Mild 360 Magnum Build

Jadaharabi said

Back to the original post.
If using a magnum block, rod and crank and putting a la piston on it, wouldn't that give you a positive deck height.
I thought that the deck height on the Magnum was less than the deck height on the LA.

Click to expand...

The Magnum is nominally .015" lower. I am trying to think of any stock-ish LA pistons to fit in a 360 bore that would be positive deck with a Magnum deck but am drawing a blank... except for an early 340 which is positive over an LA deck height too. H116CP's would be .012 below a Magnum deck.

The pistons that the OP shows will be around .067" below the Magnum deck; not likely to have much quench effect. FWIW.. they are middlin' compression; dish volume is 11.2 cc for the FM cross-catalog part. SCR around 8.8 with standard Magnum heads and a tad higher with a .028" thick head gasket.... certainly better than the LA and LA heads.