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Author
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Topic: 85 Mustang carburetor modification
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JCQuinn@work
Gearhead Posts: 826
From: Lakewood, CO, USA
Registered: Jun 2001
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posted 05-18-2004 04:41 PM
   
In order to run my 85 as a Superstocker I have to use the factory carburetor. I have read that these carbs were not made user friendly for racers and am wondering if anyone has tinkered with them.John
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Moneymaker
Administrator Posts: 25883
From: Lyons, IL, USA
Registered: May 99
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posted 05-18-2004 04:58 PM
It's not that bad John.
Use typical Holley tricks.  ------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,& '04
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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JCQuinn@work
Gearhead Posts: 826
From: Lakewood, CO, USA
Registered: Jun 2001
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posted 05-18-2004 05:55 PM
Cool, ThanksJohn
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Rory McNeil
Gearhead Posts: 1542
From: Surrey, B.C. Canada
Registered: Nov 2000
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posted 05-19-2004 02:50 AM
Actually, I`ve found the Holley 4180 that was used on the 83-85 5.0 Mustangs to have a few quirks. First off, there are no idle mixture screws in the primary metering block, unlike the 4150/4160 Holleys. Instead, there is an idle mixture screw for each barrel, however they are in the base plate, & are sealed to prevent "tampering".I drilled a small hole in the bottom of the base plate for each mixture screw, & then picked out the plug, which provides access to the mixture screws with a small Allen key (don`t recall the correct size at the moment). There is also no idle speed screw in the base plate, rather idle speed is set with the dashpot. The secondary metering plate is different than a 4160 in shape, so they don`t interchange. Luckily these 4180 smog carbs are worth very little to most people. I have picked up several of these carbs at swap meets for $20.00 or less,so the swap meets are a decent source of these carbs. Good luck.------------------
78 Fairmont 428 4 speed 10.20@130mph
80 Fairmont 302 5 speed 12.8@105mph
85 Mustang NHRA M/Stock 302 5speed. [email protected]
59 Meteor (Canadian Ford) 2 dr sedan 332, auto
74 F350 ramp truck 390 4spd
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JCQuinn@work
Gearhead Posts: 826
From: Lakewood, CO, USA
Registered: Jun 2001
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posted 05-21-2004 10:57 AM
hanks Rory, I bought one off of E-bay for $33. I will have to find some swap meets to go to so I can get more of them even cheaper. When the ebay one gets here I will start playing.John
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mtkawboy
Journeyman Posts: 36
From: Billings Mt
Registered: Dec 2003
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posted 05-21-2004 12:54 PM
http://www.swcp.com/~dilts/mustangs/holley_4180/index.html Heres an article I came across while doing some research for a friend. It has a little usefull info
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TomP
Gearhead Posts: 5761
From: Delta BC Canada
Registered: Dec 99
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posted 05-22-2004 12:58 AM
I have one on my 5.0L Ranger, a swap meet cheapie... it runs great and much better than a normal Holley 600. I took all the choke stuff off mine and made a bracket so the idle speed screw has something to snub against.
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