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HELP!!!...Holley metering block ID

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HELP!!!...Holley metering block ID

Postby n2oracer » Fri Jan 28, 2011 4:02 pm

A guy brought me a box of Holley carbs that have been disassembled. There are several carbs there : a couple of 750 mech, 600 vac, and a couple of 450 mech. Plus spare parts gathered over the years. I need help matching the metering blocks to the correct carbs. I couldn't find the info on Holley's site. Found part #, but not the stamped ID numbers. Here is what I have.

11166 3
9970 3
6541 4779
11180 3
11038 6
4100
1947 3
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Re: HELP!!!...Holley metering block ID

Postby DrillDawg » Fri Jan 28, 2011 4:40 pm

anything 4779 is 750 DP, check the jets in the diff. blocks and see if you can match the jet size to carb size, that should be in the book.

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Re: HELP!!!...Holley metering block ID

Postby n2oracer » Fri Jan 28, 2011 5:39 pm

No jets or PVs
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Re: HELP!!!...Holley metering block ID

Postby jmarkaudio » Fri Jan 28, 2011 9:24 pm

The 4779 is a 750 DP block, the 11180 3 block is from an early 4781 850 DP, two emulsion bleed metering block. I use those for an inexpensive 3 to 2 circuit Dominator conversion.
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Re: HELP!!!...Holley metering block ID

Postby Ron Miller » Sat Jan 29, 2011 12:57 pm

Call Holley Tech Department. They will help you with all your numbers. They even can tell you the application from the numbers, jet size, etc.
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Re: HELP!!!...Holley metering block ID

Postby JDR Performance » Mon Jan 31, 2011 9:01 am

jmarkaudio wrote:The 4779 is a 750 DP block, the 11180 3 block is from an early 4781 850 DP, two emulsion bleed metering block. I use those for an inexpensive 3 to 2 circuit Dominator conversion.


11180-3 is for a 750. Look at the pvcr size.
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Re: HELP!!!...Holley metering block ID

Postby BLACK BART » Tue Feb 01, 2011 2:58 am

My records show the #11166 block to be a primary block for a 4779DP.

The #6541 and #11180 blocks to be primary blocks for a 4779DP.

The #4100 block is a secondary conversion block to convert a model 4160 to a model 4150.

I don't have anything on the other numbers, but I hope what I listed helps. CJ
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Re: HELP!!!...Holley metering block ID

Postby JDR Performance » Tue Feb 01, 2011 1:03 pm

11166 is a secondary metering block, and will not be drilled and tapped for a power valve.
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Re: HELP!!!...Holley metering block ID

Postby jmarkaudio » Tue Feb 01, 2011 3:07 pm

JDR Performance wrote:
jmarkaudio wrote:The 4779 is a 750 DP block, the 11180 3 block is from an early 4781 850 DP, two emulsion bleed metering block. I use those for an inexpensive 3 to 2 circuit Dominator conversion.


11180-3 is for a 750. Look at the pvcr size.



I'll have to look, but my blocks come bare, without any plugs in the wells, IFR's, and I believe PVCR's. I asked for 850 blocks, may be what they use at BLP and modify as needed. Either way they are an early 2 e-bleed block and should work for any DP with the right IFR's, PVCR's and jets.
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Re: HELP!!!...Holley metering block ID

Postby JDR Performance » Tue Feb 01, 2011 3:35 pm

The pvcr is drilled to size for a 750. If they're complete metering blocks like the ones he's got, the ifr will be for a 750 also, and will be smaller than they would be for an 850. For what you're doing with them they're fine.
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Re: HELP!!!...Holley metering block ID

Postby n2oracer » Tue Feb 01, 2011 4:19 pm

Thanks guys. That info seems to support whats here as I have 4779-6 and 80779. Both 750's.
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