This post is for advice on whether to spend about $450 just to improve quench.
I disassembled a 360 short block I built 30 plus years ago to clean it before finishing it and putting it in my 1970 Dart. I didn’t think of quench back then and put H405P flat pistons in it that are .050 in the hole and about 9.5 to one. I’m fine with the compression but realize I can do better with KB232 quench domes. They calculate to be .012 in the hole and still about 9.5 compression. I have home ported J heads milled to 59 cc. They are not heart shaped and so still have significant room in the chamber for the quench dome. Is it worth it to swap out the pistons while I have it apart? Goal is a great running street engine for 93 octane. I’m using a MP P4452992; hydraulic flat tappet 238,238 at 50, .474 lift, 110 lsa.
