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Username Post: Walker mufflers…        (Topic#373936)
"7th Year" Silver Supporting Member
Posts: 175
Loc: Houston, Texas
Reg: 03-11-05
10-23-23 02:58 PM - Post#2863530    

I’m in the process of replacing my rotted out mufflers and tailpipes on my ‘55. The restorer had non stock(2” inlet/outlet)mufflers and tailpipes installed during restoration. This is a from the Power Pack car so I ordered a set of Walker mufflers from my local auto parts store but the inlets are 2” and the outlets are just over 1 5/8”. Shouldn’t the inlet and outlet diameters match? Does anyone know what the stock inlet/outlet dimensions are? Thanks!


Senior Member
Posts: 1691

Loc: North Coast, USA
Reg: 12-19-01
10-24-23 05:43 AM - Post#2863550    
    In response to Travs55

If you also want 2 inch outlets you have to order a different part number.

I have super turbo walkers with both 2-1/2 inlet/outlet but they are a universal fit design. Super is the long case turbo model. You have the option of centered or offset inlet/outlet and the different tube diameters.

Senior Member
Posts: 1948

Loc: Whitewater, CO
Reg: 05-25-01
10-30-23 10:25 AM - Post#2863747    
    In response to 55MAS

For a stock car, those are probably correct.

The theory on that it that as exhaust cools, it contracts and you therefore need less pipe area.

I am not sure that I buy that.

It is also quieter....not a plus in my book. But, I bet that was important to GM. The average person doesn't want to hear their car....or so GM might think.


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