HP exhaust manifold ???????

[Highbanked Hauler]

 Its my understanding that through 69 they are all the same and 70 and up the left side is different but the right is still the same. Is this correct ? Thanks.

[A383Wing]

I thought they were all different...the angle and position of the header flange is the issue from what I heard

[BLK 68 R/T]

My understanding from what I have read and pictures I have looked at is the following.

67 HP manifold left side is unique.
67-69 HP manifold right is the same.
68-70 HP manifold left is the same.
70 HP manifold right is unique.

71 on up I'm not sure about.

[grdprx]

Just the info I needed, how to you tell what manifolds you have?  Cast #s?  I got mine off Craigslist.

[Highbanked Hauler]

Just the info I needed, how to you tell what manifolds you have?  Cast #s?  I got mine off Craigslist.

   part numbers but I don't know what they are .

[BLK 68 R/T]

Hope these #s help out 
67 HP manifolds 2806900 (RH) 2806974 (LH)
68-69 HP manifolds 2806900 (RH) 2843992 (LH)
70-71 HP manifolds 2899879 (RH) 2951865 (LH)

[oestermarken]

Just the info I needed, how to you tell what manifolds you have?  Cast #s?  I got mine off Craigslist.

   part numbers but I don't know what they are .

From mymopar.com:
Mopar Exhaust Manifold Casting Numbers 1958-1973 http://www.mymopar.com/index.php?pid=70

/Brian

[Dino]

So if I want to put HP manifolds on my '71 440 engine that's in the '69, do I need to find manifolds specific for '71?

[68 RT]

No only the flange for the pipes are different.

[Dino]

Cool!  Thanks!   

[grdprx]

Lovely, I have a 70-71  2899879 on the right and a 73-74 3751068 on the left. That's what buying on Craigslist will get you...

[myk]

Oh that sucks.  Well as long as the system works?

[68 RT]

Lovely, I have a 70-71  2899879 on the right and a 73-74 3751068 on the left. That's what buying on Craigslist will get you...

You will just have to have someone bend up your head pipes.