73 scamp

Welcome to the site!

I haven't heard of a carb that has no tuning adjustments. I'm not a Holley expert but it's got to have similar adjustment screws (idle mixture screws and idle speed screw) and jets that a Eddy/carter carb has? Just because it's brand new doesn't mean it doesn't need tuning. If I buy a brand new TV and just take it out of the box, I won't see a picture on the screen until I also plug it in for power and then provide it with a signal. In the old days, just plugging in the rabbit ears for the TV wouldn't be enough either. You'd have to move the antenna to then get the clearest picture. You need to do the same with the Holley carb. I agree with you in that it's not a bad carb as it can be tuned to run well!

Also, just because the tires were bought new from a store and installed last month doesn't mean they are brand new. Yes, they may never have been sold and installed on rims before but when were they manufactured? Some tires sit on store and warehouse shelves for years before they are purchased. Check the DOT code on each tire as it will tell you what week and year they were made.

Determining the Age of a Tire

While it's hard to tell for sure from the angle of the picture you post and it also could depend on the tire size you're running, your Scamp appears to be sitting pretty low; is the car resting on the lower control arm rubber/bump stop?