Casting on manifold

[azygoustoyou]

I'm looking into getting a manifold from someone and I saw one on Ebay. The guy on Ebay said that the casting number on the manifold should match. I asked him what it should match and all he says is the casting on the manifold should match. By now I just want to smack him. So what should the casting # on the manifold match. The down pipe? The manifold is only one piece. I want to get an earlier manifold without the emissions. I really want to make sure my down pipe on a 82 will work with a 68-73 manifold. Can anyone enlighten me on this.

[manoa matt]

Brady,

(80-85) Fuel injected 4-2-1 manifold can only go with the (80-85) downpipe. The mating surfaces have 6 bolts

(68-73) carbed 4-2-1 manifold can only go with the (68-73) downpipe. The mating surfaces have 4 bolts.

If you got the earlier (68-73) 4-2 cast iron manifold, you need the (68-73) 2-1 downpipe.

One look at the vick auto sport (printed, or pdf) catalogue and you will understand.

This is what you have now, note the six bolt holes: http://www.vickauto.com/cgi-bin/store/27-2332.html

This is what you need for the 68-73 manifold: http://www.vickauto.com/cgi-bin/store/27-2317.html

Good thing, as the early downpipe is priced reasonably.

[lanciahf]

Hi Brady,

What Matt said. A 82 down pipe will not work on a 68-73 downpipe.

Ralph

[azygoustoyou]

I don't know. It's starting to get pretty expensive just to change over. Maybe I'll just stick with my headers. I was trying to reduce some of the heat in the engine compartment. They want $225 just to ceramic coat the manifold not counting buying and shipping it to me in the first place. Then shipping it to the coating co.

[lanciahf]

I had a header in my old spider. I made a heat shield to protect the coolant overflow bottle and never had a problem.... Keep your headers!

[narfire]

Yea keep your headers. I picked up a few hints here and have not had a problem yet, longest drive in one go was 400 kms.
It was suggested to keep the overflow bottle at least half full and I used some heat shield wrap around the rubber heater hoses, some even 2 layers, and wrap part of the over-flow hose that goes to the rad and is a bit close to the pipes.
My headers are ceramic coated though but still freeking hot.

[spiderrey]

Someone dosent have all thier facts straight here. I have a down pipe for a cat car that runs off to the side and it DOES bolt up to an early manifold.

[lanciahf]

Some 79 spiders came with a 4-2-1 cast iron header that bolted up to a three bolt cat flange. Not the 4 bolt cat flange that Brady has.

Is that what you have?

[spiderrey]

[spiderrey]

[So Cal Mark]

did a Predator do a flyover of your yard? Was this pic before or after the bomb went off?

[azygoustoyou]

That would be me with the incorrect facts or really the lack of facts. Anyways, still waiting for the final price with shipping.