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Reload this Page LB9 heads

TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

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Old 11-28-2007, 05:34 PM   #1
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LB9 heads
would LB9 heads b an upgrade for my lil LO3 or will they not work and waste my money?
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Old 11-29-2007, 12:08 AM   #2
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Re: LB9 heads
any body??
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Old 11-29-2007, 12:31 AM   #3
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Re: LB9 heads
Yes they would work but they're not worth swapping unless you have the engine out of the car.
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Old 11-29-2007, 01:18 PM   #4
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Re: LB9 heads
why is that?
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Old 11-29-2007, 10:26 PM   #5
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Re: LB9 heads
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Originally Posted by camaro55427 View Post
why is that?
There is NO power to be gained from the switch. Often times, it will cost you HP to put the stock TPI heads on.
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Old 11-29-2007, 11:28 PM   #6
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Re: LB9 heads
oh ok thanks
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Old 12-03-2007, 08:25 PM   #7
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Re: LB9 heads
The TPI and TBI heads are the same heads. You won't gain anything.
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Old 12-03-2007, 08:29 PM   #8
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Re: LB9 heads
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The TPI and TBI heads are the same heads. You won't gain anything.
NO they are NOT, GET your facts straight before posting false information. THe TBIs used 187 heads with swirl vanes in the intake ports. The TPIs used 416s or 081s which lack the intake swirl vanes.
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Old 12-04-2007, 08:53 AM   #9
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Re: LB9 heads
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Originally Posted by rs90 driver View Post
The TPI and TBI heads are the same heads.
Not true. Different castings (with different casting #s), and used for different purposes.

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You won't gain anything.
Probably true, stock versus stock.
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Reload this Page LB9 heads
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