69 z/28 heatriser

**302moz** · #1 10-21-2017, 04:17 PM

What is the GM part number for the exhaust heat riser valve for a 69z/28? thanks

Rick99 · #2 10-21-2017, 08:33 PM

I have it listed in my notes as 3887023. Maybe somebody can confirm this. It's always nice to have a few opinions just to make sure.

**Mr70** · #3 10-21-2017, 08:51 PM

Yes,#3887023.Used on nearly everything notable back then.

**302moz** · #4 10-23-2017, 12:53 AM

Thanks

**jdv69z** · #5 10-23-2017, 07:21 PM

Here's a couple pics of mine. Oct 68 build 69 Z.

**John Brown** · #6 10-24-2017, 01:20 AM

You can't rely on the number cast on the weight to definitively identify a heat riser. That weight was used on some big block heat risers too. Maybe not all of them, but some.

The Following User Says Thank You to Mr70 For This Useful Post:
Rick99 (10-22-2017)

Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars.