Another slow 340

Chris,

I'm running 10.2:1 with a Lunati 60401 cam (213 @ .050) cam here and have no problems with detonation in a 5600 lb full time 4WD truck w 3.55 gears and 33x12.5 tires. There is no air here, lol! With that big of a cam, you need way more compression and a more agressive profile cam. We also need to check out your advance curve.

Please bud, let me help. I'd be happy to meet you at your shop and let you drive my truck. Let's go for a blast. Heck, I want you check out the tranny perfomance anyway. It's awesome thanks to your advice!

Most people don't understand that we have no air here, it's natures "anti-supercharger" :)