Cold air box.

Fathead Racing

Well Known Member
Supporting Member 7
Does 20"X 20"X 4.5" sound like enough plenum volume for a dual quad air box sealed under the hood to the Ford F600 hood scoop?
 

rstreet

Well Known Member
Supporting Member 17
Ray should I bring a scientific calculator to Thompson so you can obtain the answer
robert
 

jim_ss409

Well Known Member
Supporting Member 5
Does 20"X 20"X 4.5" sound like enough plenum volume for a dual quad air box sealed under the hood to the Ford F600 hood scoop?

Sounds like plenty to me. I think it's going to work really well.
I modified a roasting pan to make a cold air setup for my 62 Impala a few years ago. Here's a post with a picture. http://www.348-409.com/forum/showthread.php?t=5436
It worked great but I had to jet up a size or two to take full advantage of it.
From what I've read the ram air effect isn't all that important. The main thing is to pull in the cooler outside air.
 
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