Glad to help out. I was going to go with a 6 speed, but my left knee is so so, my other car has a V8 and 6 speed so I went with the 4L65e.
Umm, a GM Tech, I may have to pick your brains in the future.
Spencer MA, been there in the past. I’m originally from Wareham, then moved to Pembroke on the South Shore. In 2016 we moved to NM.
I bought the alternator and the bracket from Summit.
The bracket is for the truck engine, you can see below the harmonic balancer sticks out a lot further than the LS3 one. I shortened the spacers to get the pulleys to align.
Here’s the info.
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