Mercury Cougar Owners banner
1 - 9 of 9 Posts

· Registered
Joined
·
962 Posts
I personally like Holley's just about plug and play. I didn't see in the spec's if this was a spread bore carb, if its the original intake you'll need a spread bore carb.

On My 73 Q 351 I went with a Holley 670 (80670) and an EDL 2665 manifold. Very happy with the setup (square bore)
 
  • Like
Reactions: VietVet

· Super Moderator
Joined
·
11,036 Posts
  • Like
Reactions: VietVet

· Registered
Joined
·
9 Posts
Yes , it will work well , same carburetor I had on my 72 Q code car . They have a gasket that lets the square bore work fine on the stock intake , you will also have to block the choke passage and run the electric choke over to the starter relay by the battery
 

· Registered
Joined
·
962 Posts
Well finally someone who has used the square to spread bore adapter on a phatcat (71/73).There have been many conversations about this in the past and I was always a doubter. Still not a fan but thanks for posting your experience, good to know
 

· Registered
Joined
·
9 Posts
Well finally someone who has used the square to spread bore adapter on a phatcat (71/73).There have been many conversations about this in the past and I was always a doubter. Still not a fan but thanks for posting your experience, good to know
When I purchased the car , this august the previous owner had it done recently, he was unable to get the original carburetor tuned well . I had the factory carb rebuilt by a specialist here and will be putting in back on . Not that the Holley did not work well , rather I kinda want to keep it original if I am successful in getting the original carb to work like it should.
 

· Registered
Joined
·
9 Posts
I personally like Holley's just about plug and play. I didn't see in the spec's if this was a spread bore carb, if its the original intake you'll need a spread bore carb.

On My 73 Q 351 I went with a Holley 670 (80670) and an EDL 2665 manifold. Very happy with the setup (square bore)
Make sure you have that Q code car in the CCOA registry ! 👍
 

· Registered
Joined
·
962 Posts
When I purchased the car , this august the previous owner had it done recently, he was unable to get the original carburetor tuned well . I had the factory carb rebuilt by a specialist here and will be putting in back on . Not that the Holley did not work well , rather I kinda want to keep it original if I am successful in getting the original carb to work like it should.
When I bought my 73 it had the 4300 D carb on it, I'm no carb guru and I ended up rebuilding it every 6 months or so because it started acting up. Yea I know they're finicky. I run AV-Gas in mine since its a Vert and only goes out on sunny clear days :LOL: I went with the new Holley and EDL manifold (mentioned previously) and have never looked back. Nothing wrong with keeping it as original as ya can
 
1 - 9 of 9 Posts
Top