block I.D. help

[elcamino]

btw

The fact it had a Holley had nothing to do with being anything special, like L78 or LS6 engines for example. Hollly, Rochester, Bay City were just OEM carb suppliers at the time.

Note-1966 327-275 hp engines were like this also, the Holley and Rochester used different intakes on the small block and likely the big blocks, although I did have a 1966 Impala SS 396 back in 1966, I do not know what kind of carb is had and can't recall ever removing the air cleaner. Traded car in on 1970 LS5 in 1970.

Must have been shortage of the new Q-jet to meet demand as it was only in 1966 that Holley was used like this. It was just on the high-perf engines in other years.