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LS1 / LS6 Intake need help

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Old Jun 19, 2009 | 08:35 PM
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Default LS1 / LS6 Intake need help
i own a 99 T/A with a stock intake. P/N 12560688. I just recieved an intake and throttle body from a guy down here, the intake P/N is 12573572. Is this an LS6 intake? The base is flat if that helps, my stock has a hump. Also the other intake has a hole after the throttle body mount and i dont know how i can fill it. Any help would be greatly appreciated, i just bought my car 3 months ago and its my first LS based motor.
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Old Jun 19, 2009 | 08:38 PM
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Yes thats a ls6 intake, The flat bottom, and no hole behind the throttle body for the egr.
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Old Jun 19, 2009 | 08:42 PM
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Another question i can buy the heads off the motor this intake came from for $100. Should i shell out the cash, the heads are in good shape.
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Old Jun 19, 2009 | 08:58 PM
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What heads are on that engine? Casting #?
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Old Jun 19, 2009 | 09:15 PM
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my bet is 241's
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Old Jun 20, 2009 | 01:13 PM
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The heads on my car are 853 i think. i dont know what 241s are. What do the numbers mean?
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Old Jun 20, 2009 | 02:18 PM
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Look where the red circle on my head is, that is where you'll see the casting #.
Attached Thumbnails LS1 / LS6 Intake need help-castig.jpg  
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Old Jun 20, 2009 | 07:25 PM
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what does that 3 digit casting number mean?
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Old Jun 20, 2009 | 11:34 PM
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It the differnt casting #'s for the differant years and engines. https://ls1tech.com/forums/1740922-post41.html
If its got the 243's I would go for it and maybe throw another couple hundred at them for a port/polish.
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