hi my name is andy i was looking for some advice and info. i have a 2007 gmc sierra southern comfort conversion 4x4 with 4 in fabtech lift 35 12.50 nitto tires on 18 in pro comp rims im looking to up my horesepower and was asking for advice ive been told change the cam and headers and supercharger. id like to build this engine id like to buy a regular new crate motor or if i could find a good used low mileage 5.3 or 6.o and do the rest myself . any info or sites would greatly be appreciated . this is a project that i can take my ntime and build over the course of the year no hurry. and i drive my baby once a week. it only has 39675 miles on it . it might sound extreme or crazy but i want to take my time do it right with my son thanks.

 

You need to spend about twice or three times as much time researching on here vs. the time you want to take building it. There is tons of info on here to answer just about every question you have if you search in the appropriate section.

First you need to have a goal, a direction. This isnt a daily driver so how radical do you want to get? How much hp and tq do you want to make? How much money do you want to spend? Once you have answers to these questions start researching to see what others have done that has worked to get you to your goals and go from there.

Lastly, welcome to the forum!

 

get a 4L80E transmission

 

The poster above me is correct and I agree with his points. These are all neccesary pieces of information. Also what do you plan to run for fuel, I am not sure of your location so it is tough to tell what you may have available at the pump.

 

First I would start with some gears to make up for those tires and then like mentioned, research, research, research.
I have been throught alot of this stuff so if you have any questions feel free to ask.

 

Exactly as others posted, goals need to be figured out before build plans. Otherwise, you are spending money and labor on parts that may not meet you're expectations. Let us know what you want to achieve first.