4 bolt mains means it's most likely out of a C/K3500 1 ton truck or van. What year is it? Casting numbers on the heads and block?
Since you have an 83 there is a good book that gives you step by step how to. It's dated material, but so is your truck and engine so it is just what you want.
jagsthatrun.com
jagsthatrun.com
Since you have an 83 there is a good book that gives you step by step how to. It's dated material, but so is your truck and engine so it is just what you want.

Intro: Chapter 1 from the S10 V-8 Conversion Manual (14th Edition)
We will get to all the variations and nuances, but let's start with the simplest version of the story. A Camaro V-8 engine fits into an S10 w just a few changes


V-8 Conversion Manual for Chevy S10 Trucks
Overview: Illustrated guide of over 200 pages written by Mike Knell shows how to install a small block Chevrolet V-8 into 1982-2003 Chevrolet S-10 trucks. This book also contains a short chapter on the V-8 swap into the New Body Style. Feedback from customers over the last 9 years have led to...
