I hear it increases air flow into the carb. any one done this and have et or dyno results to back it up? it's a holley carb.

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ICON Motorsports
1st & 3rd

I have seen such data, and it definatly helped. I'll be damned if I can remember any numbers tho.

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"American made baby. 100% American iron. The muscle among the masses. My hero. Yep, you can take your ergonomically designed, space age, computer controlled, 4 door, cup holding map lighted split double wishbone split fold down retractable cargo covered moon roof piece of transportation and keep it. For I have felt the thunder. And I know the difference!"
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Florida Thirdgenners Message Board
ICON Motorsports

Removing the choke horn definately helps especially if you have a drop base aircleaner.

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1984 WS6 Trans Am Hartop
Former L69 Car under restoration
1984 WS6 Trans Am T-top car
4-bolt main 350, headers, Holley 650, T-5 and 3.23's.
Daily driver and restoration

Stupid question...
What's a choke horn? The sort of vertical extension that the choke plate closes against? If that is what one is, how does removing it affect cold startups?
Thanks

If you have no choke cold start-ups suck and really cold start-ups really suck. The choke horn on a holley is the part that sticks up on the primaries, one without the choke horn has both the primaries and secondaries looking the same.

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1984 WS6 Trans Am Hartop
Former L69 Car under restoration
1984 WS6 Trans Am T-top car
4-bolt main 350, headers, Holley 650, T-5 and 3.23's.
Daily driver and restoration

84FTA is totally right, I am in the process of selling my holley because of this. It is one Bad ***** once it gets warmed up, but before then, it sucks. If it gets cold where you are at all, you will need a choke.

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Black 89 IROC...Mods: 355, 10.5:1 comp, Big Solid Crower Cam, TFS heads, Victor Jr, Holley, and a 5 spd...

Ede< i removed Mine On the Qjet i was using before, and I noticed a definte seat of the pants improvement.

AS for Cold starts, It just takes a little effort, Ive never had it Be a REal Ordeal.

it only gets like 40* here tho



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60 Ranchero - Project ( Money Hole )
85 Z28 LG4 - Daily Driver
**Mods**
MSD Superconductors
14" Open Element
KYB all around

Well... I can't give you dyno results, but I can give you G-tech results. When I first installed, and tuned the carb, my best g-tech time was a 13.15. I pulled the carb, took a cutter to the choke horn, smoothed the rough edges off, and broke out of the 13s.

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91 Firebird Formula. Converted to carb. Holley 750. Forged Flat top pistons. 10.5 to 1 compression. ZZ-9 Cam. Ported L98 Heads.
175 shot NOS, 700r4 w/ 3000 rpm converter and 3.73s in the back. Headers w/ full dual exhaust. 27.5 inch McCrearys. (free slicks)
12.98 @ 106 Natural,
11.83 @ 113 NOS.

thanks, i'm going to mill it off. cold starts isn't a problem, it'll never be drove in the cold.

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ICON Motorsports
1st & 3rd