Transgo shift kit
Here are all the 2012 threads on the HD2 kit:
https://ls1tech.com/forums/automatic...questions.html
https://ls1tech.com/forums/automatic...d2-yes-no.html
https://ls1tech.com/forums/automatic...hift-kits.html
https://ls1tech.com/forums/automatic...shift-kit.html
Ted.
I can think of two way to test:
1. After dropping the pan and filter, remove the 1-2 accumulator (just 3 bolts);
The HD2 has a unique spring setup for the 1-2 accumulator.
2. Remove the boost valve and measure its diameter; also note if a thick spacer washer is added to the housing. This is not a certain test since other boost valves would have similar properties.









