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Installing Headers...

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Old 07-24-2004, 11:37 PM   #1
melissa0907
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I am putting some hooker headers and sidepipes on my (as of today) stock '80 L48. Cam, heads, etc are in the plans but will be a few weeks down the road. When I install the headers and remove the stock exhaust will the car run normally? Will the timing or anything else have to be changed immediately when I take the stock exhaust off? I am just trying to know what to expect. It is in good (slow) running condition right now. Thanks.
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Old 07-25-2004, 12:48 AM   #2
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the tune "may' need to be changed but you should be fine to cruz and see
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Old 07-25-2004, 03:40 AM   #3
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You shouldn't have to make any changes...
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Old 07-25-2004, 08:17 AM   #4
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A richer fuel mixture would yield a few more HP with the free flowing exhaust. If the new headers get to glowing cherry red hot, it might be an indication of too lean a mixture. Advance the timing a couple of degrees too. As long as you dont get spark knock yur ok.
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Old 07-25-2004, 10:56 PM   #5
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I just pulled the stock exhaust off. I think it weighed about a ton or so!!! Haven'st gotten a chance to put the headers and pipes on yet though.
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Old 07-26-2004, 08:17 AM   #6
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I've put headers and a true dual system on my '80 L48 and didn't have to make any adjustments. Sidepipes should be very nice though. Of course we'll need to see photos.
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