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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: jon.fyock.7 on August 02, 2016, 01:03:36 am

Title: Vacuum lines
Post by: jon.fyock.7 on August 02, 2016, 01:03:36 am

85 c30 454vid in the process of removing the double smog pump set up.can I use a vac schematic from 80 81 or do I have to go earlier.should be distributor,pcv,breather flap,exhaust flap .am I forgetting anything ? What vac ports to what? Any comment appreciated.

Title: Re: Vacuum lines
Post by: zieg85 on August 04, 2016, 05:54:31 pm

Don't quote me but I think I remember reading where one is a smog pump and the other is part of the EGR