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Old Apr 12, 2022 | 03:54 PM
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How much vacuum should a 1970 lt-1 engine make at idle? Thanks.
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Old Apr 12, 2022 | 04:09 PM
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I asked this same question several weeks ago when troubleshooting a rich idle condition on a 1971 LT-1. I was getting 10 inches at idle. After getting all the 'bugs' out of the carb so that it would idle properly the vacuum steadied out at 13 inches at idle.
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Old Apr 12, 2022 | 04:34 PM
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Originally Posted by Mobifire
How much vacuum should a 1970 lt-1 engine make at idle? Thanks.

From my 70 LT-1 when i was checking last summer.
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Old Apr 12, 2022 | 05:36 PM
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I'm just a beginner but does this help ?
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