I've never had a vacuum gauge on mine... locked out timing, manual 4 wheel discs.
This cam has a mile of lobe separation and overlap so likely not a lot of vacuum but only 5-1/2" sounds fishy.
I chose this cam to kill some bottom end power for better launches on the street. Ask my friend with the 10 second 540 Camaro how well it works. Ha Ha
He gets the last laugh at the track on slicks though.
|