Street - Holley

Use our simple CFM calculator to learn what CFM you need:

Your engine's cubic inches Your expected maximum RPM (Redline)

Stock Engine

Mildly Modified

Highly Modified

Your ideal CFM range is XXX.

You should stay as close as you can to this CFM and should go no more than 50 CFM in either direction.

If you have any other questions, contact Tech Service at

1-866-464-6553

How to pick a choke:

Manual chokes allow the user to control the warm up of their engine by physically pulling a cable inside the vehicle to control the choke plate. This type of choke is generally less expensive than an electric choke.

Electric chokes fully handle the warm up of your engine without your assistance. They operate off a single 12 volt switched power wire from your vehicle.