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Old 02-06-2007, 05:34 PM
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exhaust questions..

I was given a set of block hugger headers for Christmas from a guy at the Church I go to. He told me to put the body on the frame first before I do the exhaust. There is a surplus store in our town wher I can get 12' lengths of exhaust pipe. A muffler shop in town told me that they would make any bends I might need. As of right now I have no collectors on the headers. I can get 2 1/2"- 3" pipe. I know I would need both collectors, and two down pipes. First. What size should I use?? Next I would have to run to a cat. convertor. Would I need two of them?? Then I was told to run the pipe all the way back and put the muffler at the end. Is this the right way to do this?? Should I put the body on first, or do it now?? Thanks..

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Old 02-06-2007, 05:41 PM
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Depends on the car...How much room do you have under the car? I would run 2 cats, put the mufflers just ahead of the rear end and then tailpipes out the back. The size of pipe depends on your engine size and performance potential of it.

You may also want to run a crossover or "X" pipe to balance the exhaust, but with running cats, it becomes a little more complicated.
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Old 02-06-2007, 05:51 PM
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Well the frame is a 37 Ford. There is a 350/350 in it. As far as the engine performance goes?? I don't know. I have never had it running. Once past the transmission it is clear sailing all of the way back. I am not sure I need the convertor or not, but with the way laws keep changing I figured I should put them in, besides the surplus store has Flowmasters for $25.
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Old 02-07-2007, 06:00 PM
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How could I find out weather or not I need to put cats on the car??
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Old 02-07-2007, 06:08 PM
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I figure on a vehicle that old, that never had cats to begin with, you wont need them and never will....They can only force you install what originally came on it..............Pretty sure of that.

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Old 02-07-2007, 06:47 PM
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So having a 37 Ford with a 350 in it. It would still be a 37 Ford then.. I guess I will have to check Minnesota laws, or with the MSRA. That "X" pipe you talked about. Would that go just after the down pipes from the collectors??, and if I were to put on cats. would the cats go first. Then the "X" pipe. Then route the pipes back to the mufflers then out??
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Old 02-07-2007, 06:58 PM
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Probably best to ask an exhaust guy about that. The 5 litre Mustangs have the cats, then the balance pipe and then back to the mufflers..........
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