High compression engine and pinging

[cppursell]

Originally Posted by Hottrucks

aircraft/race fuel would be best but very pricey.....this motor maybe a bit over built for street use I would consider putting in thicker head gaskets to drop the compretion as much as I could...9.5:1 is as much as most can stand on 93 octane without pulling a bunch of timing out of them maybe down as low as 8 to12*(OH boy I'm gonna get flamed for that) being old school and been though this I have used trany fluid to slow the burn down (ouch I'm going to get it again)

Alot is going to depend on what your going to use the truck for???

I'll try even lower timing for the heck of it. I have heard from another source that a few ounces of tranny fluid in the tank does work. I'll try that too.
This is my only vehicle and daily driver. My (stock) 350 got busted from an oil leak while driving, and this engine was the closest solution to getting my truck on the road again.