Did that in the 60's-70's. Common practice. On my 67 Dart had to do that because the air cleaner was rubbing the hood frame.
Does it help ? can't say for sure. Does vent under hood temps.
Did that also on my 71 Nova and 72 V8 Vega. On the Vega I just had to pop the hood and leave it hooked on the safety latch because it opened at the windshield. Like you said, a very common practice back then. :thumbsup:
