exhaust tube sizing
06-05-2013, 04:10 PM
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exhaust tube sizing
I'm wondering why, when shorty headers that have 3" collectors have corresponding y-pipes that are only 2.5" into 3 at the cat end or in some case 2.25" into 2.5"? For high HP cars it would seem that 3" collectors would like a 3" Y-pipe. Otherwise why not make the collector 2.5"? I'm sure there are good reasons for this.
06-05-2013, 04:18 PM
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Car: 1971 Camaro
Engine: 427
Transmission: TKO600
Axle/Gears: 3.73
Re: exhaust tube sizing
Packaging.
It's a tight fit to make a 3" y pipe. Esp where it goes between the k member and the oil pan.
Mass production 3" y pipes would likely end up with y pipes that gave clearance issues.
It's a tight fit to make a 3" y pipe. Esp where it goes between the k member and the oil pan.
Mass production 3" y pipes would likely end up with y pipes that gave clearance issues.
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