I painted my block 20 odd years ago. I used standard acrylic to paint the rocker covers and' from what I remember', just regular type acrylic to paint the block due to the limited range of VHT colours.
From what I can see there is no discolouration anywhere on the engine even around the exhaust ports.
Has anyone else had experience using more regular type paint on their block? Could I be remembering this correctly (the enamel)?