That was, what...a high-squeeze drag motor running avgas or race fuel (or alky), probably with a tunnel ram or a high-rise intake and a Dominator, cam that idles at 1700rpm, and big-tube open headers?
I can't imagine that was in any way a street engine.
E85 was the fuel with a 950 Holley that had a clean idle around 900 rpm and 1 7/8” step headers but it doesn’t matter the heads still made the power, you don’t get that for $850 with a pair of china’s **** heads….