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dual point distributors
#1
Hello All,

Just a distributor question for the experts out their.
I have a 73 Q code Cleveland. I have been led to believe that the Q code came
from the factory with a dual point distributor. Mine currently has single points.

I have been unable to find much documentation on this and have not been
able to locate a used one to try.

What's the story on this?

Tx in advance
Ray Q.

I guess the question I should also be asking is
Do I need the dual points?
What do I get performance wise.
It would seem that at high RPM there may be some benefit as the points cam is flying by so fast that
a single point setup may start missing firings.
That's just an educated guess on my part though.
Anyone have any theory out there regarding this?

  Reply
#2
I believe all 351 Cleveland Cobra Jets came with dual point distributors.
Many were replaced with single point distributors and the old ones were lost.

I might have some documentation. They are on ebay but usually pricey.

Ray



1971 Boss 351
1972 Q code 4 speed convertible
  Reply
#3
The "Q"code autos came with a single point distributor. I may be wrong, but I beleive the 4spd cars got the dual point. All the autos were single point for sure. Hope that helps!

[Image: 16kuyc0.jpg]
  Reply
#4
Q-code (Cobra-Jet)The Q-code "351 Cobra Jet" version was produced from May 1971 through the 1974 model year. It was a low-compression design that included open-chamber "4V" heads, a special intake manifold, special hi-lift long duration hydraulic camshaft, special valve springs and dampers, a 750 CFM 4300-D Motorcraft Carburetor, dual-point distributor, and 4-bolt main bearing caps. It was rated at 280 bhp (209 kW; 284 PS) for all 1971 applications; 266 hp (198 kW) (SAE net) for 1972 when installed in the Mustang and 248 hp (185 kW) in the Ford Torino and Mercury Montego. The horsepower rating dropped in 1973 to 246 hp (183 kW) for the 4-barrel for the intermediate Fords, and still retained the higher 266 hp (198 kW) rating in the Mustang. The 351 CJ (now referred to simply as the "351 4V") was rated at 255 hp (190 kW) in 1974 and was only installed in the Ford Ranchero, Ford Torino, Mercury Montego and the Mercury Cougar.

  Reply
#5
FastE;30072 Wrote:The "Q"code autos came with a single point distributor. I may be wrong, but I beleive the 4spd cars got the dual point. All the autos were single point for sure. Hope that helps!

+1. Confirmed in original service manual. Chuck
Topless73Qcode4SPD;30054 Wrote:Hello All,

Just a distributor question for the experts out their.
I have a 73 Q code Cleveland. I have been led to believe that the Q code came
from the factory with a dual point distributor. Mine currently has single points.

I have been unable to find much documentation on this and have not been
able to locate a used one to try.

What's the story on this?

Tx in advance
Ray Q.
One book I have lists 1973, 351 4v, manual transmission having an ID number of D3PE-12127-PA. Service replacement, D3PZ-12127-P. Don't know if that helps any. Chuck
  Reply
#6
Back in the days, dual points were just twice the problem a single points was and so some would just replace with single points.
  Reply
#7
I guess the question I should also be asking is
Do I need the dual points?
What do I get performance wise.
It would seem that at high RPM there may be some benefit as the points cam is flying by so fast that
a single point setup may start missing firings.
That's just an educated guess on my part though.
Anyone have any theory out there regarding this?
  Reply
#8
I would just put in Pertronix electronic points. It's MUCH more reliable and you don't
need to adjust or replace points anymore. Plus it all fits under the stock dist cap so nobody can tell.

1971 Mach1
351C-4v
C6 is history-->>now TKO-500
  Reply
#9
My "one owner" '73 351CJ (Q Code) Mach I came from the factory with single points.

In my neck of the woods, the going thing was to replace the single points with a dual point set-up. This is what I did in the form of a Mallory unit. Nowadays, it supposedly makes no sense utilizing this old (points) technology as there are so many much better electronic systems on the market.

As one of the posters indicated and/or inferred, a lot of people are using the Petronix. I am using one of their units in my 472 Grandé.

Hope this helps.

BT

Do the RIGHT thing.
  Reply
#10
The Petronix units also come in single or dual point flavors and I plan to convert.
I guess I'll stay on the lookout for an original Ford dual point unit for 73.
Id like to keep the engine looking as original as possible.
Tnfastbk;30074 Wrote:Q-code (Cobra-Jet)The Q-code "351 Cobra Jet" version was produced from May 1971 through the 1974 model year. It was a low-compression design that included open-chamber "4V" heads, a special intake manifold, special hi-lift long duration hydraulic camshaft, special valve springs and dampers, a 750 CFM 4300-D Motorcraft Carburetor, dual-point distributor, and 4-bolt main bearing caps. It was rated at 280 bhp (209 kW; 284 PS) for all 1971 applications; 266 hp (198 kW) (SAE net) for 1972 when installed in the Mustang and 248 hp (185 kW) in the Ford Torino and Mercury Montego. The horsepower rating dropped in 1973 to 246 hp (183 kW) for the 4-barrel for the intermediate Fords, and still retained the higher 266 hp (198 kW) rating in the Mustang. The 351 CJ (now referred to simply as the "351 4V") was rated at 255 hp (190 kW) in 1974 and was only installed in the Ford Ranchero, Ford Torino, Mercury Montego and the Mercury Cougar.

Excellent info....

Tx
  Reply
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