|07-28-2013 10:55 PM|
|68NovaSS||Just take the information in this thread and run with it...|
|07-28-2013 07:38 PM|
|04-03-2007 03:26 PM|
Yeah I'll do my best may take a day or two but I will try to take lots of pictures all the way around so everyone can see what I'm talking about.
It feels smooth the whole time I can just hear and feel the extra "boost" when the secondaries open up.
Thanks Guys talk to ya tomorrow Brian
|04-03-2007 01:58 PM|
jet extensions with high gears and PG...on a carb that will barely open the secondaries, LOL! don't make him spend any more than he has to, k??
2-late, can you get me a good pic of the primary/secondary linkage off the driver side of the carb?
|04-03-2007 01:50 PM|
|MIKE FROM SM||With high gears and pg the secondaries should open very late. The engine should rev up smoothly. If it doesn't, the secondaries are opening too soon. Keep putting in a stiffer spring until it does rev up smooth. Or put some low gears in that thing.|
|04-03-2007 12:29 PM|
I checked cork gasket it's there and intact but I'm not saying it isn't leaking from there. I'll probably will replace it just because if it's not a problem now it soon will be. Thanks
|04-03-2007 12:18 PM|
Well it's a 2 speed powerglide and I'm already in the upper rpm's when it starts to open. I would say around 4,000-5,000 rpm. Around 4-5K rpm I'm already doing close to 50 in first gear. ( I know I have really tall gears) But I was hoping with the other two barrels opening earlier. That that would help me off the line more. With a white spring ( the lightest) I would expect them to start to come on around say 2,500 rpm or so. I don't know maybe this is right where they are supposed to come on at.
|04-03-2007 09:37 AM|
|MIKE FROM SM||What makes you think the secondaries are opening late?|
|04-03-2007 07:54 AM|
you can pull the spring out and either push it inside out to soften it so the secondaries are open sooner and stay open
cut the bottom off, this will give an initial hit at lower rpms then slowly open in the upper rpms
|04-03-2007 07:16 AM|
Well I went home last night and bought a vacuum secondary spring kit. I put the white one in ( the lightest/less tension )and my secondaries open up yeah the only problem is it opens up in to high rpm. Right about the time I want to let off the secondaries open up so I don't get to enjoy the extra power. Is there a way to increase vacuum so it will open up sooner or a way to adjust when it opens up? I know usually you would adjust when the secondaries open by getting a little bit stiffer spring but since I have the weakest on in there now I don't know what to do. Do you think I can run it with out a spring at all or do I have to have one to push the diaphragm back down?
Thanks again for all the help now I just need to fine tune this thing
|04-02-2007 10:42 AM|
|2_Late_I_Won||AHWWW HAAAA I think I found my culprit Sweet thanks I'll have to get another spring and see if that helps.|
|04-02-2007 10:37 AM|
|NXS||White, yellow...to black....black being the stiffest and latest opening|
|04-02-2007 09:27 AM|
It said R75 but that doesn't sound like model number to me. Oh well!!! Anyway I took apart the secondary and noticed there was a Black spring in there it seemed kind of stiff. What color should it be and is the black one stock or do you think it's been changed out before?
Thanks again Brian
|03-29-2007 09:36 AM|
|2_Late_I_Won||Thanks 66BOWTIE when I get home I'll have to ck it out.|
|03-29-2007 09:08 AM|
This is where to find the list #. From the Holly site.
QUESTION How do I find the "list" number on my carburetor?
ANSWER The list number for most performance and factory 2 and 4 barrel carburetors will be found stamped into the upper right hand corner of the airhorn or sometimes called the choke tower. On the 4150 HP models that do not have a choke tower the list number will be stamped into the mainbody behind the throttle linkage. This number is used to identify the carburetor and also used when needing service parts or renew kits.
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