For the more street minded folk, I've always liked this combination.
Stock block 455 on pump gas. Makes good power and torque numbers, and the peak isn't crazy rpm either.
https://youtu.be/y2rpyzu2vSM
Here are the dyno numbers
https://youtu.be/sp-RfWvmDZA
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2019 Pontiac Heaven class winner
https://youtu.be/XqEydRRRwqE