NHRA 2020 Rule Amendment SS Intakes???

[bert powell]

Originally Posted by Jeff Niceswanger

Exactly how do you do that with a sheet metal intake (and there are no plates) ?

You are exactly right Jeff, sheet metal intake would cover it up. So the rule of not cutting into the valve cover bolt and angle of +/-2 degrees would put some parameters to the rule.

As for it being legal per the rulebook, the no external modifications wording makes it illegal. Also, isn't there a sentence somewhere in rulebook that if it doesn't say you can do it, then you can't? Not sure about that but recall something like it.

I looked at a bbc head last night and roughly calculated the 50-60cc number using 1.75"x2"x1" but the port is oval not rectangular. So it would not be that big but bet it is 30-40cc. The advantage would definitely be bigger for bbc verses sbc.