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  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

im almost embarassed to ask......

  • Thread starter Thread starter FasterThenU72
  • Start date Start date Dec 16, 2004

FasterThenU72

New Member
Nov 2, 2004
108
0
0
Orange County, CA
Dec 16, 2004
#1
  • Dec 16, 2004
  • #1
ok look i switched from a 2 bbl carb and manifold on a 72 302, to a 4bbl edelbrock F4B (high rise) and a 600 holley. nothing fancy right.......now i need to know on the holley there is obviously the fuel inlet.....and another inlet or outlet on the lower passenger side of the carb....what is that for? On my old 2bbl i had a little hard line running from the exhaust manifold to a little port that looks to be like or something near the same thing as on the holley but im not sure.....essentially i need to know what that little port on the passenger side of holley is for? Sorry for being a rook at this stuff....
 

Great68

Founding Member
May 16, 2002
691
0
16
Victoria BC
Dec 17, 2004
#2
  • Dec 17, 2004
  • #2
Vacuum ports?
 

2bav8

Founding Member
Nov 30, 1998
2,511
1
47
Mesa, AZ
Dec 17, 2004
#3
  • Dec 17, 2004
  • #3
Sometimes a picture is worth a 1,000 words.
 

Skymarshal

Member
Nov 5, 2004
572
0
16
Dallas
Dec 17, 2004
#4
  • Dec 17, 2004
  • #4
It's the choke tube.

It pipes warm air from the exhaust manifold to a temperature-sensitive coil of metal in the little drum on the carb. When the engine warms up enough, the coil opens the choke plate and lets the engine run normally.

Make sure the tube is installed and operating correctly, or your choke will probably never open, resulting in power loss and a rich mixture!
 
D

D.Hearne

New Member
Sep 29, 2000
11,730
6
0
south louisiana
Dec 17, 2004
#5
  • Dec 17, 2004
  • #5
Ditch the choke altogether, I doubt you need it in sunny S. California. If that connection you're asking about fits a 3/8 hose, then that's the PCV port. The port on the rightside of the main metering block is for the vacuum advance. By the way ------ Good choice of intakes. The old F4B may be old, but it's still a good one, just as good if not better than the newer Performer RPM.
 

ratio411

Founding Member
Apr 21, 2002
3,870
73
109
Pensacola FL
Dec 17, 2004
#6
  • Dec 17, 2004
  • #6
A pic would be great with a question like this.
The second option would be posting the part number.
It is hard to get a good answer when folks don't even know what 600 Holley you are working on. There are a huge number of possibilities and variables among 600 Holleys.
Dave
 

FasterThenU72

New Member
Nov 2, 2004
108
0
0
Orange County, CA
Dec 17, 2004
#7
  • Dec 17, 2004
  • #7
alright check this out, ill try to get a pic posted by tonight my time or during the day......so yall can solve this stuff and i can be focused in skool instead of thinkin bout this ride......you know sometimes i think real mustangs out on the prairie are easier to tame......
 
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