KennyAdams Posted January 9, 2015 Share Posted January 9, 2015 Does anyone know the correct casting numbers for the exhaust manifolds for a 71 SS 454 and also is there another casting number that will fit the drivers side without modifying the collector pipe. Thanks for any information. Quote Link to comment Share on other sites More sharing options...
lastss Posted January 9, 2015 Share Posted January 9, 2015 RH 3989310 LH 3989343 I have a set I can sell but only a set wont split up lastss@hotmail.com Quote Link to comment Share on other sites More sharing options...
KennyAdams Posted January 9, 2015 Author Share Posted January 9, 2015 How much Bob? Quote Link to comment Share on other sites More sharing options...
LostnFound Posted January 9, 2015 Share Posted January 9, 2015 Kenny, there's two different types with those casting numbers.....ones with the smog holes and ones without. Our cars came with the non-smog hole ones. (unless the ones with California emissions came with smog?) Quote Link to comment Share on other sites More sharing options...
KennyAdams Posted January 11, 2015 Author Share Posted January 11, 2015 Thanks Lost. Do you know if there is another casting number that is the same. My problem is the car when I got it had a 329225 for the drivers side. I am putting it back together and when I went to put the repop exhaust on it hung too low on drivers side. I don't know if the pipe is bent wrong or it is the manifold is a littl different. I don't have a problem buying the correct manifold just trying to find out if it is the pipe bent wrong or manifold is just a little different. Thanks for any info. Quote Link to comment Share on other sites More sharing options...
lastss Posted January 11, 2015 Share Posted January 11, 2015 That # 329225 is the same except smog tube. Must be your pipe. Quote Link to comment Share on other sites More sharing options...
KennyAdams Posted January 11, 2015 Author Share Posted January 11, 2015 Ok thank you bob. Quote Link to comment Share on other sites More sharing options...
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