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Hq Offline
#1 Posted : Wednesday, 13 January 2021 7:49:20 PM(UTC)
Hq

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How much vacuum should a standard 186 have at idle compared to a 186 with a stage 3 cam?
I’ve got 17” hg at idle
Dr Terry Offline
#2 Posted : Thursday, 14 January 2021 8:07:12 AM(UTC)
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Normal idle vacuum for a stock 186 should be around 19-inches.

The bigger the cam, the lower vacuum. A big cam will have a low vacuum at idle.

Stage 3 cam doesn't mean much these days, that's very much a 70s thing.

It's the actually the duration & lift that is important.

Dr Terry
If at first you don't succeed, just call it Version 1.0
Hq Offline
#3 Posted : Thursday, 14 January 2021 7:04:05 PM(UTC)
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New Zealand

Originally Posted by: Dr Terry Go to Quoted Post
Normal idle vacuum for a stock 186 should be around 19-inches.

The bigger the cam, the lower vacuum. A big cam will have a low vacuum at idle.

Stage 3 cam doesn't mean much these days, that's very much a 70s thing.

It's the actually the duration & lift that is important.

Dr Terry


https://www.ebay.com.au/...T-EPC1321-/183468266577

That’s the cam there, yes I know it’s not a good brand 😬
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