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by stoweby
Wed Oct 17, 2018 12:36 pm
Forum: GM Performance Forum
Topic: L31 Engine
Replies: 0
Views: 10251

L31 Engine

I have a 1990 C1500 that I will be doing an L31 engine swap on soon. The donor vehicle is a 2000 C3500 VIN 1CGC34R1YR164395. I have heard that some of the 5.7's came with a forged steel crank and I was curious as to whether my donor vehicle was one of them. Any help would be greatly appreciated.