Hi Gang,
I need to replace the Holley 1920 carb on my 1966 Dart /6 225. When I look for a replacement from various online parts stores, my options are "L", "U" or "Hook" shaped throttle arms. How can I tell which one I have in my car?

Tom Kimpel

Is this a really dumb question? I looked all over the web for the answer before posting (even found exploded views of Holley 1920s), searched the forum, and looked the 1966 Dart service manual and found nothing. I have no idea what a throttle arm is. Will any Holley 1920 carb, regardless of thorttle arm shape, work?

Tom Kimpel aka Spazus

hmm, I would guess you have the rod-style throttle linkage, so I would think they would call that either "U" or "hook". Might have to talk to a real person and/or look at a diagram in a parts book.

Lou

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Home of Slant6-powered fun machines since 1988

I would suggest going to the Holley website. They can tell you exactly what you have and what you need. I haven't been there for a while, but they used to be very helpful.

Actually, those carbs are not too hard to rebuild yourself. Get a rebuild kit from NAPA and a bucket of carb cleaner, and you could get it rebuilt in an evening. I did this to my '66 Dart with no prior experience with working on carbs, and it came out fine... for a Holley 1920. It did suffer from vapor lock problems but ran well otherwise.

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"Mad Scientist" Matt Cramer
'66 Dart - turbocharged 225
My blog - Mad Scientist Matt's Lair

I'll vote that you probably have the 'U' shaped throttle arm. I've never seen one shaped otherwise. And, as stated above, don't be afraid to rebuild the carb yourself, they are very easy. Just remember, if the car was running ok before you took apart the carb, don't mess with the mixture screw until it is reassembled.

Good Luck!

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Eugene

'66 New Yorker 2dr hdtp
'73 Dart sedan 225

Check out the band! www.double-yellow.com

The correct answer was the "U" shaped throttle arm. Thanks for the input.

Tom

So how much play is allowed where the throttle arm goes into the throttle body? I just looked at my rebuild and there is about 1.5 to 2 millimeters of play.

Tom

I have zero play whatsoever on the 1920 I just rebuilt.

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'74 Duster w/ HEI ignition, beat to snot suspension, A904, 8.25" 3.55 SG rear, still being tuned up and gets 17 MPG

Know how they always build a better idiot? That's me

My 66 270 was rod operated-do not think cable operated systems existed this early at least on the 6, v8 A bodies of his vintage were cable operated to the best of my knowledge-66 was one owner dead stock down to orginal points and rod operated BBS.

Last year at a cruise nite, I had my '66 Dart 170/904 with a rod throttle and another club member had his '66 Signet 225/904 with a cable throttle. After comparing my rod to his cable system, his Signet came with the cable from the factory. The hole for a rod had never been punched on his firewall.

Cecil