[Tom Vaught]

Holley Carb Air Density is a big deal (but also is Holley Carb "physical skin temperatures").

Back on Post #186 I posted a couple of pictures of the old Pontiac Trans Am 301 engine with the "301 cid Draw Thru Turbo/Rochester Carb" induction system. The Rochester Q-Jet carb basically saw the same Carb 'Metal Temperatures' in Boost Mode as the normal 301 naturally aspirated carbs.

But today, people are not using boost systems with carbs on the inlet side of the turbo(s) very much because you need a "Carbon Face" seal on the compressor side of the turbo to keep the carb fuel from migrating into the engine oil (past the turbo shaft into the CHRA assy and then into the oil pan).

So many people have gone to Holley "Blow Thru" carb turbo systems.

We have discussed air inlet bonnets in the past and a bit of discussion on "inter-cooling the air before the carb" to increase the charge air density caused by the Boosting Device (turbo or centrifugal supercharger) working with an inter-cooler system.

Pic #1 is of a typical water tank and remote mounted inter-cooler located somewhere in the vehicle and connected to the inlet plumbing to the Holley Carb Bonnet.

The other 4 Pics will show a well designed "self contained" 'drag racing inter-cooler' that does multiple things:
1) It stores the cooling water and ice cubes internally vs use a remote tank and a separate pump to feed cooled water to the inter-cooler.
2) It distribute the air flow evenly to the water cooled inter-cooler on the inlet and exhaust side of the device.
3) It cools the transmission cooler which is also contained inside the water to air inter-cooler tank.

It just takes up a lot of space where the normal passenger seat would be but it also balances the car offseting some of the driver's weight.

Enjoy.

Tom V.