Anybody Actually Goin' Fast With a Holley 3 BBL?

[12secHonda]

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Interestingly enough, Mark Hasset Jr brought a wide band 02 setup to tune the Phase III car with at this year's SCR. I really think it's a nice way to tune A/F whether we're talking EFI or carbs. Unfortunately, they broke a pushrod and did not get far on the tune.

Now I beleive Mark's Phase III L88 has run 11's, how deep into the 11's and with which carb I don't know. Maybe he'll see this and post.

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Yeah, I ripped the AEM wideband out of my Civic just before we headed to St. Louis this year. Was really looking forward to playing with jetting. But, the pushrod kinda ruined that plan lol. I'm no carb expert, so I wont attempt to go into discussing 3 barrel pro's and con's. But for what its worth - we did go 11.90's on one. That was with a 1.9 ish 60 foot and without really playing with the carb on a dyno or even using a wideband at the time...

[PxTx]

Posted for a point of ref.

There are certainly tricks specific to make a 3 barrel run, and bolting on a newer- more tunable carb can be attractive. It's my intention to squease all I can out of the 3 going on Monica's L88.

Motion cars had a garantee of 11,50's right, so I suspect the ol' 3 had to deliver the goods.

[wheelhop]

Is there a Rosetta-Stone CD I can pick up to help me understand this carb lingo ????

[markjohnson]

I'll tell 'ya.......I agree that Vacuum Secondaries Carbs can be made to run hard, especially advantageous on a traction limited car. Up until a just a few years, Holley even had a 950 HP Model that was available with Vacuum Secondaries. We had one on a buddy's 454 Nova that ran 10.50-60's like clockwork on a 28-10.5 Mickey. It was a great carb and sometimes I wish I had socked that one away for a future application. Unfortunately, they were discontinued because everyone wanted the double pumper version.

[StealthBird]

My 3bbl still has the factory monster choke flap in place. the weird one with the two giant holes that, when the flap is closed, keep the boosters exposed. I went one step further and made a fast idle circuit with a solenoid. When you start the car up and pull the choke closed, it sets the fast idle to 1500 rpm. When you open the choke, the solenoid kicks off and the idle is back to normal.

[MultiMopars]

I agree, a vacuum secondary carb CAN run well performance wise and is far more street friendly than a 2x pumper.

[Plowman]

Bkhpah Dyno sheet on a 427 cu.in. the old 3 barrel on the 1968 Dana,peak at HP at 6400rpm was 642.1 at 4800rpm made 589 ft lbs of torque,THE OLD 3 BARREL!