Emission exempt Exhaust Manifolds?

[csdineley]

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

[Captkaos]

TBI motors didn't have AIR injection...

[csdineley]

Mine does? And from all the reading I've been doing lately on the subject. Seems most TBI's did.

[csdineley]

Here's my Emissions Sticker:

[Jason S]

I posted some links that may help some. Do any of the manifolds in the links look like what you have?

If the manifolds you bought are indeed 88-95 C/K 350 manifolds, then they will fit the 350, the issue is where the exhaust manifold bolts to the exhaust pipe.

Clearance issues may arise.  It appears that you have a 2WD, so you shouldn't have to worry about the exhaust trying to clear the front driveshaft or other parts but I can't definitely answer one way or another.

87-91 R/V 350 Driver Side:
http://www.dormanproducts.com/p-18277-674-231.aspx?year=1987&make=CHEVROLET%2520TRUCK&model=R20%2520PICKUP&engine=V8%2520%252D%25205%252E7L%2520%2528350%2520CID%2529%253A%2520GAS%253A%2520FI%253A%2520N%253A%2520K&parttype=Exhaust%2520Manifold

87-91 R/V 350 Passenger Side:
http://www.dormanproducts.com/p-5606-674-158.aspx?year=1987&make=CHEVROLET%2520TRUCK&model=R20%2520PICKUP&engine=V8%2520%252D%25205%252E7L%2520%2528350%2520CID%2529%253A%2520GAS%253A%2520FI%253A%2520N%253A%2520K&parttype=Exhaust%2520Manifold

88-95 C/K 350 Driver Side:
http://www.dormanproducts.com/p-16170-674-157.aspx?year=1992&make=CHEVROLET%2520TRUCK&model=C1500%2520PICKUP&engine=V8%2520%252D%25205%252E7L%2520%2528350%2520CID%2529%253A%2520GAS%253A%2520FI%253A%2520N%253A%2520K&parttype=Exhaust%2520Manifold

88-95 C/K 350 Passenger Side:
http://www.dormanproducts.com/p-30153-674-156.aspx?year=1992&make=CHEVROLET%2520TRUCK&model=C1500%2520PICKUP&engine=V8%2520%252D%25205%252E7L%2520%2528350%2520CID%2529%253A%2520GAS%253A%2520FI%253A%2520N%253A%2520K&parttype=Exhaust%2520Manifold

[csdineley]

yeah, the one's I got. Look like the 88-95 one's. Here's a bad picture.