Do Shorty headers fit factory exhaust?

318willrun said

TTI shorties are suppose to be a good fit. Also a good price.

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Good compared to Sanderson or Headman shorties, but there are tight spots, especially in an A-body. Most important for the OP, they do not just drop in the place of the exhaust manifolds and bolt up. They go in from underneath and will need a special headpipe which can be purchased from TTI or made by a shop.


to 68valiant225: Any change you make from the 318 exhaust manifolds will likely require some modification to the headpipe's you had made. A welding shop with an oven or heat table can fix a crack. You'll have to leave it as it must be heated and cooled slowly. Prices can range from 50 to 200 bucks around here.