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12-13-2006, 11:41 PM
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#1 |
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Registered User
Join Date: Nov 2006
Location: Illinois
Posts: 306
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2 Barrel Hei Guys
I have converted my 67 over to hei. The truck looks to have the factory intake and 2-barrel carb. Where can i hook up the vac advance hose? I am trying to get away from having to put my rpm and holley 600 on it due to wanting better gas mileage.
The carb from what i can see only has 1 port and its full vacuum. There is a threaded port on the back of the carb but thats for power brakes. And there is a port on the intake for the tranny. What should i do? |
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12-13-2006, 11:58 PM
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#2 |
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Senior Member
 
Join Date: Sep 2005
Location: Lewisville, Nc
Posts: 10,238
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Re: 2 Barrel Hei Guys
get adapters like for coming out of carb piece of hose then a T fitting or something
__________________
David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube |
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12-14-2006, 12:01 AM
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#3 |
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Senior Member
 
Join Date: Jul 2006
Location: Leander, Texas
Posts: 850
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Re: 2 Barrel Hei Guys
Hmm.....
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12-14-2006, 12:32 AM
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#4 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Re: 2 Barrel Hei Guys
a 4 bbl will get better MPG if you keep your foot out of it
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12-14-2006, 12:36 AM
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#5 |
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Registered User
Join Date: Nov 2006
Location: Illinois
Posts: 306
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Re: 2 Barrel Hei Guys
You dont want full port vacuum right off the bat for the hei or am i wrong??
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12-14-2006, 12:36 AM
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#6 |
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Designated A-hole!
Join Date: Mar 2003
Location: South Mississippi
Posts: 36,448
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Re: 2 Barrel Hei Guys
That's a big IF.
__________________
"If it ain't broke, fix it 'til it is!" Being stupid ain't illegal.  We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck" |
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12-14-2006, 12:55 AM
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#7 |
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Dave's not here, man
Join Date: Jun 2004
Location: Winder, Georgia
Posts: 2,000
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Re: 2 Barrel Hei Guys
Here is where I've run mine. This isn't the greatest picture, but you get the general idea. There is a metal 3/8" line that threads into the carb. for vacuum. Not sure if this is "full port", but it's worked flawlessly for me.
__________________
- 2014 VW Jetta - 2015 VW Jetta - 1966 Ford F-250 Last edited by dave2953; 12-14-2006 at 01:00 AM. |
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12-14-2006, 01:21 AM
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#8 |
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Registered User
Join Date: Feb 2004
Location: Idaho
Posts: 4,033
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Re: 2 Barrel Hei Guys
Get a 4 Barrel......................
__________________
"Remember, They can Kill You, but they can't eat You, That's against the law!!!!!!!!!" |
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12-14-2006, 01:35 AM
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#9 |
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Registered User
Join Date: Dec 2003
Location: here
Posts: 5,789
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Re: 2 Barrel Hei Guys
Isnt the "carb vac/manifold vac" decision more of a performance tuning deal? Ive had a ton of old vehicles where I did the "find a vac outlet & hook it up" trick with no issues at all. I read these post & wonder if some of these guys are losing sleep over nothing...
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