been looking for a street truck forum since I got my new toy. I just bought a 2002 rcsb with a 5.3,3:73 gears and a heavy duty locking rear....

I have a 01 shortbed and want to drop it so question is spindles or coil springs ?what is my best options alignment and tire wear .Im not looking to...

Is the LSA cam a good choice for a 600whp turbo 5.3L motor? I found this guy that has a used 09 Z07 factory cam set and this new LSA cam set for...