[GlennCMC70]

where does the cooling air for the rad come from on 82-92 Camaros as delivered from the factory - front or bottom?

[1meanZ]

mostly good info, and some mis-info here. Here is the exact facts.

Camaros:
82-83 Z28s with the LU5 engine option (crossfire injection) came with a composite hood with functional air induction scoops at the end of each hood vent. These opened under WOT just like the old cowl induction chevelles. The scoops feed directly into a square hole in the air cleaner housing between the throttle bodies. When the scoops are open outside air can rush directly into and come in contact with the filter elements themselves. I would call this about as close to ram air as it gets from the factory, but thats my opinion. here is a pic.
(IMG:http://i176.photobucket.com/albums/w178/1meanz/crossfirepics.jpg)

There were 84-87 Z28s and IROCs equipped with the L69 (305 HO 190hp) dual snorkel air cleaner ducting. This consists of a normal round air filter housing with a snorkel feeding each side. The snorkels mount to the core support and draw from above the headlights. Some people say this is junk, others insist otherwise. GM offered this complete setup as a performance improvement with the ZZ4 crate engine they offered as a direct replacement for the HO 305, so apparently GM thought it improved performance. I'm sure its 3980457x better than the open element hot air suckers most guys use on carburated or TBI engines. Here is a pic of said dual snorkel setup. The mid 80s carb'd Mustang GTs had something similar...
(IMG:http://i176.photobucket.com/albums/w178/1meanz/camaroengine.jpg)



Firebirds:
The Pontiacs are much eaiser to describe. TAs came with what some guys call the 'power bulge' hood. It is the asymmetric bulge off to one side of the hood. This was on TAs from 82-84, and on Formulas until 92. On the LU5 (crossfire injection) and L69 (305 HO) had a functional scoop at the back of the bulge. This opened at WOT and fed the square hole on the LU5 just like the camaro. The L69 powered TAs have a round hole in the lid of the air cleaner that meets the hood for fresh air. This would be more of a cowl induction instead of a ram air, but it is fresh air none-the-less. here is a pic.
(IMG:http://i176.photobucket.com/albums/w178/1meanz/TAramair.jpg)

This post has been edited by 1meanZ: Nov 5 2008, 01:36 AM

[trackbird]

Firebirds:
The Pontiacs are much eaiser to describe. TAs came with what some guys call the 'power bulge' hood. It is the asymmetric bulge off to one side of the hood. This was on TAs from 82-84, and on Formulas until 92. On the LU5 (crossfire injection) and L69 (305 HO) had a functional scoop at the back of the bulge. This opened at WOT and fed the square hole on the LU5 just like the camaro. The L69 powered TAs have a round hole in the lid of the air cleaner that meets the hood for fresh air. This would be more of a cowl induction instead of a ram air, but it is fresh air none-the-less. here is a pic.
(IMG:http://i176.photobucket.com/albums/w178/1meanz/TAramair.jpg)

That's the one I was thinking of.