Engine vacuum
08-14-2017, 07:55 PM
#1
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Join Date: Dec 2003
Location: NY...what a bad place for a nice car
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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.
08-14-2017, 11:27 PM
#2
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Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 70,650
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.
08-15-2017, 06:02 AM
#3
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Re: Engine vacuum
it idles at anout 1k right now. Im still working out the tune.