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Original Message
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Beware of headers! |
By Dave Shoe - 09/28/2001 1:46:45 AM; IP 216.243.158.5 |
Not all headers which fit your car will fit your engine.
Be sure to get headers which do NOT work work with 427 or CJ heads. Your 390 heads have the exhaust runner repositioned to the "emissions head" position. These heads are really well designed, but require headers which have the "low positioned" header flange. I'm not talking bolt holes here, I'm takling about port flow. Sadly, there are no books which explain this, and header manufacturers aren't talking, so you just need to pay attention that your headers actually MATCH the heads - lest the weld bead on the header not properly crush the gasket and thus permit exhaust leaks eternal.
Shoe. |
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