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Y1 reproduction manifolds

casey henson

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Does anyone have experience with these ? I am considering a set of these for my 77 since TTI says they can not connect to my existing factory manifolds.

hp689s.png
 
I purchased the passengers side one and it was fine with a little tidy up with a die grinder in the first part of the manifold.
Good repop in my opinion.
 
my 400 in my 77 has small manifolds with 2.25 outlet ball socket style. I figured these would be a good upgrade over what I have now. also i cant find anyone that makes a down pipe for my stock manifolds.

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These in this picture are the Year One repops. I had the down pipes from the 69 Roadrunner left over after swapping to headers. They just use a flat flange and a bent piece of pipe. Buy the flange that fits the HP exhaust and then have a muffler shop do the rest. https://www.oreillyauto.com/shop/b/...xhaust-flanges---universal-19035/a98cd32ca2e3

View attachment 985544 View attachment 985545
Thank you ! from what I can see those look real good. I am pretty sure TTi and I think magnaflo make a set of head pipes for those. 68-69 manifolds
 
This is my current manifold which is "ball&socket" style. The ID on these is only 2-1/8"

IMG_0940.JPG
 
These in this picture are the Year One repops. I had the down pipes from the 69 Roadrunner left over after swapping to headers. They just use a flat flange and a bent piece of pipe. Buy the flange that fits the HP exhaust and then have a muffler shop do the rest. https://www.oreillyauto.com/shop/b/...xhaust-flanges---universal-19035/a98cd32ca2e3

View attachment 985544 View attachment 985545

Do you happen to know what the outlet size is on these reproduction HP manifolds ?
 
Just checking one more time to see if anyone else has used these. I am getting close to making a move.I have been debating used manifolds, TTI headers$$$ and these reproductions. I want to keep my column shift intact. Plan on doing a bolt on exhaust behind whatever. 2.5”
 
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