Which came first, Tri Power or Six Pack?

[Dodge-Charger]

nice 65, is that yours?

Yes it is, second owner. I bought it from my dad. It is in line to be restored.

[Ghoste]

Yes, gearheads know about the Poncho Tripowers but outside of us I bet the Six Pack is better known.  I even find a lot of people who do know about the Pontiacs refer to it as a Six Pack.  As mentioned, even the Plymouth guys will do that often. 
I still think the Dodge version became much more famous as time has progressed.

[hemihead]

The Dodge is more famous because the name is more easily associated and remembered.

[BrianShaughnessy]

All big 3 companies had some version of tri-power / six pack at one time or another.   But I'm pretty sure that the 440 Six Pack setup is the most famous of them all.    The goat 389 setup is pretty famous in it's own right.  427 Vettes and FE Ferds too.   The problem with all the rest was that the manifolds didn't flow all that well.

Either way... the 440 Six Pack was the LAST American factory multi carb setup.   I don't want somebody to mention some ricebucket or silly English thing just to bust my balls. 

[6pkrunner]

The Dodge is more famous because the name is more easily associated and remembered.

Exactly! Who really uses the term six-barrel except die hard Plymouth fans?  The term six-pack is just ingrained like Ski-Doo for snowmobiles.
Tri-powered Chevs and Ponchos were running around over a decade before Hoover and company thought about putting them on the Magnum. They actually wanted special heads and to go to the 276/292 cam, but the 440 lost more bottom end than was gained on the top end so the 268/284 cam was retained and costs negated any new heads for the 440. Because the 933 street hemi valve springs were eating the lobes of the standard cams in 10,000 miles or so in 1970 a slight taper was ground onto the lobes so the lifter would rotate in its bore and lessen the rubbing factor on the cam lobe. Typical Mopar cleverness.

[bull]

The Dodge is more famous because the name is more easily associated and remembered.

Exactly! Who really uses the term six-barrel except die hard Plymouth fans?  The term six-pack is just ingrained like Ski-Doo for snowmobiles. Typical Mopar cleverness.

Yea, except when it comes to rear ends. When I talk about my Charger with people they often ask, "Does it have Posi?" I say no, it has Sure-Grip.

[Chryco Psycho]

the first use of 3 x2 bbls is the 58 T bird , I have not found anyhting earlier so far

[Johnny SixPack]

Pontiac used a 3x2 in "57:

347

For 1957 the V8's stroke was increased to 3.56 in (90.4 mm), for a displacement of 347 cu. in. (5.7 L). For the first time, Pontiac offered Tri-Power, three two-barrel carburetors with a sequential linkage (replacing the previous dual-quad set-up). Power ratings increased accordingly:

(with manual transmission)

two-barrel carburetor, 8.5:1 compression, 227 hp (169 kW) @ 4600 rpm, 333 lbf·ft (451 N·m) @ 2300 rpm
four-barrel carburetor, 10:1 compression, 244 hp (182 kW) @ 4800 rpm, 350 lbf·ft (475 N·m) @ 2600 rpm
(with Hydramatic)

two-barrel carburetor, 10.0:1 compression, 244 hp (182 kW) @ 4800 rpm, 350 lbf·ft (475 N·m) @ 2600 rpm
four-barrel carburetor, 10.0:1 compression, 270 hp (201 kW) @ 4800 rpm, 359 lbf·ft (487 N·m) @ 2900 rpm
three two-barrel carburetors, 10.00:1 compression, 290 hp (216 kW) @ 5000 rpm, 375 lbf·ft (508 N·m) @ 2800 rpm.

Information found here: LINK

[hemihead]

When a Mopar(?) guy tells me he has a Posi rear, I say"Did you put a GM rear in that?" 

[Ghoste]

Until a Ford or GM gets 210,000 for a 3X2 setup at B-J, the Dodge is the better known version.