Looking for smog parts for 1977 gmc c25 w/454

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jonbgood

Junior Member
Joined
Nov 21, 2024
Posts
16
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7
Location
east bay area , California
First Name
Johnny
Truck Year
1977
Truck Model
c20
Engine Size
454
I can not seem to find a Egr valve for this year and engine size. The ones I find look similar or exact but my year isn’t listed or says not compatible. Does anyone know of a comparable that will function properly? The original part number is
GM 17094028

Also need a diverter valve, anyone got one?
Thanks for any help locating these items.
Damn California smog emissions ‍
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