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dangerdad96@yahoo.com Aug 11th, 08, 11:32 AM Have cast iron exhaust header part #3868308(RH) passenger side big block, maybe ^65 427, no AIR, very early take-off, als0 3856297(LH) Had them so long can't find application.Anyone know what these fit or how to find out?????? Jim lloyd 1968SS427 Aug 11th, 08, 12:34 PM Hey Jim; can't find the 3868308, but the 3856297 is a LH '65 396 325hp header. Mike Aug 11th, 08, 12:45 PM See if your 3868308 isn't actually 3856306 65 396 RH Passenger 325 HP Dean Aug 11th, 08, 12:52 PM Where are y'all getting your information? I can't find thoses numbers in my MSA-1 Chevelle Casting Numbers book or in the Chevrolet By The Numbers books. dangerdad96@yahoo.com Aug 11th, 08, 2:33 PM hey Jim; Can't Find The 3868308, But The 3856297 Is A Lh '65 396 325hp Header. 1 dangerdad96@yahoo.com Aug 11th, 08, 2:35 PM Thanks for LH info. I thought this was a matched pair, but apparently not! Thanks again. Jim Lloyd dangerdad96@yahoo.com Aug 11th, 08, 2:54 PM See if your 3868308 isn't actually 3856306 65 396 RH Passenger 325 HP The manifolds have just been glass-beaded, the castings are as new, I just went out and verified my handwriting. The full casting # is GM1(Space)3868308RH. The outlet angle is wrong, and will not work on a '69 block in my '66car.Exhaust pipe will hi starter(!) .I would have to create a snake pipe and cut down on pipe diameter. Do you have the correct 66 manifold part numbers for the 396? Thank you very much for helping in this search! Jim Lloyd dangerdad96@yahoo.com Aug 11th, 08, 3:06 PM Where are y'all getting your information? I can't find thoses numbers in my MSA-1 Chevelle Casting Numbers book or in the Chevrolet By The Numbers books. What's a good source for locating these old part numbers? thanks for looking Jim dangerdad96@yahoo.com Aug 18th, 08, 4:24 PM Hey Jim; can't find the 3868308, but the 3856297 is a LH '65 396 325hp header. Thanks very much for chasing that casting 3856297, datedE225. I was wrong on the right-side number , it was 3856306 dated E145. You have been a great help to me, since now I know what I have. I also discovered the 1966 casting numbers, and I guess the question now is will 1966 cast iron exhaust manifolds work on a 1969 block in a 1966 body ????? Or will I be better off to find '69 no A.I.R. manifolds???? Well, all that's part of the fun in this hobby. Thanks again! jim Lloyd dangerdad96@yahoo.com dangerdad96@yahoo.com Aug 18th, 08, 4:26 PM The manifolds have just been glass-beaded, the castings are as new, I just went out and verified my handwriting. The full casting # is GM1(Space)3868308RH. The outlet angle is wrong, and will not work on a '69 block in my '66car.Exhaust pipe will hi starter(!) .I would have to create a snake pipe and cut down on pipe diameter. Do you have the correct 66 manifold part numbers for the 396? Thank you very much for helping in this search! Jim Lloyd You are absolutely correct, my very old eyes were wrong! Thank you!!! Jim Lloyd | ||