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Username Post: 2 1/2" exhaust system for 59        (Topic#350929)
tom sr 
Member
Posts: 284

Loc: Missouri
Reg: 09-17-04
05-02-18 04:56 AM - Post#2732831    

Swapping out 6 cyl to 327/300 horse engine and trying to find a 2 1/2" complete exhaust system (non stainless steel).

I wonder if a 348 system they advertise might work? Their output looks close enough that minor cutting and weld might do it.

Found plenty of 2" systems but no 2 1/2" which I need because of large exhaust manifold outlet.

Also the exhaust hanger kits I've found only come in 2".

Help in locating a source would be appreciated.

Thanks

I never met a car I didn't want (American that is
)!

1969 Impala convertible 427 buckets

Got to have A/C at my age!


 
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corvesy 
"2nd Year" Gold Supporting Member
Posts: 635
corvesy
Reg: 08-07-08
05-02-18 06:22 AM - Post#2732836    
    In response to tom sr

I believe Shafer Automotive has a 2 1/2 system. Keep in mind if you have wide tires in the rear that there is not much clearance for big exhaust.



 
DZAUTO 
Senior Member
Posts: 8507

Loc: Mustang, OK, USA
Reg: 12-25-99
05-02-18 07:04 AM - Post#2732841    
    In response to corvesy

The 62-64 full size cars with a 300/327 had 2 1/2in manifolds and 2 1/2in pipe back to the mufflers. Then, 2in behind the mufflers.
Sooooooooooooooo, use 2 1/2in aftermarket manifolds (from Rock Auto for about $50ea) and 2 1/2in pipe for a 62-64 back to the mufflers, and 2in tailpipe behind the mufflers for a 59. TOOOOOOOO EASY.



 
tom sr 
Member
Posts: 284

Loc: Missouri
Reg: 09-17-04
05-02-18 09:06 AM - Post#2732850    
    In response to corvesy

thank you they had exactly what I needed (part number 73050)


I never met a car I didn't want (American that is
)!

1969 Impala convertible 427 buckets

Got to have A/C at my age!


 
Tompala 
"9th Year" Silver Supporting Member
Posts: 214
Tompala
Age: 58
Loc: Wuerzburg, Germany
Reg: 04-23-04
05-06-18 08:19 AM - Post#2733168    
    In response to tom sr

Hi, I got me a 2 1/2 front to back from Shafers for my ´59 El Camino with a 350. It came already slightly "flatted" in the rear spring area. Running 255/60-15 on 8x15 Corvette Rallys it is a pretty tight fit, I had to flatten it even a bit more in a vise between two pieces of wood. Now there is little over 1/2" between the springs and the pipes when sitting on it´s wheels. On a lift, the axle wanders to the left cause of the panhardrod an contacts. Distance to the wheels is ok. I fabricatd the hangers out of generic ones.
Thomas

`59 El Camino, `60 Sedan Delivery, `61 Impala HT (sold)


 
stanski 
Poster
Posts: 61

Reg: 05-05-16
05-11-18 06:55 AM - Post#2733671    
    In response to tom sr

Over the years I have built/restored many cars. When it came to exhaust only once did I try an out of the box system and I found nothing fit to my satisfaction. I still prefer a good exhaust shop where the car sits on the hoist and the pipes are bent and fitted right there and all clearances are correct, especially if you are trying to stick 2 1/2" pipes into areas designed for 2" or less. Also, on the X-frame cars, you have the ability to get the mufflers up and tight so you hardly see them from the side. Pipes bent to factory specs seem to leave the muffler too low in the front.



 
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