[Matt Man]

Originally Posted by 83GMCK2500

Which style did your truck have? The one with the actuator mounted at the valve or the one with the actuator raise up near the valve cover?
Low style: P/N: 5234815, searchable with results on ebay.

I don't know which style it had hasn't had one since I have owned it. I might fail my re-test for smog so I'm trying to find one.

Originally Posted by MikeB

http://www.ebay.com/itm/like/3319480...&ul_noapp=true

https://www.gmpartsgiant.com/parts/c...e~5234815.html

I wonder what it would take to adapt an early model bi-metal spring-actuated heat riser valve?

I'm trying to find the exact original design to please the California smog lords. I am going to be re-doing the exhaust which will have the original manifolds so I want to put the efe valve back in which honestly makes a lot of sense to have anyway.