440 problems/quenching?/advice needed

"440 - 1978 block.

FROM WHAT I HAVE BEEN TOLD~~~

it is a stock stroke with a 20/20 crank
stock rods
aftermarket flat top pistons (.030) WITHOUT VALVE RELIEFS
ZERO DECKED....
I have 516 close chambered heads from a 1967 383
fresh valve job with very little porting done
springs to match the cam
STOCK VALVE ROCKER ASSEMBLY... I know..
Weiand dual plane intake
750 edle carb

Cam specs~~~
Mopar performance .528 purple mechanical camshaft/ I measured this lift to be correct.
Didn't calculate the duration.."