Quote:

Quote:

the 284-484 wont make enough vacuum for power brakes. Its 248* @.050" and ground on a tight 108 lsa.



284/484 is 241* at .050
292/508 is 248* at .050



Is that advertised or measured ? I think someone here measure a 484 and a 509 and came up with 248* and 254* respectively.