13:1 Compression Pistons in 340 Small Block

Thank you so much, Finally someone that could answer my questions lol. I’m sure I’ll have to run higher octane then 93 which isn’t an issue. Only others think is I’m not sure what type of torque converter I’ll need. I have 3.55, 3.91 and 4.56 gears for the rear end, I was thinking the 3.91 gears. I definitely wanna “get-r-dun” but for real thank you so much!

Once you decide on a cam, then contact a converter manufacturer and ask them for a converter and gear recommendation for your combo...