Carburetor Heat Shield

**Mr70** · #1 08-14-2006, 06:13 PM

I believe so Howard,but exclude 1969.
This was new for ALL 1970 vehicles.
Again,they had to be sold brand new in those areas to receive that,regardless of where they were built.
The paperwork will reflect this RPO,as well as some revealing details on the original vehicle itself.
This particular carb. heat shield should not be confused w/the A.I.R. system.

**rubbinisracing** · #2 08-15-2006, 05:33 AM

Rick,

Thanks for the great info. I went an looked at 2 of my cars build sheets that were sold new in California and there it was "NA9". Just so happens both cars were built at Van Nuys and are "Special Paint" cars.

Thanks again Rick!

**rubbinisracing** · #3 08-17-2006, 06:20 AM

Rick,

Does an L34 70 Chevelle with the NA9 RPO code on the build sheet use a carburetor heat shield with the quadrajet carb.?

**Mr70** · #4 08-17-2006, 07:11 AM

Absolutely..it was not just for Holley equipped engines.
All 1970 Quadrajets used part #3969837.

3macs1 · #5 08-17-2006, 07:21 AM

Mr.70
Was the heat sheild and the charcoal canister system the only components of the NA9 RPO code or was there other components added.

**Mr70** · #6 08-17-2006, 07:28 AM

In addition to those two items,there was a seperator box mounted over the rear axle,special vented gas tank and gas cap,and a Special Carb with a fuel bowl vent pipe.
This system took the fuel vapors from the carb.and routed them to the charcoal cannister where they were then returned to the gas tank via the seperator.

3macs1 · #7 08-17-2006, 07:44 AM

Thank you Sir. I remember the animal now. We started to see them in I think around 71 in canada. I remember guys being scared to fill their gas tanks to the top to ensure fuel did not run back into the lines when they first came out here

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