Forum: Powertrain

Well I was driving home and just pulling into my 'hood and my truck start driving really poor. Bucking, no power, low RPMs, etc. First thing that...

Why does the 03 LM7 5.3 have 10 more hp than the 00-02 and 5 more hp than the LM4 5.3? What all was changed from 00-02 to 03? Why would GM make...

well to everyone who was wondering, it CAN be done! :taunt: I my mezeire water pump installed onto my truck today, works perfect. I took pics...

I just got some dubs and now I want to level the truck out. The ass is in the air. The front actually looks fine because the bumper I have (Yukon...

Well, my stall keeps making a whining noise and sometimes even a sound like when you put a toothpick in a fan ,hahha, plus i have a vibration as...

115-841350 - 2000-04 2500 series 2WD & 4WD Pick-ups and Suburban 6.0 2000-04 Escalade, Denali 2WD & 4WD 6.0 2003-04 H2 115-841350 - $1294.99 ...

when you gonna swap those gears??? just gettin tired of seeing that 2.73 staring at me in your sig...lol Brandon :thumb:

Hey guys, which -heads and cam- do you think would be better for the 5.3L with the radix? -Stock heads ported -Get 6.0L heads -Get LS1 5.7L...

I have a set of 5.7 heads Im wanting to put on my 5.3 When using 5.7 heads on a 5.3 motor what head gasket would you use? The one for the 5.7 or...

Magna Charger, Inc. , manufacturer of superchargers and supercharger systems for foreign and domestic vehicles is pleased to announce the granting...

Is there a "ram-air" type system available for the 2003 2500HD? Something ducted to the airbox, similar to the FTRA. The Volant scoop won't fit the...

Is there a muffler that is a direct replacement for the factory one on a 2500HD 6.0? Something that would offer an increase in performance, but...

Hey guys, a new section for you off-road members. Let me know if this should be in here or another forum. thanks, allen

Hey anyone know how far a 5.3 block can be bored out to. Thinking about a little more displacement...hehe

Ive have heard they are,but do they have a two bolt and a four bolt main?I was kind of wondering what mine is?

Well, not too long ago I put on new shocks and I started to notice a clunk in my suspension. It seems to come from the driver side when I turn right...

anyone see any numbers for these headers yet. curious to see how they stack up against AS&M's long tubes. would love to see a dyno chart if someone...

I was just trying to find out what changes were made on the 98 engines to the 00 year. What changed to up the rated horsepower numbers. Can a 98 be...

I want to know how much heavier the 17" Z71 Tahoe rims are compared to a 16" Silverado rims? I was thinking about putting the 17" Z71 Tahoe rims on...

This swap was sooooooo easy it isn't even funny. Just a pull old, in with new. Those trans "quick disconnects" I got off without the use of excessive...