CRG Discussion Forum

Camaro Research Group Discussion => General Discussion => Topic started by: CJP_69 on October 10, 2011, 09:00:18 PM

Title: Holley 4346 question
Post by: CJP_69 on October 10, 2011, 09:00:18 PM

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

Title: Re: Holley 4346 question
Post by: IZRSSS on October 10, 2011, 10:45:59 PM

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

Title: Re: Holley 4346 question
Post by: CJP_69 on October 11, 2011, 12:13:37 AM

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.

Title: Re: Holley 4346 question
Post by: IZRSSS on October 11, 2011, 12:25:05 AM

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

Title: Re: Holley 4346 question
Post by: JohnZ on October 11, 2011, 04:19:10 PM

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.

Title: Re: Holley 4346 question
Post by: IZRSSS on October 11, 2011, 05:07:12 PM

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

http://z28camaro.com/

Title: Re: Holley 4346 question
Post by: CJP_69 on October 12, 2011, 06:03:44 PM

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

Title: Re: Holley 4346 question
Post by: rodent on October 12, 2011, 06:41:05 PM

Quote from: CJP_69 on October 12, 2011, 06:03:44 PM

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 :)