65 Impala Exhaust System Question - Impala Tech
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post #1 of 6 (permalink) Old 11-27-2011, 09:14 AM Thread Starter
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65 Impala Exhaust System Question

I have a 65 Impala 2 door hard top with a numbers matching 396. I had the motor completely rebuilt, a couple notches above stock, standard bore, pistons etc. - little hotter cam with a 3 angle valve job to the heads. The mechanic that built the motor said it will make around 375 + horse power. I'm getting ready to set the body back on the frame in the next week or two. I'd like to install the exhaust myself at my shop vs. having it flat bedded to an exhaust shop. I have the factory exhaust manifolds on the car - no headers. I'd like to have a full 2.5" exhaust system from front to rear that exits under the rear bumper as the stock system did. As far as sound goes, I'd like to have a little rumble - nothing too loud. My 2005 Silverado has a cat back gibson exhaust on it - slight rumble at idle and sounds healthy under acceleration. Is there a bolt on system out there from front to rear? Is there a system that anyone has actually used that can give me their opinion on? I'd appreciate any advice! Thanks!
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post #2 of 6 (permalink) Old 11-27-2011, 09:41 AM
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Walker made the original pipes and mufflers (and resonance chambers for use with free flow mufflers). NAPA sold Walker replacement header and tail pipes, and mufflers, and brackets, and hangers, and the asbestos gaskets, as well as the resonance chambers with the factory tips once apron a time.

Since they can still find and obtain parts for my John Deer 1947 model M tractor if I give them a week I am sure it would be worth asking them what it would cost to bolt it back together factory original.

Big Dave
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post #3 of 6 (permalink) Old 11-27-2011, 11:06 AM Thread Starter
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Big Dave, I actually called Walker about a week or two ago when I saw they show the complete set up on their website. The guy in the tech department told me it has long since been discontinued and were no longer available. I called Pypes and they said they can get me a set up for a header equipped car that requires the down pipes to be made by an exhaust shop. Wouldn't say, Chevelle big block down pipes be the same? Probably too short though, right/ I'm just trying to avoid having to put the car on a flat bed and take it to a muffler shop.
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post #4 of 6 (permalink) Old 11-27-2011, 12:43 PM
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....I've hear these guys offer quality products.......


...I see this eckler's have systems also.....I think shafer make theirs also.....


'63 Impala SS 409/425 owned since '71
'64 Impala SS 327/300 factory 4sp p/s p/b air
'66 Impala 327/275 glide 2dr/hdtp
'66 Belair Wagon 283 700R4
'62 Impala 350/350 dual quad th350 2dr/hdtp
'00 Camaro SS 6sp hurst SLP

Last edited by chevman66; 11-27-2011 at 12:48 PM. Reason: added info
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post #5 of 6 (permalink) Old 11-27-2011, 03:08 PM
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All of the bends exist in a printed book. If you go to any muffler shop in your area they can generally look it up in their book and bend a straight twenty foot piece of pipe to fit the car. The pipes are symmetrical (they just reverse the rotation of the bender to bend up the other side). NAPA has the same bend book and can probably bend up a set of pipes at their main warehouse and ship them to your store. That is what they did back in the seventies and eighties rather than having racks of prebent pipe for every car made in stock.

Since Walker has gone digital and retired their pipe bender they can no longer bend up your pipes apparently, I just hope the same hasn't happened at your neighborhood NAPA jobber.

Big Dave
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post #6 of 6 (permalink) Old 11-27-2011, 06:54 PM
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I had this guy build one for my 66 396 Caprice exactly as you described. I went with the Staninless Steel and Turbo Muffler and I am very happy with the fit, finish and sound. 2.5 to factory manifolds to 2 in over rear axel and exits under bumper. http://classicexhaustinc.com/
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