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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Sep 2005 Posts: 1,028 'Bolter | | 'Bolter Joined: Sep 2005 Posts: 1,028 | I got the truck out on the highway today. First itme after install of the HEI I got 61 MPH out of a 53 3600 with a 216 and foru on the floor.
I was very impressed. I did a vac check and the gauge needle is shakey. I think that means valve issues. I will ruin it a lot int he next few weeks to see if they are just sticky form sitting. If no improbement I will look furthe rinto adjustments and sela replacement.
Any thoughts on this? Any chance this will improve on its own?
Rich
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