C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

409 SS Mandrel bent duals

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Old Mar 23, 2009 | 07:42 PM
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Default 409 SS Mandrel bent duals

Curious, does $400 for a set of 409 SS Mandrel bent duals, no mufflers sound right?

No mufflers, just going from my headers to the Magnaflows I already have.
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Old Mar 23, 2009 | 08:35 PM
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It doesnt sound like an amazing deal. Maybe someone else will chime in.....
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Old Mar 24, 2009 | 03:43 AM
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Seems a little high to me, this price is from Allens in Logansport, IN.
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Old Mar 24, 2009 | 04:40 AM
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If that's for everything from the headers back , in 3" and an 'x', I'd say that is reasonable, if not what is included?
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Old Mar 24, 2009 | 07:35 AM
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Originally Posted by mseven
If that's for everything from the headers back , in 3" and an 'x', I'd say that is reasonable, if not what is included?
from the end of the collector to the begining of the muffler, no header, no mufflers
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Old Mar 24, 2009 | 08:01 AM
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SS is expensive...I had 2 tailpipes done for a car once that ran $60 without any install. If this is a drop off and pick up price I would say it is reasonable.
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Old Mar 24, 2009 | 09:55 AM
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Default IF.... the exhaust you state is

409 stainless MANDREL bent for $400? Smokin' deal

crush bent (what 99% of exhaust shops do) is still a deal... Even aluminized mild steel that's crush bent is reasonable at $400.

Some exhaust facts for you to chew on:

Exhaust shops typically don't mandrel bend pipe. Mandrel benders utilize special consumable mandrels that go INSIDE the pipe during the bending process to maintain a constant ID for the radius of the bend, and are used primarily for production work (like exhaust manufacturers).

Exhaust shops use what are called compression (nicknamed crush) benders, which do exactly as is implied..crush the pipe from the outside to bend it, and consequently the ID (inner diameter) of the pipe is necked down through the radius of the bend.

The average mandrel bender costs around $75,000 to $100,000, not including replacement mandrels.

The average crush bender costs around $4000 to $10,000, making it the choice of 99% of exhaust shops.

None of this takes into account the cost of exhaust tubing, mufflers, etc.


Our shop offers what we call "Mandrel Fab" systems which are fabricated from mandrel-bent sections of pipe, custom fit to the individual vehicle, or we crush bend systems... depends on what the client wants.


Blackbird's exhaust is 3" mandrel-fabbed from the headers back, and it cost me more than $400 in materials (labor I didn't count, but time to fab was about 5 hours)
- still "in process"
- And complete from the rear.


So... if the system you're referring to indeed is mandrel bent, I'd jump on it!

Last edited by RacerX70CC; Mar 24, 2009 at 10:01 AM.
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Old Mar 24, 2009 | 02:06 PM
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From the warehouse I buy from, SS 2 1/2 exhaust is over $100 for a stick. Mind you a stick is 20 ft, you can use 1 stick per side depending on your experience with the bender. But even then it can be hit or miss and you can overshoot a bend. For $400, if it is indeed stainless its a screaming deal.
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Old Mar 24, 2009 | 04:47 PM
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I appreciate the input,, basically he will form the tubes then I will pick them up and install them since I don't have a cat....


http://www.allencorvetteexhaustsystems.com/
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Old Mar 24, 2009 | 05:23 PM
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From the pictures on his site, it's crush bent.

Still... if it's stainless, it's a good deal
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Old Mar 24, 2009 | 07:34 PM
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Originally Posted by LD85
from the end of the collector to the begining of the muffler, no header, no mufflers
That sounds like a good price to me. The system I currnely have is a random tech. bright S.S., all mandrill bent, 3'' including x'' (after the x it necks down to 2 1/2''), bullet cats and just up to the muffler (no mufflers). I bought it about 4 years ago for $980.

Last edited by mseven; Mar 24, 2009 at 07:37 PM.
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