59 352/4 carb

[dbandgb]

Is the four barrel carb vacuum or manual to open when pressing the pedal? Stock Galaxie 59. Thanks

[40 Deluxe]

Vacuum diaphragm on the back of the carb.

[dbandgb]

Originally Posted by 40 Deluxe

Vacuum diaphragm on the back of the carb.

Thanks for the reply. I just bought this car and it isn't delivered yet. Back in 59 I bought a new galaxie convert with a 332 in it. I changed the carb and manifold to a 4 barrel. It also was vacuum operated and it was a dog, say off the line. So I suppose this will be the same.

[5851a]

The car was heavy, engine small and a ridicules high rear end gears with an automatic, 2.65 or some thing like that. Had a 332 4v and cruise o matic. Slow in town agree.

[miker98038]

You want to see a real bog, take that combo and put with a manual secondary on it. Full throttle from a stop gets nothing. Learned that driving a tri power on my first y block. This assumes the secondary vacuum unit (or air valve on other designs) is working properly.

[40 Deluxe]

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Originally Posted by dbandgb

Thanks for the reply. I just bought this car and it isn't delivered yet. Back in 59 I bought a new galaxie convert with a 332 in it. I changed the carb and manifold to a 4 barrel. It also was vacuum operated and it was a dog, say off the line. So I suppose this will be the same.

With vacuum operated secondaries the rears do not open until the engine needs the extra airflow (maybe above 4,000 RPM) so off the line your 4 barrel carb is functioning just like a two barrel carb.
As mentioned in another post, rear axle ratio is a major factor. Plus, if your '59 Galaxie was an automatic it normally started out in 2nd gear unless you manually shifted it.

[Gene F]

Originally Posted by miker98038

You want to see a real bog, take that combo and put with a manual secondary on it. Full throttle from a stop gets nothing. Learned that driving a tri power on my first y block. This assumes the secondary vacuum unit (or air valve on other designs) is working properly.

My tri-power doesn't start to open secondary carbs till about 60% throttle. I have the factory optional gear in the rear end. Took a lot of doing to get that point of opening, and then be able to get them 100% open at full throttle.

[Ford blue blood]

Short/long story about tri-powers. 73 F100, 360/granny 4/3.55 gave a good solid 12MPG under any driving condition. Put a Galaxie tri-power and headers on the engine, jetted the carbs down a bunch and it ran like a champ. The progressive linkage was perfect. Interestingly the set up raised the MPG to 15 as long as I kept my foot off the long pedal!

[Gene F]

I have no idea what highway mileage is on my car now. Heck it was 12MPG at 70MPH before, so I figured why not. LOL