The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Passenger exhaust manifold question on my 86 350 with newer gen heads

lbrowne · 03-29-2015, 03:15 PM

I've got to get around to fixing this soon. A few years ago I put a set of rebuilt heads on my 86 that apparently came from a early 90s 350.

Truck runs like a top without issue, but one thing I never fixed was that on the passenger side head - the original exhaust manifold lines up except for the very rear bolt hole by the firewall. All the manifold bolts are straight across, but if I recall correctly, the rear bolt hole in the head is lower than the rest.

So obviously I get exhaust noise.

Not sure if this makes sense? I'll try to get a pic posted.

03-29-2015, 03:15 PM	#1
lbrowne Registered User Join Date: Feb 2011 Location: Alberta Posts: 144	Passenger exhaust manifold question on my 86 350 with newer gen heads I've got to get around to fixing this soon. A few years ago I put a set of rebuilt heads on my 86 that apparently came from a early 90s 350. Truck runs like a top without issue, but one thing I never fixed was that on the passenger side head - the original exhaust manifold lines up except for the very rear bolt hole by the firewall. All the manifold bolts are straight across, but if I recall correctly, the rear bolt hole in the head is lower than the rest. So obviously I get exhaust noise. Not sure if this makes sense? I'll try to get a pic posted.