Ready to purchase pistons. Need some advice on flat vs dished pistons. Looking at ta forged flat tops or spherical dished, and autotech flat and dished pistons. Engine will get ta stage 2 se heads when cash permits, will not be run without. Will be 99% street driven. Engine will be decked as needed for cleanup and compression. Mostly curious about quench area with dished pistons. 91 octane mostly in my area. Dcr will be used in determining cam choice. Thanks for going over this with me. Josh
I believe that's an NBA team in Detroit.. You need to pick a power point and camshaft. Sounds like the 22cc dish is what you want with 91 octane.
I did some quick basic numbers. On stk stroke 4.350 bore, 4.380 gasket hole, .040 gasket, piston .010 down, with 65 cc heads Dished pistons about 22 cc is about 10.56:1 Flats pistons with about 8cc us about 12.13:1
See my post #3, http://v8buick.com/index.php?threads/470-rod-specifics.331999/#post-2787954 You want zero deck. Order the pistons with the compression distance necessary to get there once the machine shop cleans up the block decks and measures the height. Then you can order the dish/valve reliefs ccs to fine tune the compression for the cam you want to run.
