hood clearance

[SSDiv6]

Originally Posted by Myron Piatek

The more, the better. But I have less than 1.5" with no apparent issues and that's with the air cleaner assembly removed! FWIW, I recently browsed through a book by Smokey Yunick and 3/4" was mentioned as being the absolute minimum. Don't know if some carb's are more sensitive than others. I have a Holley. Underhood airflow/turbulence may have an affect with a aircleaner baseplate being helpful.

With early cars that have a lot of reinforcement under the hood, you can go with less. Later model hoods, and/or fiberglass hoods, can bow at high speeds reducing the clearance.