I would like to upgrade to lt4 springs, what do i need and where should i get them from.

 

Springs, retainers and seats. Could be had from any GM dealer.

 

GMpartsdirect.com has them for a good price

 

are these the lt4 springs? 12551483 that everyone uses?

 

That's the ones I got

 

Scoggin Dickey Parts Center is always a good source for LT1/4 parts. They have everything for the LTs in stock.

Also, I ran a 12.44 @110.18 today with the Hot Cam, springs and 1.6 RRs w/ PCMforLess programming (engine only) in my 97 LT1 Z28. I think the Hot Cam is a really great performer for most LTs, as some people go with too much cam.

 

those are some good times.