Holley Jet size

Kendog 170 said

Thanks for the response Gives me something to to start with. I'm no pro but will will start 1st checking the power valve . 15" vac. #8 valve.Then go from there with jetting. I am now definitely too lean with current carb. which 1st leads me to think I had a vac. leak. But don't think that's the case as 15 is about right with stock ( I think ) cam . If I had $$$ I should have upgraded cam (just replaced lifters). All I did was inspect measure for wear and re-used.Motor sounds sweet with 160 psi Comp. check.

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1. Get the List number from the choke tower (assuming it has one) if not it will be on top. Then you can look up the basic factory specs on Holley's Carb list.
2. Start a logbook or build sheet.
3. Check the floats. This determines the fuel level and is the first thing that has to be checked. If you have a chance, take pics of the metering blocks.
4. Turn the carb upside down and turn the throttle screw until the throttle is closed. Turn it in until it just touches and count how many turns until 0.020" of the transition slots show. Write that number down. Count how many turns of the screw is needed to get .030 and .040 visible. Write those numbers down.
Now you're ready to go try the carb out.