CarlsonMotorsports
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CarlsonMotorsports (or whoever else wants to respond): In thinking about your response some more, how much is typically machined off the block deck and head of Animal to build a WKA legal stock? I understand it's going to vary from engine to engine when building to a certain spec, but generally how much is machined off? Why I ask is I'm thinking that would be the main difference between the Animal I built (which was a WKA legal stock) and doing the same thing to an LO206.
Typically, very little is machined off of the deck of the block. You are allowed to have +.005" piston pop-up with a WKA animal, so you want to get as close to that as possible. If you start with an animal block from the factory, you will have to machine the deck considerably (.005" - .015.") I start my animal builds with a factory certified 206 and build from there. The reason is that often times I get a block with positive piston pop-up right out of the box, which then requires no further machining. Now, if the 206 block has the piston in the hole, we'll set it up in the mill and take a few thou. off.
The cylinder head will require anywhere between .010" and .015" machined from the gasket surface. That is a considerable amount of increase in compression, but even still, it is nothing like the increase you get from a domed piston. Do the machining above, and add the domed piston, and you've got some real bark, yet reliable combination.