Engine vacuum
Thread Starter
Registered User
Joined: Dec 2003
Posts: 2,315
From: NY...what a bad place for a nice car
Engine vacuum
What kind of engine vacuum are you guys seeing with larger cams.
currently i have a 234/244 110 lsa looking at 7 to 10inches at about 1k idle
thanks.
currently i have a 234/244 110 lsa looking at 7 to 10inches at about 1k idle
thanks.
Administrator
Joined: Nov 1998
Posts: 71,086
From: Hell was full so they sent me to NJ
Re: Engine vacuum
What is the displacement of the engine? "Large" for a 350 will not be as "large" in a 383. It's the narrowed LSA that leads to high overlap and loss of vacuum. My 230/242 114° (N2O cam) 0.590/0.590 solid roller in a 381 pulls ~15-16 "Hg at 800 RPM idle.
Thread Starter
Registered User
Joined: Dec 2003
Posts: 2,315
From: NY...what a bad place for a nice car
Re: Engine vacuum
it idles at anout 1k right now. Im still working out the tune.