Slant 6 bolt on's!

I'm putting my 2¢ worth in with the guys who say mill the head and bigger exhaust, at least for starters.

If your /6 is a 72 or newer, you have the hardened valve seats for unleaded fuel. Otherwise, I suggest adding hardened valve seats while the head is off.

A number of Dan's links are to a site called SlantSix.Org. These guys are hard-core, dedicated proponents for keeping the leaning tower of power on the road. I've learned a lot and scored a true roller timing chain through them.

In looking at aftermarket intake and exhaust systems, suggest you insure that you have a way to heat the intake under the carb. Here in the Hotter'n Hell Never Ending Summer @ the Edge of the World, it's not all that necessary. I've been through some Wisconsin winters. It's very necessary unless you like DieHard testing.