[Jag Daddy]

I've found a et of custom made headers for my setup. I need to have air rails installed on them to make them "legal". The builder wants me to send one of my ram horn mainifolds in for measurements and fitting sizes, aren't all ram horns the same? Also can't I use a single fitting into the collector or must it be the 4 small fittings into each pipe?

Thanks
Mark
<RFC><

[Copper Top]

some have accessory bracket holes,some have a.i.r. emission fitting holes,and some come straight down while others curve backthere is even one that came out with a 3 bolt pattern in the center.what is the number on it?

[Copper Top]

but the way,i wouldn't send any rams horn manifolds anywhere,those things have a "habit" of getting lost.They are getting pretty hard to come by and I don't know of anyone who reproduces them very economically

[M&M CUSTOM]

Copper Top is right - don't send the manifolds anywhere.
Take measurements, pictures, write down descriptions, or whatever you can to best describe what you need.
Any competant builder worth his own weight in scrap steel should be able to supply you with what you need.
I would recommend using the individual fittings for all exhaust ports, as it will promote much more even gas temperature in the headers while promote more complete burning of all exhausted gases yielding better sniffer test results.
Does your application also require a catalytic converter? If so, having more exhaust gasses that are "burned off" before entering the converter will result in less contamination of the catalyst material in the converter, helping it do its job.

[pasadenahotrod]

The ram's horn manifold rarity question has appeared again.
I go to several major swap meets and many local/area swap meets in the TX OK AR LA area and see plenty of ram's horns. There are so many it would probably be possible to match numbers if you're replacing something already on your car.
Some vendors have piles of them chest high.
15 or more years ago these "rare" manifolds were selling for $45-75 the pair. These prices haven't changed much. I just paid $15 for the LH manifold with gen mount for my son's 57 BelAir with 327V8.
Usually they are priced at $25-35 each these days unless you have an unusual app like those magic golden Corvettes.

[M&M CUSTOM]

Not only for the "rarity" questionability, but shouldn't anyone worth his weight in dirt be able to make the required tubing and fittings with comprehensive information for the application.
I cannot sensibly justify as a fabricator having a customer send me a set of exhaust manifolds to make the same measurements he can, and have his "precious" antique/classic/custom/rare-parts laying around my shop in my way.
Besides- in that case I made the part with his specs. and if they don't feel satisfied with the end result they already knew beforehand that custom parts are fabricated with the understanding that I will make the part to their initial specifications, if there are any questions as to the specs. I will contact them before they spent the first dollar if possible.
The customer is NOT always right and thats' why they come to me in the first place, to do something they can't or won't, but I do my best to make them happy with the end result.

[Copper Top]

It's faily difficult to find them in my neck of the woods and the ones I have found usually turn out to be cracked but,it does help to know where to look.