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Old Jul 4, 2007 | 10:43 AM
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Default Help to ID a Part #

Can anyone ID GM Part # 496346 Gr. 3.075. If so, would you be able to tell the year (s) this # was used on the part, which i believe is a 68, 69 exhaust spout. I've seem several different #s for this part, thanks!
Happy 4th!!!!!!!!
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Old Jul 4, 2007 | 01:36 PM
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Hopefully someone else will help you first but I've got a book around here somewhere that may help.

Rick
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Old Jul 4, 2007 | 01:52 PM
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Originally Posted by avalonjohn
Can anyone ID GM Part # 496346 Gr. 3.075. If so, would you be able to tell the year (s) this # was used on the part, which i believe is a 68, 69 exhaust spout. I've seem several different #s for this part, thanks!
Happy 4th!!!!!!!!
http://fiedlerh.home.att.net/exhaust.htm

The '74 Grand Am tip (left) is essentially the same as a '68-'69 Corvette (right) chrome tip. These are readily available from Corvette restoration suppliers. The only difference is the position of the crimping slots where the clamp installs, which you can't see unless you crawl under the car and look closely. Other than that, they are identical.

Pontiac part numbers
74 all A (except Station Wagon) qty 2 496346
This part number was superceded by 3952742

Note that 73 and 74 tailpipes are different due to the differences in chrome tips.
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Old Jul 4, 2007 | 02:20 PM
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Originally Posted by slk230red
http://fiedlerh.home.att.net/exhaust.htm

The '74 Grand Am tip (left) is essentially the same as a '68-'69 Corvette (right) chrome tip. These are readily available from Corvette restoration suppliers. The only difference is the position of the crimping slots where the clamp installs, which you can't see unless you crawl under the car and look closely. Other than that, they are identical.

Pontiac part numbers
74 all A (except Station Wagon) qty 2 496346
This part number was superceded by 3952742

Note that 73 and 74 tailpipes are different due to the differences in chrome tips.
Thanks, can you explain a little more about the difference in the crimping slots? Thanks, john
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Old Jul 4, 2007 | 02:23 PM
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Originally Posted by avalonjohn
Thanks, can you explain a little more about the difference in the crimping slots? Thanks, john
also, i was unable to click on that link you sent. is there a site i can go to?
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Old Jul 4, 2007 | 03:47 PM
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Originally Posted by avalonjohn
also, i was unable to click on that link you sent. is there a site i can go to?
http://fiedlerh.home.att.net/exhaust.htm

Opens for me, anyway, I think the crimping slot position refers to the position in reference to the mounting position on the muffler. Like 3 o'clock and 9 o'clock.

Maybe someone else will clarify this part number.
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Old Jul 5, 2007 | 01:38 PM
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Originally Posted by slk230red
http://fiedlerh.home.att.net/exhaust.htm

Opens for me, anyway, I think the crimping slot position refers to the position in reference to the mounting position on the muffler. Like 3 o'clock and 9 o'clock.

Maybe someone else will clarify this part number.
I got the link open, does this mean these are correct for a Potiac only and not a Corvette?
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Old Jul 5, 2007 | 03:02 PM
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http://www.zip-products.com/Zip/prod...4261F37B48B5E3

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