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04-02-2008, 06:09 PM
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#1 |
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Registered User
 
Join Date: Feb 2006
Location: Sidney; MT
Posts: 172
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R.H. ram horn question
I am almost ready for exhaust on my 68 gmc 4x4 350 engine. after glass beading & painting my manifolds & installing new studs ,I realized my right ram horn has a flat surface by the studs. this must be for a heat rizer, should I get a heat rizer or try to find a manifold with the step for the donut? I will try to get progress pics up soon. thanks in advance for any help, Philip
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04-02-2008, 06:45 PM
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#2 |
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Registered User
Join Date: Feb 2007
Location: Cali Central Coast
Posts: 5,191
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Re: R.H. ram horn question
Mine's got a flat spot for the A/C bracket - I don't know about the heat riser.
__________________
'67 SWB Fleetside ZZ4/350/Tremec 5-speed/4link/Scott's IFS - and fun as heck! SOLD  Click here to support the board Philippians 4: 6-7 |
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04-03-2008, 03:36 AM
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#3 |
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Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
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Re: R.H. ram horn question
It is pretty easy to grind a 45 degree relief into the manifold. I use a iron exhaust manifold gasket to check the fitup of the gasket. It does not take long to make the relief and once made the manifold seals very well if you do a decent job of grinding.
The manifold does not have a relief because it was made for a heat riser. Jim
__________________
1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC |
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