Originally Posted by
Pipeline Mechanic
There is not much of a comparison between the two. The I-6 just makes EVERYTHING simpler. More power, better fuel economy, more reliability etc.
What you will need to find to make your life easier is a Gruman Step Van that had a 4BT and get the flywheel housing from it. It makes the Chevy conversion a bolt up job other than engine mounts. You can buy them or fab them yourself. I traded my 95 Chevy with the brand new engine and ALL issues resolved for a wrecked non drivable Dodge 3500 with a 12v and I feel like i got the better end of the trade. ;) I have done conversioons in the past if you need any moral support or encouragement, email me.