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.

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