Is it normal?
Thread Starter
Safety Car
Joined: Sep 2005
Posts: 4,203
Likes: 643
From: Orange County Ca
Is it normal?
My 69 427/390 with Hooker side mount headers and pipes. Identical hardware on each side.
At idle, they sound different. Drivers side is a steady rythem and passenger side is more eratic and uneven.
Is this because of the fireing order being biased towards one cyl bank?
Or unbalanced carb?
At idle, they sound different. Drivers side is a steady rythem and passenger side is more eratic and uneven.
Is this because of the fireing order being biased towards one cyl bank?
Or unbalanced carb?
Last edited by Sayfoo; Dec 16, 2013 at 10:16 PM.
Melting Slicks
Joined: Oct 2003
Posts: 2,103
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From: Chapel Hill NC
2025 c3 ('68-'73) of the Year Finalist - Unmodified
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1968 NOM BB hooker headers/sidepipes. Mine sound the same.
Drifting
Joined: Oct 2007
Posts: 1,317
Likes: 22
From: Marina CA
One day my son drove the 68 (bb 435) and I was a passenger. Noticed the right side sounded a bit different then the left side.
Did not sound rough and uneven, just a bit different. Maybe just my hearing, after all I'm an old timing man! (Borrowed from Cheech and Chong)
Did not sound rough and uneven, just a bit different. Maybe just my hearing, after all I'm an old timing man! (Borrowed from Cheech and Chong)
Pro
Joined: Sep 2012
Posts: 600
Likes: 6
From: Key West Florida
my 77 L48 sounds the same, like a pop/clomp from the passengers side, while drivers side has an even tone, if you think of the firing order, 1-8-4-3-6-5-7-2, its drivers, pass, pass, drivers, pass, driver, driver, pass, the only thing i can figure is that its firing more on the pass side than then drivers in a row, so you hear the individual fires on the drivers side and with the long tube headers it puts two of the same side cylinders firing so close together that it comes out almost like one noise. but thats just a shot in the dark
