What would you spend for......

[celticwarlock]

What is the going rate for a set of C-body HP exhaust manifolds? My car is a '69 NY, and the motor is a 440. I seem to remember hearing that the driver's side one is not C-body specific, or at least, is less expensive....but the passenger's side can be quite expensive and is only for a C-body application. 1). Is this true? 2). What can I expect to spend for both?

 

[300rag]

Can't help with the pricing, but I believe you have your sides mixed up. I am sure it is the driver's side is the C specific.

 

[celticwarlock]

Can't help with the pricing, but I believe you have your sides mixed up. I am sure it is the driver's side is the C specific.

Thank you for pointing this out! I thought I might have it ***-backwards. Does this mean that the PS one from a different application will fit, and fit well? If anyone can give me a ballpark figure for the pair, that would be awesome. Maybe someone looking to take a pair to Carlisle would like to save themselves the trouble of packing them up.....if the $ is right.

 

[Turboomni]

I have heard they do not add any appreciable HP over stock manifolds ,,but only what I have read. I would like to hope that is not true.

 

[300rag]

Thank you for pointing this out! I thought I might have it ***-backwards. Does this mean that the PS one from a different application will fit, and fit well? If anyone can give me a ballpark figure for the pair, that would be awesome. Maybe someone looking to take a pair to Carlisle would like to save themselves the trouble of packing them up.....if the $ is right.

I am 99% sure passenger side is the same B&C bodies.

 

[celticwarlock]

I have heard they do not add any appreciable HP over stock manifolds ,,but only what I have read. I would like to hope that is not true.

The research I have done suggests they do at least flow better than stock. I suspect it will not be a significant HP gain at all, but the small upgrade may be worth what they cost. They will be far less $ than a good set of headers, I would think. For a variety of reasons, I will not ever be putting headers on this car.

 

[celticwarlock]

I am 99% sure passenger side is the same B&C bodies.

99% sounds good to me. I will look into this. I have heard this elsewhere. Any information on pricing?

 

[polara66hardtop]

The driver side is specific, and does add performance, as you now have two exhaust pipes Instead of one. Plus they are larger in Diameter. The Passenger is the same B or C. I have a Driver side if you are Interested.

 

[celticwarlock]

The driver side is specific, and does add performance, as you now have two exhaust pipes Instead of one. Plus they are larger in Diameter. The Passenger is the same B or C. I have a Driver side if you are Interested.

I already have dual exhaust, but I am looking to get something the 440 can breathe a bit better with. I will send you a PM for the DS one. I have my eyeballs on one that is elsewhere on the Internet, but it couldn't hurt to try to get the best deal possible.

 

[Slantsix]

Ebay prices atm for C-body hp manifolds is 200-400$ range.

 

[70bigblockdodge]

They were only worth 5 HP in a dyno test on FBBO. That was over a 63-64 era log exhaust manifolds, late 60s you will probably gain less, over a set of formal exhaust manifolds close to nothing.

 

[live4theking]

I agree with the $200 - 400 range. Here's a listing of applications. I know one of the ones I used wasn't intended for a C body, but I cannot remember which one or side at the moment. I'll have to try to check tonight.

 

[celticwarlock]

They were only worth 5 HP in a dyno test on FBBO. That was over a 63-64 era log exhaust manifolds, late 60s you will probably gain less, over a set of formal exhaust manifolds close to nothing.

Wow....it hardly seems worth it. $200-$400 for less than 5 HP is a poor investment. Thanks for the information, everyone.

 

[commando1]

The upswept manifolds flow better enough over the "log style" manifolds and the bang for the buck is good if you can find a set cheap enough.
The bang for the buck of HP manifolds over the "upswept" isn't really there.
Headers? Fergeddabouddit. Useless as the Pope's balls unless youre running a "built" engine and bracket racing.

 

[70bigblockdodge]

Probably worth more in fuel mileage if you spend the time to tune it. I would just go with the dual exhaust and only the HP manifold if I fell into them. My 2 cents fwiw

 

[bluefury361]

I swapped a pair of correct HP manifolds onto Jazebelle and didn't notice any benefit or gain in power. They look cool though. Dual exhaust is all you need.

 

[70bigblockdodge]

They look cool though

 

[Snotty]

I don't like them after doing a tune-up on a 300 Hurst. They are a pain to change plugs on!

 

[mmissile]

Ebay prices atm for C-body hp manifolds is 200-400$ range.

Yikes, I threw some away.

 

[The Horvaths]

The upswept manifolds flow better enough over the "log style" manifolds and the bang for the buck is good if you can find a set cheap enough.
The bang for the buck of HP manifolds over the "upswept" isn't really there.
Headers? Fergeddabouddit. Useless as the Pope's balls unless youre running a "built" engine and bracket racing.

As for headers and bracket racing, I can say that my car races perfectly fine with stock manifolds.