I want to know how much extra hood clearance I'll need.

 

Just enough "extra" to close the hood.

You'll need a drop base air cleaner.
The best one is the one origionally used on 1967 to 1970
Chevrolet performance cars.
It was disigned to fit camaros and vettes with hi perf sb's and
big blocks of the era.
You can still buy it or just the base from

http://www.noahperformance.com/Restoration.html

or a ram aircleaner from http://www.ramairbox.com/
These are far superior in fit and flow than the common aftermarket aircleaners. even K&N

search this thread for pics

https://www.thirdgen.org/techbb2/sho...&highlight=L88

 

a standard performner is about 3.6". You need to come up with about an inch somewhere.

 

I have the Victor Jr. Vortec intake and a Demon 850DP with a 3" air cleaner and it fits nicely under my 4 inch cowl.

 

If its the same height as a performer RPM, it'll fit fine.

 

I was just checking the dimensions of the intakes in the PAW catalog. I have the Super Victor #2913 and it shows a CH of 5.63 inches. They show a CH of 4.58 inches for a Victor Jr. # 2975

 

im runnin a victor jr and a demon on top and right now i have a smaller air cleaner bc i cant afford a cowl hood yet but it fits under there its puhsin it though. the air cleaner is prob about 3 inches. but it needs a bigger air cleaner the victor jr aint as tall as everyone thinks. when u see it its not so tall.

 

For the Victor Jr.'s get the dimensions for the part number you are going to use as the height varies.