Exhaust Manifolds
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Joined: Mar 2002
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From: Kent, WA
Exhaust Manifolds
My exhaust manifolds on my 352 are cracked, and warped really bad, probably beyond repair. I went to the junk yard and found a set off of a FE motor. I'm not sure what they came off of though. What I am wondering is are the exhaust flanges different sizes in cars and trucks. I also have the heat riser on the driver's side, do those holes vary in size. I don't want to have to take them off, unless I have the right ones to replace them.
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Joined: Feb 2000
Posts: 3,565
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From: Sun River St. George
Exhaust Manifolds
The right side truck manifold is different than one for a FE car motor. The heat riser will fit and the manifold gaskets are the same on 352, 360 and 390 truck motors. Carefully inspect the ears on the junk yard manifolds, most will be cracked from over tightening to compensate for a worn gasket. Have good ones resurfaced, use new gaskets, and bolts. Torque to 10 FP. If they leak (likely not), tighten just a bit more to 15 FP. If it still leaks take it apart and find out why. Disassemble your 352 after you have run the engine to warm things up. You will likely bust off some of the top bolts.
William in Atlanta
William in Atlanta
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