Official NBS 4.3v6 to GEN 3 V8 swap Guide

[b18c1turboedek]

I have a few questions. Im in the middle of the swap right now, after putting everything toghter we went too install the torque converter bolts, the motor was locked. We figured out the torque converter was hitting the flywheel. We removed the tranny and motor spins fine.

I used the 4l60E that was bolted too my 4.3 motor, i also used that converter. What flywheel am i suppouse too use? The 4.3 flywheel bolts are off center on the 5.3 motor. Any help would be apprciated.


Also the DBW is their a write up on that anywhere, i searched. Problem there is the truck was cable before, but the swap i bought is DBW, i looked under the dash how doo you remove the old pedal? can i just cut it out and bolt the DBW one up?

[zebra]

use the 5.3 flexplate & make sure it's on the right way. i don't think they'll go on backwards, but there's no harm in checking

[b18c1turboedek]

use the 5.3 flexplate & make sure it's on the right way. i don't think they'll go on backwards, but there's no harm in checking

Do they have diffrent style 5.3 flex plates? The one that was on the motor looks a litte flat compared too the 4.3 one. Also where the Converter goes into the motor, the hole isnt as deep as the 4.3 motor does that matter?

[zebra]

yeah. don't compare it to the 4.3 stuff - they're gonna be different. as far as i know, the ls truck engines used the same flexplate from year to year (specific to the transmission, obviously). you'd get some clearer info from somebody who's worked with automatics - which is pretty much everybody else here