1971 Imperial & 1970-1971 HP Exhaust Manifolds

[1970FuryConv]

My friend has 1971 Imperial, original 440/727 4-door hard top, log exhaust manifolds.
I have a set of 1970-1971 C-Body HP Exhaust Manifolds that I fronted him to look at for his Imperial.
He is having second thoughts about buying them because of fitment questions.
Has anyone put these manifolds on a 1971 Imperial? Fitment Difficulties?
I did suggest that he call TTI on head pipes. Did not suggest Waldron, but that's a back up idea. Thanks for any help!
3418351 left side casting number

2899879 Right side casting number

 

[marko]

just get a set of waldrons dual exhaust for a 70/71 chrysler TNT

(i have 69 HP manifolds and waldrons dual exh on my 78 Salon)

 

[1970FuryConv]

just get a set of waldrons dual exhaust for a 70/71 chrysler TNT

(i have 69 HP manifolds and waldrons dual exh on my 78 Salon)

Thanks. So there's no difference in the front subframe for the 1970-1971 Chryler 300 and 1970-1971 Imperial as far as head pipe/front pipe fitment?

 

[3C's & a D?]

The Imperial has a specific subframe, front fenders and hood. They are 3-5 inches longer than "regular Chryslers." The actual body of the car is the same. Waldron could probably make what you require, or provide extensions for the front pipes.

 

[marko]

its my understanding the engine sits in the same position relative to the firewall as the shorter wheels base C's

 

[3C's & a D?]

its my understanding the engine sits in the same position relative to the firewall as the shorter wheels base C's

That does make sense. I just remembered there is a difference, even with the type of power antenna and there is a bit more length behind the wheel arch and door.

 

[Imperial Pete]

Yes the engine is in the same spot.
The extra 4" length is between the fan and radiator hence the fan shroud being deep on an Imperial.

 

[USSMOPAR]

Try calling Accurate - he is very knowledgeable about interchange of exhaust systems. I put a body dual exhaust front pipes on an 360 hp R body, no cats using 68-70 340 exhaust manifolds....