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Forum Index > Exhaust manifold help

Softtrim 3 years ago
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Can anyone tell me...by looking at these manifolds on CL...if they look like 429 manifolds. He says they came off of a 66 Cadillac FWD?He insisted on FWD. Were all 429 manifolds the same? I need a passenger side and this is a good price for the pair...if they are correct, but I dont want to drive across town to find out someone here may tell me different. Thanks


sale-ubchj-2501806862@craigslist.org


yacht_1 3 years ago
ActivityRank: 0

They look like 429 Caddy manifolds to me but it is difficult to know for sure as the pic is small.  If it was off of a FWD car then the only car it coud be is a 1967 Eldo.  Should be the same manifold though.
Jeff Burland 3 years ago
ActivityRank: 0
65-67 manifolds are all the same exc. for '67 Eldo as yacht1 says. Check the backs for cracks and ask if the lower studs are good as those can be tough to heat and replace. 
Correct LH casting number 1482752, RH is 1483915. Don't tell this guy what the numbers are, Ask!
HTH, Jeff

Softtrim 3 years ago
ActivityRank: 0

Thanks for the info guys...I really appreciate it.


rr962 35 months ago
ActivityRank: 0
I need a 429 exhaust manifold RT. side can anybody help me out  Thanks Ron
Jeff Burland 35 months ago
ActivityRank: 0
Just replied to your other post. Jeff
"EZ" 35 months ago
ActivityRank: 0


These manifolds are getting harder and harder to find for our 45 year old engines.  Especially ones that aren't cracked.  Currently the only alternative is Sanderson headers and they necessitate that you fabricate an alternator bracket which not everyone is capable of doing.

I just wonder if a machine shop or professional welder could repair the original manifold by "welding" the cast iron?  I know this process isn't done by too many people  but I've seen it done to engine blocks so I know it's possible.  Anyone have any experience with this?

"EZ"

Jeff Burland 35 months ago
ActivityRank: 0
Everyone I've talked with about this says the same thing. The whole cast iron piece needs to be heated above 500º before welding or you will chase a crack. Others say to cool the piece. Seems the 150-500º range is what gets the piece in trouble. Mig welding seems to work since short welds tend to shock the area less. Here's a link to some posts on the subject. HTH, Jeff
"EZ" 35 months ago
ActivityRank: 0

Looks like lots of conflicting opinions there.  LOL.  But it seems as though some have mig welded cast iron with some success.  I have a Lincoln mig welder at home so next time I have a cracked manifold I'll try to mig weld it and see what happens!

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