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Aug 3, 2007 | 09:31 PM

#1

COLEnMICHAELS66

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Senior User

Joined: Dec 2005

Posts: 216

Likes: 0

From: boondocks, tennessee

what is this?

this is a pic of my head, its a 79 400. my quetion is what is the round hole right in the middle between the intake ports. it is not covered by the intake manifold. there is one on each head and the hole is only about an inch deep. its kind of an eyesore.

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Old

Aug 3, 2007 | 09:57 PM

#2

53fatfndr

Cargo Master

Joined: May 2003

Posts: 2,561

Likes: 1

From: Earth

Your picture isn't showing up, but from your description it sounds like the exhaust crossover. There is a description on bubbaf250's website:

http://home.earthlink.net/~bubbaf250/parts/pics03.html

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Old

Aug 3, 2007 | 10:10 PM

#3

COLEnMICHAELS66

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Senior User

Joined: Dec 2005

Posts: 216

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From: boondocks, tennessee

ok that website helped. what i'm talking about is the exhaust crossover cooling hole. its an ugly hole but i guess i can't plug it

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Old

Aug 6, 2007 | 09:40 AM

#4

beartracks

Lead Driver

Joined: Nov 2000

Posts: 6,623

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From: Albuquerque

The exhaust cross over warms the floor on the intake manifold for better fuel atomizing. You can block it but it wont warm up as fast in the winter.

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