quote:
Originally posted by MARLIN JACK:
I've read some results of Dyno testing by "experts". The end data proved the difference between underhood/engine compartment, temperature air; and much cooler outside air... Is UP TO 10%. Period. Yes! On a 400 HP engine, add 40 HP when you add a cold air induction. I would believe that a big block engine will get more benefit from the MORE dense charge, than would a small block. Because it is all about volumetric efficiency and the fuel/air charge to compression ratio. More Cubic Inches, More results. I once rigged up a cold ram air carb inlet on a 1967 GTA Mustang fastback. It had the 390 FE Engine. You should'a heard the change in exhaust note and power, when driven on the Freeway on a cold winter Night. Marlin.
[This message has been edited by MARLIN JACK (edited 07-21-2003).]
[This message has been edited by MARLIN JACK (edited 07-22-2003).]
I read somewhere in a Holley book that for every 10 degrees drop in intake temp. you gain one horsepower. I had a ram air setup on a big block chevelle and it made quite a difference in power. One november night on the freeway in Salt Lake I actually froze the carb with a 1/4 of frost showing on the outside of the body. I had to disconnect the ram air tubes and wait till morning for it to thaw out.