dibbons
Well-Known Member
Would like to know what the original cars used, diameter wise, before considering these manifolds for one of my project cars. Thank you.
I think that is what the factory used, with a little squeeze at the driver side t-bar. Although the best fitting head gaskets are just a bit larger than that - available from Accurate (with a metal ring) and TTI (without a ring). Mufflers were 2.25 in as well, so the whole head-intermediate was pretty much 2.25" ODI believe they were 2-1/4" headpipes
The real dimensions are as described above for 1969 models with exhaust tips. These specs are taken from original assembly line components that we have in stock and confirmed by numerous catalogs such as Arvin Industries that actually produced these parts for Chrysler. My guess would be that if you had to use adapters to downsize the rear of the 2.25" replacement mufflers to fit the nos tailpipes you probably had 1968 nos tailpipes which were 1-7/8" OD.Tom, we have been through this before. I have a set of NOS tailpipes on my 69 GTS and everything you said above does not concur with what I have. Can you post the factory drawings? When I bought the headpipes and mufflers from you over a decade ago I had to use two reducers to fit the NOS tailpipes on. I had gotten these tailpipes in 1980 from Chrysler with the factory applied part number tags still on them. I am not here to bust balls, but to find out the real dimensions!
The 1968 340 Darts and Barracudas were equipped with 2” headpipes and 1-7/8” tailpipes. In 1969 they changed to 2 1/4” headpipes except for the left flange pipe which was 2” for about 18”. The tailpipes were also 2-1/4” out of the mufflers and then changing to 1-7/8” about halfway back.Would like to know what the original cars used, diameter wise, before considering these manifolds for one of my project cars. Thank you.
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