98 chevy 4.3 to 6.0 swap help!

[00_shortbed]

Ok ive got a 98 chevy truck with a 4.3 and auto trans that i wanna swap for a 6.0 and 4l80 out of a 2500. im gettin the engine, trans, wire harness computer all together. Im gonna drop the motor and trans in no problem but the wiring i need a lil help with. My question is how to connect the engine harness to the truck cab connection, im guessing i need to connect the proper wires to the cab or sumthin?? does anyone have a pinout of the harness that come out of the cab?? Or can at least guide me in the right direction. Plz bear with me im new to the swapping!

[LS1GMCTruck]

Ok ive got a 98 chevy truck with a 4.3 and auto trans that i wanna swap for a 6.0 and 4l80 out of a 2500. im gettin the engine, trans, wire harness computer all together. Im gonna drop the motor and trans in no problem but the wiring i need a lil help with. My question is how to connect the engine harness to the truck cab connection, im guessing i need to connect the proper wires to the cab or sumthin?? does anyone have a pinout of the harness that come out of the cab?? Or can at least guide me in the right direction. Plz bear with me im new to the swapping!

1996, 1997 & 1998 were transition years for GM trucks. In other words, each of these year trucks had different wire codes. Simular, but different. You need to get you a set of the "GM" brand Service Manuals for your 1998 truck. All the wire codes are in them, and, contrary to belief, is very easy to follow & understand. I bought mine used, on E-bay. They are usually still in very good to excellent condition, and reasonable to buy. You will find that they will come in handy for ALL your questions about your truck.

[ChevyLee]

I love my 98rcsb with a ls2 iron block/80e trans.

[LS1GMCTruck]

Ok ive got a 98 chevy truck with a 4.3 and auto trans that i wanna swap for a 6.0 and 4l80 out of a 2500. im gettin the engine, trans, wire harness computer all together. Im gonna drop the motor and trans in no problem but the wiring i need a lil help with. My question is how to connect the engine harness to the truck cab connection, im guessing i need to connect the proper wires to the cab or sumthin?? does anyone have a pinout of the harness that come out of the cab?? Or can at least guide me in the right direction. Plz bear with me im new to the swapping!

Where did you go? Hows the truck coming along? Any other questions, feel free to fire away! We like doing swaps, lol...