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Old 09-20-2007, 05:22 PM   #1
samwise68
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exhaust port shape?

hey guys,

i'm just wondering if theres a way (without pulling the exhaust manifolds right now) to determine what shape my exhaust ports are.

reason being, is the parts guy gave me gaskets for round ports. and i honestly don't know what i have on my '69 307. so. i'm just wondering if any of you might have an idea off the top of your heads??

thanks!

-Sam.
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1969 GMC C1500. long fleet.
307. 3 on the tree. 3.07 gears.
Oliver green. Bent and bruised. Daily Driver.

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Old 09-20-2007, 10:08 PM   #2
BCOWANWHEELS
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Re: exhaust port shape?

there dfinatly not round ports they measure 1 5/16" wide and 1 3/8" tall on stock 307 engines.
bob
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Old 09-20-2007, 10:21 PM   #3
samwise68
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Re: exhaust port shape?

Bob,

Thank you!!

now i don't have to wait before i take them back!

i didn't think they were round, but for 40 bucks for the gaskets, he was more than willing to sell them to me.

thanks so much. . i can't say enough, lol.

-Sam.
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1969 GMC C1500. long fleet.
307. 3 on the tree. 3.07 gears.
Oliver green. Bent and bruised. Daily Driver.

Quote:
Screw patina... it's a beater...Beaters are cool.
my build thread - Project Homebrew:
http://67-72chevytrucks.com/vboard/s...d.php?t=242993
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Old 09-20-2007, 10:24 PM   #4
BCOWANWHEELS
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Re: exhaust port shape?

get a set of fel pro there half the cost at least and the best made for manifolds. run the engine for a day then re tighten them up again. use lock washers too grade 8
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Old 09-20-2007, 10:35 PM   #5
samwise68
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Re: exhaust port shape?

i'll definitely request fel-pro's then.

and don't worry. i've heard too many horror stories about people not tightening their exhaust bolts up. i'll be sure to make it a weekly thing after the intial tightening.

thanks again! they're going back next week. hahaha.
__________________
1969 GMC C1500. long fleet.
307. 3 on the tree. 3.07 gears.
Oliver green. Bent and bruised. Daily Driver.

Quote:
Screw patina... it's a beater...Beaters are cool.
my build thread - Project Homebrew:
http://67-72chevytrucks.com/vboard/s...d.php?t=242993
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Old 09-21-2007, 06:35 AM   #6
72armyswbtruck
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Re: exhaust port shape?

Darn, and I was gonna say pull the valve covers and check the head numbers.
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