'66 289 carburetor dilemma

O

oth

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Jul 24, 2004

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Jul 24, 2004

#1

• Jul 24, 2004

• #1

I've got a 66 289 and am not sure whether the engine is an A code or a C code because the tag is gone and key parts (like the intake manifold) are not original to the car (its part no. is C8AE-9425-B). I want a good stock carburetor for it (it's current 2v one is a mess) and am torn between the ponycarb. autolite 2100 and the autolite 4100. In terms of performance and reliability, is the 4100 worth the added expense of replacing the intake manifold?

 

D

D.Hearne

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Sep 29, 2000

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#2

• Jul 24, 2004

• #2

Performance wise the 4100 will beat the 2 bbl every time. As for relaibility, both are the same there, the 4100 is just two 2100's put together. My choice for a good reliable 2 bbl would be a Holley 350 or 500 cfm 2 bbl over the Autolite 2100 any time.

 

KillerKittyCat

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Aug 24, 2003

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Hammer Down - Behind The Wheel

Jul 24, 2004

#3

• Jul 24, 2004

• #3

My guess is that you have a C block. There is nothing wrong with that as most early Mustangs had that engine. What is your intention with the car? Do you want a reliable car or a HOTROD? Money is the only difference. I agree with D. Stay 2BBL. I have 312000+ miles on my 65 A block 4 speed and the only real modification I made was to go with Pertronix ignition. I just filled up last week after 283 miles and it took 9.3 gallons. You do the math.

Good luck!

 

D

D.Hearne

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#4

• Jul 24, 2004

• #4

Wait just a minute!!!, You must have one of those elusive secret carbs that made the rumor mill circuit 20 years or more ago. 30.4 MPG ? From a 289? How fast do you drive? 30-40 mph? What's the deal here?

 

MustangPaul

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Jun 20, 2002

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Jul 24, 2004

#5

• Jul 24, 2004

• #5

Can't beat a well tuned 4100. Got one on my GT. Had a Holley and disliked it. (Puts on flame-proof pants.)

I like knowing that the oomph is there when I need it. My 4100 is on a daily driver.

 

MustangPaul

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Jun 20, 2002

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South East Louisiana

Jul 24, 2004

#6

• Jul 24, 2004

• #6

D--He is running two sails, too, and some solar power backup.

I feel good when I can get 18! (Down hill, in neutral, with the wind at my back.)

--Paul

 

MustangPaul

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Jun 20, 2002

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Jul 24, 2004

#7

• Jul 24, 2004

• #7

MustangPaul said:

I feel good when I can get 18! (Down hill, in neutral, with the wind at my back.)

--Paul

Click to expand...

Of course, those of you in South Louisiana will know that this is a lie because
there are no hills here. Just levys to keep the mississippi in its banks.

--Paul

 

D

D.Hearne

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#8

• Jul 24, 2004

• #8

MustangPaul said:

D--He is running two sails, too, and some solar power backup.

I feel good when I can get 18! (Down hill, in neutral, with the wind at my back.)

--Paul

Click to expand...

Hills? When did they put in hills in Ponchatoula? Y'all got a new garbage dump ski area or somethin? I got 20 mpg out of a 69 E330 van once with a 302 and a Holley 500 2bbl. But that was between Cimarron and Clovis N.M. ( east bound, all down hill )

 

KillerKittyCat

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Aug 24, 2003

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Hammer Down - Behind The Wheel

Jul 24, 2004

#9

• Jul 24, 2004

• #9

D.Hearne said:

Wait just a minute!!!, You must have one of those elusive secret carbs that made the rumor mill circuit 20 years or more ago. 30.4 MPG ? From a 289? How fast do you drive? 30-40 mph? What's the deal here?

Click to expand...

D. 1965 A b- Edel 1405 - T-10 - 3.00 Auburn in the back- 205/70/R14 - plugs at .035- Pertronix ignition - BCTC 7 - single vacuum advance - compression was 125/128 last time I checked. That 140 MPH thing in the middle of my dash I have buried it. DSO San Jose. Isn't that where they got in trouble???
D. It's real. Why ????? My Kitty gets 9 mpg on a good day.

I commute to work each day at 35 miles. Three stop lights and four stop signs. All 55 mph.

 

MustangPaul

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South East Louisiana

Jul 24, 2004

#10

• Jul 24, 2004

• #10

D.Hearne said:

Hills? When did they put in hills in Ponchatoula? Y'all got a new garbage dump ski area or somethin?

Click to expand...

We do have an overpass that we can coast down. . . .

--P

 

R

Ronstang

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Apr 4, 2004

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Houston Texas

Jul 25, 2004

#11

• Jul 25, 2004

• #11

I used to get 24 mpg on the highway in my 66 coupe driving very conservatively at 55mph. The mods were a 4 bbl, Try-Ys with full 2" duals, and a good distributor. The car had a C-4 with 3.00 gears out back. I'm not sure about 30mpg with a stock A-code and 4 spd though, it doesn't sound believable to me. Maybe your speedometer is off some, that would be my guess.

 

D

D.Hearne

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Jul 25, 2004

#12

• Jul 25, 2004

• #12

Sounds to me like his speedo is way off too. especially with his claim of goijng over 140 in it, with a stock small block