Discussion Starter · #1 ·
After doing the rebuild on my big bear 400, I was doing some piston comparisons and wanted to get some feedback or thoughts. I have redone a couple of Raptor/warrior 350 engines in the past and kept all the old parts. Comparing the pistons on the raptor 350 and big bear 400, the only noticeable differences are the crown on the 400 piston is cut different and the side skirts are a bit longer on the 400 piston. I'm curious if a raptor 350 piston would work on a big bear 400. There are a lot of compression options on the raptor 350 as opposed to the big bear 400. I'm curious if anyone has experience with this situation . I'll post some pics soon of the pistons. Thanks for everyone's time.