Thanks for that info. I think the factory compression ratio for this engine is 8.0:1.

I agree that porting, intake, etc can help with efficiency as much as power. It just all takes money, and I just don't have the discretionary funds to put into something that I use on a very limited basis. This build is already costing me way more than I was hoping for. My machine work is already in the $700 range and the rebuild kit is $550. I know this is still fairly cheap for a 7.4 rebuild, but regardless of good intentions it all takes cash.

Here is the rebuild kit I purchased: http://www.mabbcomotors.com/catalog/..._1980-1990/840