militaryjeep
Full Access Member
- Joined
- Mar 4, 2020
- Posts
- 127
- Reaction score
- 104
- Location
- chatsworth
- First Name
- steve
- Truck Year
- 1986
- Truck Model
- Suburban K20
- Engine Size
- 5.7
1986 K20 Suburban
Federal spec, no Cats / Dual Smog pumps / EGR / Quadrajet Carb (ALL STOCK)
Stainless factory exhaust manifolds
I have a Fed spec K20 with the dual smog pumps, EGR and Air injection.
The only thing the smog pumps do is shoot air into the manifold tubes
just down stream of the head.
I was changing belts and was unable to get the smog pump belt so I just
left it off as an experiment.
First driving impression was absolutely no difference in drivability or performance.
Any comments as to the long term effects of leaving the pumps disconnected?
Will it affect the temp of the manifolds or the EGR function in any negative way?
Looking for thoughts from the gallery....
Federal spec, no Cats / Dual Smog pumps / EGR / Quadrajet Carb (ALL STOCK)
Stainless factory exhaust manifolds
I have a Fed spec K20 with the dual smog pumps, EGR and Air injection.
The only thing the smog pumps do is shoot air into the manifold tubes
just down stream of the head.
I was changing belts and was unable to get the smog pump belt so I just
left it off as an experiment.
First driving impression was absolutely no difference in drivability or performance.
Any comments as to the long term effects of leaving the pumps disconnected?
Will it affect the temp of the manifolds or the EGR function in any negative way?
Looking for thoughts from the gallery....
