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Generation III Internal Engine
How much vacuum at idle?

Generation III Internal Engine 1997-2006 LS1 | LS6

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How much vacuum at idle?

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Apr 4, 2004 | 08:23 PM

#1

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From: St Joe, MO

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How much vacuum at idle?

This kinda borderlines internal/external. So how much vacuum should there be at idle with heads and cam, no forced induction?

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Apr 4, 2004 | 09:56 PM

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Depends on the cam specs.

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Apr 5, 2004 | 07:32 AM

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224/224 0.581/0.581 112, using the factory rockers

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Apr 5, 2004 | 09:48 AM

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Tony Mamo @ AFR

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Vacuum....

Quote:

Originally Posted by JoeyGC5

224/224 0.581/0.581 112, using the factory rockers

With a good tune and the idle slightly raised, you would probably have around 15". Has close to 16 with a smoother 114 LSA and the same lobes.

Hope this helps you out...

Tony M.

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Apr 5, 2004 | 10:00 AM

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I run a 224/228 with 112LSA and get between 15-16 inches of vacuum at idle. I hope this helps

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Apr 5, 2004 | 10:08 AM

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From: St Joe, MO

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Cool, thank you guys!

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affects, bbc, idel, idle, ls1, ls1tech, vaccuum, vacuum

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