Register or Log In To remove these advertisements. |
|
|
|
Thread Tools | Display Modes |
|
07-25-2012, 11:30 PM | #1 |
Registered User
Join Date: Feb 2012
Location: Morgantown, Wv
Posts: 294
|
Emission exempt Exhaust Manifolds?
Hello
Today I picked up some manifolds I found on CL. The ad claimed they were off a 89 Burb with a 350. But they are a different design then my 87 manifolds and have no A.i.r injection port or O2 sensor fitting. So after some searching I believe they're off a C/K 88-95 engine. So my questions, Will they work on my 87? To me it looks like I'll need a new y-pipe. And why don't they have the emission stuff? Thanks |
07-26-2012, 01:51 AM | #2 |
Registered User
Join Date: Apr 2009
Location: New Freedom Pa.
Posts: 1,335
|
Re: Emission exempt Exhaust Manifolds?
Most "Air injection tube" manifolds went away when fuel injection came along.
My 87 has the "O2" sensor in the left manifold but I think they switched it to the Y-Pipe after a few years. Desert |
07-26-2012, 02:19 AM | #3 |
Registered User
Join Date: Jul 2008
Location: Show low,az
Posts: 808
|
Re: Emission exempt Exhaust Manifolds?
My '89 Burb has the O2 in the Y-pipe.
__________________
1978 C10 Silverado Big 10 350/350.. play toy 1990 V1500 Suburban 350/700r4..Daily driver 1987 K10 Silverado 383/400.. Wife's rig WRECKED! 1989 V2500 Suburban 350/400.. SOLD! 1974 C10 Custom10 LWB 350/350.. SOLD! 1974 C10 Custom10 SWB 350/400.. SOLD! 1999 Silverado Z71 LS1.. Wife's rig WRECKED! On the hunt for a new project....... I'm a Chevy guy.....I'm just not a "NEW" Chevy guy. |
07-26-2012, 06:46 PM | #4 |
Registered User
Join Date: Feb 2012
Location: Morgantown, Wv
Posts: 294
|
Re: Emission exempt Exhaust Manifolds?
Ok, so did the 88-95 trucks not have the air injection system? Also you guys think they'll work if I also use a y-pipe from a similar year?
|
07-26-2012, 10:33 PM | #5 |
78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
|
Re: Emission exempt Exhaust Manifolds?
my 88 has both
lets see yours my others from 78-79
__________________
John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
07-27-2012, 09:16 PM | #6 |
Registered User
Join Date: Feb 2012
Location: Morgantown, Wv
Posts: 294
|
Re: Emission exempt Exhaust Manifolds?
Here's the ones I got the other day
|
07-28-2012, 01:20 PM | #7 |
78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
|
Re: Emission exempt Exhaust Manifolds?
guess i'd call that log style... seen some (air holes)filled "well" ,not filled new tho
__________________
John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
07-30-2012, 06:00 PM | #8 |
Registered User
Join Date: Feb 2012
Location: Morgantown, Wv
Posts: 294
|
Re: Emission exempt Exhaust Manifolds?
So think I could drill & tap the holes for the air injection and o2 sensor? Or remove the entire air system, which worries me. No smog test here for cars older then 1995 but they do a visible inspection for cars newer then 35 years old
|
07-31-2012, 08:27 AM | #9 | |
78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
|
Re: Emission exempt Exhaust Manifolds?
Quote:
if they hook up the same get a set for inspection time
__________________
John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
|
07-31-2012, 10:34 AM | #10 |
Registered User
Join Date: Sep 2009
Location: Weare,NH
Posts: 1,592
|
Re: Emission exempt Exhaust Manifolds?
Depends on how strict the visual inspection is. I have no emissions equipment on my truck thanks to the previous owner, hell the charcoal can is gone. It passes the visual check just fine. My 92 Honda has no cat and the inspection guy says nothing about that either.
|
07-31-2012, 09:38 PM | #11 |
Registered User
Join Date: Feb 2012
Location: Morgantown, Wv
Posts: 294
|
Re: Emission exempt Exhaust Manifolds?
Well I guess I hit up the junk yards and look for another set. My truck is mostly stock, and I'd kind of like to keep it that way, for the most part.
|
08-01-2012, 07:34 AM | #12 |
78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
|
Re: Emission exempt Exhaust Manifolds?
before you use them, clean out the bumps if they have them
it helps with sound/flow
__________________
John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|