Heat riser direction placement question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

92470 · 07-04-2007, 07:28 PM

Hi, I have a 71' Cheyenne with a 350 SB that I am installing a stock heat riser on. Can anyone tell me if the couterweight and spring assembly on the heat riser is supposed to be on the front side of the manifold or the back when you install? You can bolt it up both ways, but I'm not sure which is right, and I can't find a picture. It's pretty easy to tell top and bottom, but front and back is confusing. Can anyone help me? Thanks

jhow66 · 07-04-2007, 10:49 PM

Turn it to the outside. That way you can tell if it is open or shut.

92470 · 07-05-2007, 01:20 PM

Would bolting it up with the assembly on the outside have been as it was from the factory? I thought it was either facing the front, or the rear?

I'm sure it would work either way, but does anyone have a pic of one installed as original or know if on the side is correct? Replacing all of this is a pain, and I just want to make sure I do it right the first time! Thanks!

**john** · 07-05-2007, 01:24 PM

Quote:

Originally Posted by jhow66

Turn it to the outside. That way you can tell if it is open or shut.

You could always reach it from the outside to see if it was free. Never saw one turned in.

Zeke · 07-05-2007, 07:11 PM

Mine was installed angled to the back when I got the truck. don't think it was ever off from the condition of the exhaust system and the fact it was stuck partly closed.

07-04-2007, 07:28 PM	#1
92470 Registered User Join Date: Nov 2006 Location: Maple Grove, MN Posts: 149	Heat riser direction placement question Hi, I have a 71' Cheyenne with a 350 SB that I am installing a stock heat riser on. Can anyone tell me if the couterweight and spring assembly on the heat riser is supposed to be on the front side of the manifold or the back when you install? You can bolt it up both ways, but I'm not sure which is right, and I can't find a picture. It's pretty easy to tell top and bottom, but front and back is confusing. Can anyone help me? Thanks

07-04-2007, 10:49 PM	#2
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	Re: Heat riser direction placement question Turn it to the outside. That way you can tell if it is open or shut. __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

07-05-2007, 01:20 PM	#3
92470 Registered User Join Date: Nov 2006 Location: Maple Grove, MN Posts: 149	Re: Heat riser direction placement question Would bolting it up with the assembly on the outside have been as it was from the factory? I thought it was either facing the front, or the rear? I'm sure it would work either way, but does anyone have a pic of one installed as original or know if on the side is correct? Replacing all of this is a pain, and I just want to make sure I do it right the first time! Thanks!

07-05-2007, 07:11 PM	#5
Zeke Active Member Join Date: Jun 2002 Location: L.A. Lower Alabama Posts: 453	Re: Heat riser direction placement question Mine was installed angled to the back when I got the truck. don't think it was ever off from the condition of the exhaust system and the fact it was stuck partly closed. __________________ 1969 C10 350 3spd 1995 GMC 3500 XC 350 dually When Thomas Edison worked late into the night on the electric light, he had to do it by gas lamp or candle. I'm sure it made the work seem that much more urgent. George Carlin



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