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Figuring it's a nascar special made, maybe 830cfm

Yes on the same size

Yes

I looked it up, and there was no reference to firearms, but, it could have been a separate division of firearms.

Another pic

1.470. Measuring down 1 of the throats

Correct but there was a colt industries that wasn't affiliated with the fire arms company from what I read

.420 , maybe a shade larger

Throttle bores measure 1.67"

Ok, thanks everyone, Colt industries did take over Holley in 68 apparently

It's at my shop, can't measure till monday

More pics, it appears the butterflies and shafts are one piece

I will later, I've seen a lot of Holley carbs, never one like this. The blade assembly is billet aluminum, custom made The number shows it to be a 830 cfm NASCAR carb

OK, I know it's a Holley 4150 series. Wondering if anyone knows what the pony head insignia means. It's some sort of special carb built for a specific brand of car.

Quick way with a remote starter button- start on one side. When intake valve just closes, adjust exhaust valve. When the exhaust valve starts to open, adjust intake valve. Should be able to adjust them in 15 minutes or less!

i think i would've replaced the factory metal lines also. nice car!

It's crazy power if you can get the power to the track. Haven't been over 20 psi yet, it's capable of 60+

Nothing like it !

Starting line

Sorry for long delay. Only 1/4 mile hit: drove through convertor at 200' and basically was cruising the rest of way on rev limiter. Spark plug hole repair blew, so we lost a plug at 1000'. Now getting ready for Indy points meet.

Slightly quicker than 9's

Be careful welding on the brackets. It's very easy to bow the axle tubes. I use a bar/cone set-up that goes through the tubes to keep them straight, especially when welding the ends on.

already did, thanks

Looking for a set with no spark plug hole repairs. PM me if you have any, Thanks

I can't remember if my car had a return spring. I never liked the diagram style.,you can add a heavy duty spring on the clutch fork to pull the pedal back up.

I always ran a Borg & Beck style Ram clutch with a 3 paddle metallic disc.

Finally got to the track. Can't get video to load

Bam!

Did transbrake testing, but Can't get the video to load