vac. sec. to mech
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Junior Member
Joined: Feb 2002
Posts: 38
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From: se ohio
vac. sec. to mech
hey,,
I have a holley 750 dual feed carb,,,it has vac sec. and i want to know if i can make it manual secs. anyone have any ideas?
thanks
project=T/A
opps,,I mean mech secs.
sorry
I have a holley 750 dual feed carb,,,it has vac sec. and i want to know if i can make it manual secs. anyone have any ideas?
thanks
project=T/A
opps,,I mean mech secs.
sorry
Senior Member
Joined: Jul 1999
Posts: 760
Likes: 0
From: Chillicothe Ohio
Car: 89 RS 355/ 89 IROC Convert
Engine: Hot Cam 355/TPI 305
Transmission: All 700r4's
Hey I don't know about changing the carb however I read in Chevy Hi Po that they got a gain of about 15+ hp with a Double pumper over a Vac secondary..............I am using a street avenger vac second....
Hey where are you from in Ohio......I live in chillicothe.
Brian
Hey where are you from in Ohio......I live in chillicothe.
Brian
Supreme Member
Joined: Jul 1999
Posts: 2,010
Likes: 0
From: Homestead, Fla
nah you can't really. They don't have the provisions for the second pump.
VS carbs can be made to work with blowthrough turbo setups. you have to either enclose the whole carb in a box or boost reference the vacuum bell. Of course..you'd be much better off with a DP setup anyway. Less to worry about.
VS carbs can be made to work with blowthrough turbo setups. you have to either enclose the whole carb in a box or boost reference the vacuum bell. Of course..you'd be much better off with a DP setup anyway. Less to worry about.
Thread Starter
Junior Member
Joined: Feb 2002
Posts: 38
Likes: 0
From: se ohio
ok,,,I wasnt to concerned with the second acc.pump,,,I was just curious what it would take to mechanically open the secondaries,,
I was thinking that i would make the secondary jets real big to give the extra amount of fuel for the boost,,,I guess I just thought the big jets would make up for the pump not being there.
I already have a secondary block to use jets instead of the metering plate or whatever the thing that was there is.
How do u boost reference the vacuum horn anyway? I was just trying to save some money by not buying another carb,With the cost of the turbos and whatnot
vacuum bell i mean
my bad
I was thinking that i would make the secondary jets real big to give the extra amount of fuel for the boost,,,I guess I just thought the big jets would make up for the pump not being there.
I already have a secondary block to use jets instead of the metering plate or whatever the thing that was there is.
How do u boost reference the vacuum horn anyway? I was just trying to save some money by not buying another carb,With the cost of the turbos and whatnot
vacuum bell i mean
my bad
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