Holley 2300 2 barrel carburetor question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**AngryPirate** · 07-27-2024, 10:27 AM

Quote:

Originally Posted by geezer#99

A reman from Holley is set to bolt on and go.
That blank hole was used on some multi-carb motors. No need to plug it.

Thank you!

**AngryPirate** · 09-07-2024, 03:08 PM

So, I finally got to get back into it.

I got one of those spark plug piston stop bolts to put into the #1 cylinder to find TDC.

I think somethings off.

The yellow lines are the stops and the middle is supposedly TDC.

Also, I noticed that the vacuum coming out of the metering port at idle (it was 1000 rpm which I know is high for these engines) was reading 5 in Hg.

I would’ve expected that to be closer to zero ¯\_(ツ)_/¯

Any thoughts on the TDC being off (at least I think it’s considered off. Ignore the positioning needle, I would’ve expected the pulley “1” marking to match the orange line.

Thanks for any ideas / help.

09-07-2024, 03:08 PM	#2
AngryPirate Senior Member Join Date: Jan 2012 Location: Austin, TX Posts: 561	Re: Holley 2300 2 barrel carburetor question So, I finally got to get back into it. I got one of those spark plug piston stop bolts to put into the #1 cylinder to find TDC. I think somethings off. The yellow lines are the stops and the middle is supposedly TDC. Also, I noticed that the vacuum coming out of the metering port at idle (it was 1000 rpm which I know is high for these engines) was reading 5 in Hg. I would’ve expected that to be closer to zero ¯\_(ツ)_/¯ Any thoughts on the TDC being off (at least I think it’s considered off. Ignore the positioning needle, I would’ve expected the pulley “1” marking to match the orange line. Thanks for any ideas / help. Attached Images



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