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What are these for???

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May 25, 2008 | 07:12 PM

#1

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From: Lowell, Michigan

Car: 1988 Trans Am, 2005 Sierra 2500

Engine: Vortec 357

Transmission: Built TH700R4 with 26-2800 Stall

Axle/Gears: GM 10 bolt 3.73 Posi

What are these for???

when i was changing my EGR valve this weekend i have always wondered what these 2 big hex bolts where for on the front of the intake manifold. Are these used to increase or decrease airflow through the manifold or what? im not sure so im going out on a ledge.

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May 25, 2008 | 10:59 PM

#2

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From: Rowlett, TX

Car: 1988 GTA

Engine: 5.0 TPI

Transmission: T5

Axle/Gears: 9 Bolt, 3.45

Re: What are these for???

Probably for other applications, since that intake came on many cars and trucks, and possibly even marine applications.

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mechanical, redline, rowlett, tx

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