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Holley Carb Question #80264
06/26/08 09:00 PM
06/26/08 09:00 PM
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Kudakidd Offline OP
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Are power valves used on the secondary side of Holleys? A friend has a 750 vacuum secondary with a metering block. Although there was one in it, I can't find any tech info which lists PV's in the secondary side. What's the story?

Re: Holley Carb Question [Re: Kudakidd] #80265
06/26/08 09:05 PM
06/26/08 09:05 PM
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Pacnorthcuda Offline
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sounds like someone replaced the metering PLATE with the block (its often done)and installed the PV.

Re: Holley Carb Question [Re: Kudakidd] #80266
06/26/08 09:45 PM
06/26/08 09:45 PM
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Leigh Offline
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The original 3310 ( -1 suffix, I think, 780 cfm) came with primary and secondary metering blocks, with 8.5 and 10.5 valves respectively. This was also the BB Chevy configuration.

Re: Holley Carb Question [Re: Kudakidd] #80267
06/26/08 09:54 PM
06/26/08 09:54 PM
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Andrewh Offline
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the vacuum secondary ones, old style anyway did not have pv in the secondary side.
you usually find a plate there with a recess that isn't cut all the way through that looks like a pv could go there, but there was not.

Re: Holley Carb Question [Re: Leigh] #80268
06/26/08 10:07 PM
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Kudakidd Offline OP
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Quote:

The original 3310 ( -1 suffix, I think, 780 cfm) came with primary and secondary metering blocks, with 8.5 and 10.5 valves respectively. This was also the BB Chevy configuration.




Thanks Leigh, this is exactly what I was hoping to find out. The carb is a 780cfm on a friends '71 Z-28 ( 350ci). Whether or not the carb came thru with a metering block or plate, didn't matter. I just needed to know IF and what SIZE secondary PV should be used.

Re: Holley Carb Question [Re: Pacnorthcuda] #80269
06/26/08 10:09 PM
06/26/08 10:09 PM

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Quote:

sounds like someone replaced the metering PLATE with the block (its often done)and installed the PV.




i gotta mark this day down in the calender, becouse

Re: Holley Carb Question [Re: Leigh] #80270
06/27/08 06:32 AM
06/27/08 06:32 AM
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YO7_A66 Offline
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Leigh is correct. I just checked the list and it did note that the 3310-1 is a 780cfm unit with 72/76 jets and a 025 nozzle. It showed under "PV" to see notes #12 & 13. #12 shows a 8.5 secondary pv and #13 note shows a 10.5 primary pv. I found this info on page #1 of the Holley part number listings (which I can't get attached to this response).

Edit:
I made a two page PDF that shows the info including notes #12 & #13.

4514858-Holley3310.pdf (267 downloads)
Last edited by YO7_A66; 06/27/08 06:54 AM.
Re: Holley Carb Question [Re: YO7_A66] #80271
06/27/08 09:27 AM
06/27/08 09:27 AM
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Kudakidd Offline OP
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Quote:

Leigh is correct. I just checked the list and it did note that the 3310-1 is a 780cfm unit with 72/76 jets and a 025 nozzle. It showed under "PV" to see notes #12 & 13. #12 shows a 8.5 secondary pv and #13 note shows a 10.5 primary pv. I found this info on page #1 of the Holley part number listings (which I can't get attached to this response).

Edit:
I made a two page PDF that shows the info including notes #12 & #13.




Dave , Thanks for the PDF. Now my friend can file it for future reference.

Re: Holley Carb Question #80272
06/27/08 04:26 PM
06/27/08 04:26 PM
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Pacnorthcuda Offline
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Quote:

Quote:

sounds like someone replaced the metering PLATE with the block (its often done)and installed the PV.




i gotta mark this day down in the calender, becouse




Then my statement must clearly be incorrect.







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