Hi All,
Getting tasks lined up on my build.
Thoughts on this?
Getting tasks lined up on my build.
Thoughts on this?
Intake / Exhaust - Repair or Replace?
- Thread starter theamigo
- Start date
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
So are you in Washington or Canada? Was assuming you’re fishing for parts.
- Thread starter
- #3
I'm fishing for ideas. Repair, replace, etc. I'm in western Washington.
Depends how burnt up it is under the carb, from the exhaust.
Cast Aluminum is porous - oil/gas sinks into the pours, very hard to get a good weld, I'd look for a used intake $150 on up
- Thread starter
- #6
- Thread starter
- #7
Good points. If I buy a used intake - seems consensus is to get the whole assembly flattened?
I think this is a golden opportunity to add a header. I've heard that the two manifolds are matched to each other at the factory and fitting two strange manifolds together is hard. Pick a year intake that you like, match it to your new headers.
- Thread starter
- #9
Hmm. I'm thinking header, desmog, and fuel injection.
I agree with going headers if you don’t care about keeping it original. I restored my intake/exhaust and it would have been less expensive to install headers. Lame that broke off on you. Heat cycling destroys all things
I like my header I put on after the cast iron manifold cracked in half. I made brass stepped washers to apply equal torque to the two different thickness. I made longer "studs" and run stainless steel nuts. I also planed the surfaces on a big piece of glass with sand paper. I run a pair of man-a-fre header gaskets that I installed after soaking in water for a half an hour. Fired it up, let it get hot, then cooled - re-torqued. After several heat cycles re-torqued again several times.
Those same header/manifold/gaskets have been on 2 engines at least 3 different times. Never leaked.
Later I made a copy of the Manny fluid heat riser - very handy in the fog climbing the mountain - no carb ice ever.
Those same header/manifold/gaskets have been on 2 engines at least 3 different times. Never leaked.
Later I made a copy of the Manny fluid heat riser - very handy in the fog climbing the mountain - no carb ice ever.
- Joined
- Nov 29, 2007
- Threads
- 26
- Messages
- 473
Whichever route you go, I highly recommend using Remflex brand exhaust manifold gaskets.
More expensive... but absolutely worth it!
More expensive... but absolutely worth it!
While you're in there, you might think about a valve job. It used to be routine every 150k miles or so. Maybe install the Chevy valves. Maybe do a little port-matching with the head and the new intake and headers...
If you’re looking for an intact intake manifold, I dug a few out of storage today for someone who I spoke with on Friday.