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Mod | | | Forums66 Topics128,052 Posts1,055,724 Members48,426 | | Most Online14,466
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!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | Joined: Oct 2001 Posts: 3,458 Extreme Gabster | | Extreme Gabster Joined: Oct 2001 Posts: 3,458 | Ok, I have in transit to me an Edmunds 2x2 intake and a set of Holley 2100/94 carbs (Like strombergs). I am ordering a set of adjustable main jets but I am also looking for suggestions as to what power valve closing vacuum I should use. I think original was 6.5 or 7 in single carb apps but Holley power valves are available down to 3. Any suggestions where to start? I am thinking 4.5 because that is half of seven and I am using 2 carbs. This is for a 235 with solid lifters and stock truck cam (I think). I am going to add a hotter cam later. The carbs are operated with each carb feeding 3 cylinders. The intake is water heated.
Paint & Body Shop moderator
A lone amateur built the Ark. A large group of professionals built the Titanic. | | | | | Joined: Feb 2001 Posts: 1,897 Member | | Member Joined: Feb 2001 Posts: 1,897 | 3.5 +3.5 =7  I do not have any answers for which ones to use in your carbs,,,,yet!
There is enough good in the worst of us and enough bad in the best of us that it does not behoove any of us to criticize the rest of us.
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Be yourself. If you are ever lost, It will be much easier to find yourself if you know who you are!
| | | | | Joined: Mar 2001 Posts: 77 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Mar 2001 Posts: 77 | start out by getting a uni sinc tool the jetting has come from sombody is current. the book by weber carbs "theory of carburation" is a realy good book and kay sisel and guys like him have some good books on carb tunning
i thinkzz traveling along at terminal velocity will soon wear a body out.
i will not die in shame if i never finish my dreams because my family iz my reality
can't wait until we can bed de ponys down, lite de fire, put on a big ol pot of coffee, and talk about how strong and brave our teams are.
bullfoot thinkszzzzzzzzzzz
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