Not exactly going to be a pulling tractor, but plan to do plow days and maybe a local deadweight pull. With that in mind, and also knowing that I want to run premium 93 octane pump gas or less, please let me know your thoughts. I am planning to rebuild engine now that I made up my mind what I want to do (I've bounced several ideas around for a while). My plan is just a solid rebuild.....redo head, bore block, etc...etc... I also plan to get a reground cam from Blackburns. I am not going to stroke it, but as a way of giving it a bit more power, I want to lengthen the connecting rods to raise compression. That's where my question is. What compression ratio can I shoot for that runs on 93 octane or less and doesn't cause any other troubles? Again, not going for an all out puller, just a little more stout of a B. Thank you in advance.