Quote:
Originally Posted by Bobcat
Dan , as Barry mentioned , you will have to spend some time sorting out the 1850`s . That`s why I had mine modified .... every circuit is tunable from idle to hi speed . The secondary throttle plates are adjustable , but you have to turn the carb upside down to get to them . It`s a small screw and sometimes they can get frozen and have to be broken loose . Follow what Barry said and you`ll be ok . PB Blaster can be your best friend here .
The .020" Barry mentioned on the primaries .... don`t try to actually measure ... I found that if the slot opening looks like a small square , then that is very close to the .020" .
Make sure the butterflies don`t hang up on the intake at full throttle .... cycle them before starting the motor if you have had the carbs off .
Bob
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Thanks - I'm fairly familiar with that much tuning on Holley carbs anyway, after sorting out the issues on my 66 Corvette with a replacement L88 motor. The cam was too much to prevent uncovering the idle slots and losing ability to tune the idle. I ended up drilling the primary throttle plates to compensate. Later, I realized the secondary throttle plate setting was adjustable and could be used to slightly open them and avoid drilling the pri-plates. But, anyway drilling the plates did work, it's fully tunable and runs very well.
These are all brand new carbs, fuel log, linkage, even the manifold was professionally restored and re-skinned. Shouldn't be any frozen or worn out parts to deal with.