Mrcallison

Ok so I have a 98 LS1 complete with harness and ecm from a camaro. I want to drop it into my 01 GMC Sierra it has a 4.3l. I also have 4l60e for both engines. I have a few questions, anything helps. Will my wire hareness be an easy plug and play? Do I need to delete the VATS in the ecm? can the 4l60e trans work with the ls1 or do I need to replace the trans as well? also looking for front accessories and headers. Any body can tell me what brackets and headers to use on this swap?

brandon6.0

iTrader: (32)

you will probly need the accessories for the ls1 to work. any 99+ truck v8 headers should fit. the v6 trans will work with a crank spacer between the flexplate and converter. like $40 on summit. and u will need to oblong the flexplate holes for it to bolt up. Not a hard task.

It will need tuning and u can do away with vats etc. Harness will most likely need to be made standalone. u can use lt1swap for the diagram and how to on this. U will need motor mounts as well. Should be a straight forward swap tho. PM me if u need any help.

this should cover everything. http://www.performancetrucks.net/for...-guide-378643/

Mrcallison

Thanks