Cop or other HP 440 Fuselage tail pipe question.

[shooter65]

I’m looking for input from the cop car and HP restoration guys. Can anybody definitively tell me if the tailpipes on my 69 Fury 440 HP should be 2” or 2-1/4”. I’m wanted to buy the pipes for my car from Accurate but there’s a question as to which they should be.

Please keep in mind that everything I do, I’m trying to do correctly as it was when new. I thought I’d read that they should be 2-1/4” but can’t find the answer now.

Thanks.

 

[Davea Lux]

I’m looking for input from the cop car and HP restoration guys. Can anybody definitively tell me if the tailpipes on my 69 Fury 440 HP should be 2” or 2-1/4”. I’m wanted to buy the pipes for my car from Accurate but there’s a question as to which they should be.

Please keep in mind that everything I do, I’m trying to do correctly as it was when new. I thought I’d read that they should be 2-1/4” but can’t find the answer now.

Thanks.

It will depend on which police package the car came with. If it is a T-Code car with standard exhaust it will be 2" exhaust (Log Manifolds) from the manifold to the muffler and usually 2" tailpipes.
If it is a T-Code with the high performance exhaust package it will be 2 1/4" exhaust to the muffler and 2" tailpipes. (These will have the HP exhaust manifolds.)
If it is a U-Code car, all had the HP exhaust and 2 1/4" exhaust pipes to the muffler and usually 2" tailpipes..

A few cruisers with the maximum performance option or the maximum speed option may have varied from the above with 2 1/4" pipes all the way back, these are not very common. The only one of those I have seen was a 6BBL equipped cruiser from 1970. Also keep in mid that police agencies had a wide variety of non-standard performance options to choose from, so the above should serve as a guide only. If you have a build sheet, the exhaust will be coded on the sheet for the left and right manifolds and the left and right tailpipes, usually on line 5. You can decode this number to reference it.

Dave

 

[CBODY67]

According to my old Walker Exhaust catalog, ONLY the 1969 Polara 440/375 cars came with the Street Hemi mufflers and matching dimension tail pipes. Those mufflers were shorter than the normal "C-body size case" mufflers. ONLY year for this was 1969. 1970 and later reverted to the normal C-body size case mufflers, which were longer. 1969 was also the car that set the top speed record in police car tests . . . 2.76 axle ratio and L84-15 tires helped it, no doubt, with the 440HP engine and TF. Not sure of the muffler inlet/outlet specs, on that particular muffler, as I'm not with my books right now.

The '72 Imperial mufflers were 2.5" in/out and had the normal C-body size case, with allegedly the same restriction of the factory Street Hemi mufflers, but quieter. With appropriate-size pipes, they could be used on a dual exhaust car. FWIW

CBODY67

 

[shooter65]

Thanks, sorry for the confusion, mine is not a police car, mine is a 69 SF L code 375 hp 440 Super Commando. I was asking about police cars because I believe mine would have had the same exhaust as the PK21/41 with the 375hp 440's.

 

[m38jeepman]

My 73 fury u code has these tail pipes on it. They are 2.5 inlet and 2.25 outlet I believe.