I have been searching for posts that may address my questions -- either no one has or I'm not very good at searching.

I'm putting a 5.3/4L60e from a 2003 Tahoe in a 79 Vette. I put in a Summit 8701 Cam, springs and seals. Other than some gaskets & seals, I didn't change anything else.

I will reflash the pcm and I'm trying to choose a bin that will be a good fit for me.

The Tahoe didn't have electric fans. It also weighs 3500 pounds more than the Vette. I think the shift points might need to be adjusted as well as the fuel maps. I was wondering if a bin for a C5 vette or maybe a GTO would be a better starting point.

If anyone could either give me their two cents or suggest how to search for that sort of topic, I would appreciate either.

Thanks