5 replies to this topic

[Muzza]

Hi All

I have brought a 390 Holley

on stripping down I have found this

Main 60. Should be 51

Power valve blanked off should be 65

Secondary plain, however has been cut and fitted sideways, also has quick change cover

Pri Metering block 7204-7 should be 34R8909AS

the metering valve has me stumped as I can’t find specs, except it is a correct number 

NO choke, it appears to have never had one based on special Holley blanking screws

 

thanks for advise 

[rodomo]

Sounds like a race application.

[yel327]

Hi All

I have brought a 390 Holley

on stripping down I have found this

Main 60. Should be 51

Power valve blanked off should be 65

Secondary plain, however has been cut and fitted sideways, also has quick change cover

Pri Metering block 7204-7 should be 34R8909AS

the metering valve has me stumped as I can’t find specs, except it is a correct number 

NO choke, it appears to have never had one based on special Holley blanking screws

 

thanks for advise 

 

I had one like that once, it came with a pair off a tunnel ram. If you get me the list number I have a big book on Holley list numbers

[Muzza]

The list number is 8007, i have the Holley book, what I can’t find anywhere is metering block differences between

the 7204 and the factory one 34R8909AS, all other bits are easily converted back to factory

[claysummers]

Vacuum secondary 390CFM. I have an as new one coming in the post. Also got a refurbished one on the bench. Don’t know much about them.

You’ve looked at this?
https://documents.ho...cal_listing.pdf


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[yel327]

I think all I have listings for are:

 

R80507

R80507-1

R80507-2

R80507-3

R6299-1

R6895

R8007

R80341

 

I'll have a better look in the old 1990's book I have to see if there is more info but the condensed one doesn't list the metering blocks. I did find this though, last post in the thread:

 

https://www.forabodi...estions.193633/

Edited by yel327, 15 July 2025 - 11:02 AM.