Holley 4346 question

[CJP_69]

Can anyone tell me if the 4346 780 should have a check ball in the vacuum secondary housing?

[IZRSSS]

Yes, take a look at "Procedure" #6 in this PDF on how to tune a Holley...its down towards the bottom.

http://www.nastyz28.com/~ericf/tech/htune.pdf

[CJP_69]

Hi Marty,
The Holley rebuilding book that I'm referencing states that most have the check ball but some have a metered restriction orifice. However it doesn't reference which list numbers should have it. Mine didn't have the check ball but before I reassemble it I want to be sure.

[IZRSSS]

Chris - I was hoping the article referenced specific Holly's. Unfortunately it does not. It would be best if you waited for John (JohnZ) to chime in.

Good luck

[JohnZ]

Jerry will have the definitive answer, but I've never seen an OEM vacuum-secondary Holley 4150 or 4160 that didn't have a secondary diaphragm check ball.

[IZRSSS]

Chris - you may want to try calling Jerry or writing him. Contact info is at the bottom of this link...

http://z28camaro.com/

[CJP_69]

Thanks guys. I phoned Holley tech and was told that the 4346 does not have the check ball.

[rodent]

Thanks guys. I phoned Holley tech and was told that the 4346 does not have the check ball.

Exploded view in the Parts manual does not have a ball either,exploded view of other holleys does