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Re: HEI distributor tuning problem
Quote:
Originally Posted by JOJABOY
It's not exactly the same. When you rev your engine in park, the engine isn't under any load. So the vacuum is different. Short of hiding under your hood with a timing light while your wife takes the truck for a drive.....You can get a cheap $5 vacuum pump and pull the vac advance can in. This will simulate the intake creating different vacuum till all in.
Sure beats hanging on to the headers while straddling the fan and wife at the wheel.
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Bo wha'cha talking about?! its under load, the bed is slap full!!
The vacuum pump; just give it a couple pumps? that small advance can can't require to much vacuum?
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My youngest son and I picked up a 69 Chevy C-10 on 1/7/22, this is my second 69, it was 10 years ago that I had my other one. So I’m back!!! 
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