Author Topic: 17058292  (Read 308 times)

Offline mcx

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17058292
« on: March 05, 2021, 11:47:09 AM »
Searching for info/application on this carb. I have searched and found nothing?
Thank you.

Offline Kenth

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Re: 17058292
« Reply #1 on: March 05, 2021, 01:00:48 PM »
GM Holden?

Offline Cliff Ruggles

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Re: 17058292
« Reply #2 on: March 06, 2021, 01:37:52 AM »
Can you put up a pic of it?

Offline mcx

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Re: 17058292
« Reply #3 on: March 09, 2021, 06:48:39 AM »
Hope this helps.

Offline mcx

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Re: 17058292
« Reply #4 on: March 09, 2021, 06:50:11 AM »
Another.

Offline mcx

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Re: 17058292
« Reply #5 on: March 09, 2021, 06:52:51 AM »
Again.

Offline mcx

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Re: 17058292
« Reply #6 on: March 09, 2021, 06:53:39 AM »
Again.

Offline mcx

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Re: 17058292
« Reply #7 on: March 09, 2021, 06:54:13 AM »
Bottom.

Offline mcx

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Re: 17058292
« Reply #8 on: March 09, 2021, 08:05:56 AM »
Number?

Offline Kenth

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Re: 17058292
« Reply #9 on: March 09, 2021, 01:15:18 PM »
Can´t find that number, but the "C" on throttle plate and the .120" upper main air bleeds indicates a 1976-79 passenger style M4MC Chevy unit.
Nice for a performance build.

Offline mcx

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Re: 17058292
« Reply #10 on: March 09, 2021, 04:00:21 PM »
Kent, Thanks for the info. It was someone’s project carb at one time. The air horn APT plug was removed and it was turned fully up. It also has nice CJ secondary rods. The baseplate idle bypass hole was drilled as big as a dime? LOL... On the baseplates top side, it was bushed down to a very small openings. Not sure if it was meant as a correction or they kept drilling larger to try to get it to idle properly?  Chicken or the egg?  I removed the  hidden bushing and installed set screws on the bottom side.

Offline Kenth

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Re: 17058292
« Reply #11 on: March 10, 2021, 12:30:12 AM »
As a precaution from dropping into the intake i prefer the setscrews installed from the top side.
I have found the largest .138" idle bypass air bleeds on 1970-74 factory Chevy bigblock applications.

Offline mcx

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Re: 17058292
« Reply #12 on: March 10, 2021, 05:31:30 AM »
True,  I'll Locktite(medium) or slightly stake the threads. Is this a later small tip J,K,L primary rod version , and not a Large M type core?
Thanks again. Michael

Offline Kenth

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Re: 17058292
« Reply #13 on: March 10, 2021, 12:05:20 PM »
The .120" main airbleeds in airhorn and float bowl indicates .026" primary rod tips.
With the proper sized jets you may use the .036" tipped rods too if you have to.