so i got a 96 4l80 to swap into my 99 nbs gmc sierra 4x4. who makes a adapter to run my stock transfer case??? and is there anything else i need besides wiring adapt and driveshafts?? THANKS
 Senior Member
 
					
					
						Senior Member
					
					
                                        
					
					
						so i got a 96 4l80 to swap into my 99 nbs gmc sierra 4x4. who makes a adapter to run my stock transfer case??? and is there anything else i need besides wiring adapt and driveshafts?? THANKS
You will need to modify your crossmember and get your PCM flashed with 80e programming. Also if running the 80e converter you need a different flexplate.
2002 ECSB 2WD 5.3
1995 Formula Firebird 383 LT1
1984 Camaro 408 SBC
Most sports require one ball, motocross requires two.
Racing isn't a matter of life and death, it's much more important than that.
 Big dreams small pockets
 
					
					
						Big dreams small pockets
					
					
                                        
					
					
						Look on silverado SS. There's info in where to get that adapter
Slowest in Oklahoma...