We recently picked up a 1986 F250 with a 351, and it looks not to have a 4bbl but a Variable Venturi carb? Did ford use these in the 1986's? The truck is quite hacked under the hood so it could have been changed..
Anyway its giving me some problems, acting like the choke is sticking..

Whats the cheapest way to get a new carb on this thing? rebuilt?
anyone know a good supplier, or have a place for a decent used one?
(Low buget truck)

thanks

-Bill

 

What is that? Are you talking about a Stromberg or an SU type carb? If so that's no Ford thing. I'm interested.

See if you can post some data off the carb, or a photo??

 

I can take a photo when I get home, but it looks just like this (exactly)

http://temp.corvetteforum.net/c3/bans25//3a_1.jpg

 

i once had an old Philly cop car [84 crown victoria] w/351 w &a variable venturi carb.once i got it rebuilt it performed great.many cop cars built by ford w/351w had these carbs.

 

ford used the variable venturie carb on 302 & 351 back in 79-85.The picture is of one. I havent seen one in years and I dont think they ever put one in a truck.This was a fuel saving attempt by ford .They work good when they work.

 

I had a VV carb on my 84 4x4. it came from the factory that way. It ran well for about a year and then was nothing but trouble. you can replace them with a normal carb but it is a pain in the rear. I fixed mine by selling the whole truck.
Dave

 

My '83 Ford Light Truck Shop Manual (Engine) contains all the information you should need on the Motorcraft Model 7200 VV Feedback Carburetor. It looks just like the picture you provided so obviously some Ford trucks were so equipped. Works with the EEC-III control module. You really need a Ford shop manual but for a start try this link: https://www1.autozone.com/servlet/Ui...3d80173839.jsp

 

Ford used the varibal venturi carb on 86 modle 351 had one in 86 crown vic that was cop car.

 

That carb is a 7200 VV- had one on my 83 150.
Looked around for rebuilts but WAY too much money. At that time (89) holley offered a 2bbl that met california requirements and was compatible with the computer for 250.00. Two biggest probs on the vv are TPS and a stepper motor. If you are going to work on that you Really need a book!

 

Found a good site for the VV. http://aarc.epnet.com/application/85...12__Motorc.htm

The 2700 VV predates the electronic feedback business, the 7200 VV is the later one. It does say that 'special tools' are required.

 

Try this- www.autozone.com/servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/10/35/05/0900823d80103505.jsp
A little more info. copy and paste

 

Sorry, link didn't work for me.................

 

Yeah it only highlighted the first part, copy and paste the entire address - should work. Also I found an old post-"Holley made / possibly still makes a direct replacement for that carb. accepts factory wire and is smog compliant. Seems like I paid about $250.00 for it. I bought one about ten years ago . I just looked at the holley website, they had this carb listed as a reman with part# 64-5589."

 

I have a Variable Venturi right now on my '82 LTD. Other than the fact that the choke is not functioning, it works okay. Super throttle response. I bought a Factory Ford service manual from eBay, it has everything you need to get a VV running like new. By the way, VV have a lot less parts than a normal carb, they are just so different everyone thinks they are crap. The carb is original on my '82, and it has never been rebuilt. The variable venturi was used up to '89, possibly '91 on P72 Crown Victoria's with the 351W option.

 

The choke isn't working on mine either.. what did you do to keep it open? There seems to be a couple levers in that area, not sure which one to keep open..