Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
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#1
02-13-2008, 01:57 AM
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Re: Sidepipes
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#2
02-13-2008, 04:48 AM
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Re: Sidepipes
-----So did O.K.Kustom out of Michigan. OK actually did headers and sidepipes for sale thru GM dealerships with GM part #s. I bought two or three sets for Corvettes that way. They were more performance oriented than the Hookers I think. I believe OK also made Camaro undercar headers for Camaro small-blocks with GM part #s on them. I dont know, however if they made Camaro header-sidepipes....Bill S
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#5
02-14-2008, 05:16 AM
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Re: Sidepipes
...I wonder how much horsepower is lost running through the mid-year corvette side exhaust with the S-pipe used to connect the headers to the mufflers...
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I don't think it was coincidence that the Great Depression happened during Prohibition... 
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#6
02-14-2008, 05:24 AM
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Re: Sidepipes
[ QUOTE ]
...I wonder how much horsepower is lost running through the mid-year corvette side exhaust with the S-pipe used to connect the headers to the mufflers... [/ QUOTE ] Weren't the side exhaust also chambered which would decrease power as well?  Oh yeah - but it is a small price to pay for sounding sh*t hot! 
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Sam...  
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#7
02-14-2008, 07:26 PM
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Re: Sidepipes
------I have a friend in south Fla. that has an original 67 L88. I think he told me one time that they did dyno pulls with underneath exhaust and sidepipes and there was a 60hp difference. I think that the difference would be more pronounced with an L88 than say a 327/350 but the fact is sidepipes (chambered exhaust) are very restrictive. He got the exhaust guys from northern Ohio (Stainless something or other) to make him three inch free flowing sidepipes. I think he has Hedman sidepipe headers now connecting everything and he says that the combo is the best he could come up with. You almost cant tell the difference in the big sidepipes by looking unless you know, and they fit under the covers.
------I bought a set of thier 2 1/2 inch free-flow sidepipes for our 66 390 and the car felt like it gained 30hp instantly over the original sidepipes. The stainless part is the frosting on the cake as I no longer have to scour the tips and the headpipes once a year to get rid of the surface rust. They are a bit louder and Jan doesnt like that part......Oh well !!!!!!.........Bill S
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