I have a 2005 GMC with the 5.3 323. I want to make it fast and strong. What are some bolt on's as well as internal things i can do to it to acheive my goal. Such as certain Heads, cam, lifters, gears or anyother ideas that might be out there that im not aware of. Ive tried searching things online but had no luck besides cold air, plug in programmers and exhaust. im looking for low end power such as 1/4 mile racing and heavy pulling. Thanks any help would be great

 

Which 5.3L do you have, there are 2. What truck, and current gearing?

Read all the sticky's in this and all the sections, you will find most of what you seek... and then some.

Welcome to the forum and enjoy!

 

Its the 1500 sierra and I wanna say its the T but im not sure if thats what your asking or not. The current gear is stock and i have not a clue its a crew cab Z71 other than that i don't know. Where can i look to find out if it important?

 

LM7 5.3L is your engine designation.

Start with intake and exhaust, custom tuning. Refer to the sponsor list on the right ----> for good tuning options.

 

Tune would be the 1st thing i spent my money on...You wil be suprise at how big a difference it will make.

 

Bolt on a lqx, tune, headers and cam

 

Thanks guy really have gave me some good ideas to look into and add on. thanks again for yalls help. im sure ill be back with more questions though sooner or later haha.


Thanks JD

 

What cam would you perfer(such as size and lift) and lifters,rods,springs and rocker arms...

 

Maybe I'm missing something, but would the answer be any different for a VIN Z 5.3L (L59) engine?

 

IIRC the L59 is a flex fuel engine