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N/A Exhaust Size

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79bird

Member
Joined
Oct 31, 2002
Messages
91
I'm putting together (Still) my 4.1 into my '79 Sunbird and would like to know the correct size for the exhaust. And which way to go with it. A Dual with an X crossover or a Y-Pipe with a single exhaust. I'm going to get a set of stock exhaust manifolds off a '80 Regal 3.8 for the 2" outlets. The car will be a road car. The motor has mildly ported heads and an isky cam 2 steps over stock. I'm going to go with a TH350 to start with 2:73 rear gears, but will eventually go with a 200R4 with 3:42 S-10 or Camaro gears. I'd like to keep a cat for the emissions but I don't have to due to the cars age. Personally I'm leaning towards the single system.
 
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