1969 Charger R/T 440 RB Exhaust Manifold Heat Riser Kit Part Numbers

robl72

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I am trying make sure I have the correct Exhaust Manifold heat riser kit for my 69 Charger R/T 440 RB engine.

I have seen two separate NOS part numbers for sale.

2808446 which is listed for w/H/Perf. and 2585531 which is listed for w/o H/Perf.

My questions is do these parts interchange? Both kits pictured for sale look exactly the same. (I have attached photos for reference).

I ended up buying a 2585531 today, before I noticed it was listed for Non Performance Engines. I do not want to install it if it is going to be a big mistake.

If anyone has specific info on if these part numbers parts interchange that would be of great help.

Thanks

2808446.jpg 2585531.jpg
 

toolmanmike

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I am trying make sure I have the correct Exhaust Manifold heat riser kit for my 69 Charger R/T 440 RB engine.

I have seen two separate NOS part numbers for sale.

2808446 which is listed for w/H/Perf. and 2585531 which is listed for w/o H/Perf.

My questions is do these parts interchange? Both kits pictured for sale look exactly the same. (I have attached photos for reference).

I ended up buying a 2585531 today, before I noticed it was listed for Non Performance Engines. I do not want to install it if it is going to be a big mistake.

If anyone has specific info on if these part numbers parts interchange that would be of great help.

Thanks

View attachment 1159368 View attachment 1159369
I bet the butterfly valves are different size. (they look like it from here) Larger for the high perf manifolds.
 

robl72

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I bet the butterfly valves are different size. (they look like it from here) Larger for the high perf manifolds.

Great point. They do look like different sizes. The shaft looks around the same length but it is tough to tell. I am hoping it is the same and maybe I can use my old flap?
 

gtx6970

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the valve / flapper is the only difference between the 2 pt numbers
 

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