Holley St avenger problems
Thread Starter
Tech Contributor
Joined: Aug 1999
Posts: 15,164
Likes: 3,966
From: Connecticut, USA
Holley St avenger problems
I've been looking into a 670 street avenger carb lately and was told by a racing shop,(eBAy), that there is a common off idle problem with them. I wasn't told what it is exactly or how they fix it. Before buying one I was wondering who has them and if you have/had this problem?
Thanks,
Gary
Thanks,
Gary
Drifting
Joined: Jan 2002
Posts: 1,645
Likes: 11
From: Schaumburg IL
Re: Holley St avenger problems (gtr1999)
I bought the 770cfm. It would not idle down to anything sane. Adjusted with no affect. Finally found both the primary and the secondary throttle plates were not closing 100% without bind. Took then all off and used emery cloth to deburr and smooth the edges off and then aligned them perfectly when I put it back together. Worked great, but ran a little rich. Adjusted the float level and now it runs very smooth. I did not have an off idle like you heard, but I have talked to others that have had the same issues that I described.
Is the carb worth it, yes as it runs strong and now.
[Modified by bigvette1, 7:45 AM 11/20/2003]
Is the carb worth it, yes as it runs strong and now.
[Modified by bigvette1, 7:45 AM 11/20/2003]
Race Director
Joined: Apr 2003
Posts: 13,300
Likes: 16
From: TX
St. Jude Donor '12-'13
Re: Holley St avenger problems (gtr1999)
Gary,
I just put a Street Avenger 670 on my 80 w/ a ZZ4. The only issue I had with it is deiseling- continuing to run after I shut it off. I lowed the idle, and it went away. Then one day- reappeared??
Other than that- which I am sure I will figure out, it seems to be a really nice carb.
I just put a Street Avenger 670 on my 80 w/ a ZZ4. The only issue I had with it is deiseling- continuing to run after I shut it off. I lowed the idle, and it went away. Then one day- reappeared??
Other than that- which I am sure I will figure out, it seems to be a really nice carb.
Melting Slicks
Joined: Apr 2001
Posts: 3,399
Likes: 278
From: Olmsted Falls, Ohio
Re: Holley St avenger problems (bhblue80)
I installed a 670 on mine about 8 months ago. Run out-ot-the-box, a couple of minor tweaks with the jets and float bowls and it's been running fine ever since.
It's installed on a Performer intake with a 1/2" fiber spacer between the fcarb and the intake.
[Modified by KenSny, 11:57 AM 11/20/2003]
It's installed on a Performer intake with a 1/2" fiber spacer between the fcarb and the intake.
[Modified by KenSny, 11:57 AM 11/20/2003]
Melting Slicks
Joined: Aug 2003
Posts: 2,135
Likes: 2
From: Dayton Oh
Re: Holley St avenger problems (gtr1999)
I'm running the 670 with an Edelbrock EPS intake on my 355 and have had no problems. It's was installed straight out of the box about 2K miles ago. I'm also running an XE262 cam and the idle is acceptable at 750 RPM. :cheers:
Team Owner
Joined: Feb 2003
Posts: 30,183
Likes: 313
From: Lake Norman NC
Re: Holley St avenger problems (gtr1999)
i got a street avenger 670 on my 74. right out of the box, runs good, but i got a terrible off idle hesitiation. I think i might need to adjust the float bowls alittle, because it seems like not enough gas is getting there. other than that..great running and strong carb. definitely better than that Demon POS i had.
Burning Brakes
Joined: Oct 2002
Posts: 1,228
Likes: 6
From: lancaster ma
Re: Holley St avenger problems (bigvette1)
I will need to check this out. Mine will not idle down either. If I punch the pedal it drops but then goes back one you touch the throttle again.
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Race Director
Joined: Feb 1999
Posts: 19,659
Likes: 34
From: Lenoir City Tennessee
Ci 6, 8 & 10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15
Re: Holley St avenger problems (gtr1999)
I have a 670 on mine also. It ran fine right out of the box. My father in law helped me tweek it a little. I do have an off idle stumble that is really noticeable with the Keisler 5 speed. I have changed the primary jets just up 2 and lowered the idle speed. I am happy with it.
