Vic Jr. under 77 hood
Thread Starter
Racer
Joined: Oct 2006
Posts: 269
Likes: 7
Vic Jr. under 77 hood
Will a Vic Jr fit under a 1977 hood? My current Performer AirGap will fit with a drop base.
If I use the Vic Jr I will then have to forget about using the Qjet that Lars rebuilt for me?
What carb would you recommend for a 406 with afr195's and an aggressive hydraulic roller cam?
What linkage and fuel line changes will be required? I was trying to avoid these issues by using the Qjet.
If I use the Vic Jr I will then have to forget about using the Qjet that Lars rebuilt for me?
What carb would you recommend for a 406 with afr195's and an aggressive hydraulic roller cam?
What linkage and fuel line changes will be required? I was trying to avoid these issues by using the Qjet.
Melting Slicks
Joined: Jun 2002
Posts: 2,844
Likes: 99
From: Orrtanna Pa.
Mine's an 80, and I've run the Performer, the RPM, and Vic Jr under the stock hood with a drop base air cleaner. You will need lots of mods to linkages, fuel lines,etc. Then when you're done. drive it for a while, then scratch your head and ask yourself "What was I thinking?", you'll end up putting the RPM back on.
The Q-Jet is a great carb, but would not keep up with my 406, so I went Holley 3310, and have quite a bit of tuning (jet changes, IFR's, IAB's, main body, billet metering blocks, powervalve) My cam is a solid Isky that will tip 7000 plus rpms, so I needed tons of fuel.
Check out my website, lots of stuff related to your question.
The Q-Jet is a great carb, but would not keep up with my 406, so I went Holley 3310, and have quite a bit of tuning (jet changes, IFR's, IAB's, main body, billet metering blocks, powervalve) My cam is a solid Isky that will tip 7000 plus rpms, so I needed tons of fuel.
Check out my website, lots of stuff related to your question.
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
I have done actual back to back dyno tests with a RPM Air Gap and Vic Jr on my old warmed over 355ci. Contrary to popular belief the Vic Jr made more peak torque and horespower and obviously the most power gained was in the the upper RPM's.
Now we are not talking enormous amounts of power here only a few HP and Ft/lbs, the RPM Air Gap is a very good intake. I would assume the Vic Jr would pick up much more over the Performer Air Gap
One cam I have always liked if I were to go to a hydraulic roller is the CC 286HR Magnum, it has only 230 deg duration but big lift. A forum member has it in his big inch small block and he says he loves it
Now we are not talking enormous amounts of power here only a few HP and Ft/lbs, the RPM Air Gap is a very good intake. I would assume the Vic Jr would pick up much more over the Performer Air Gap
One cam I have always liked if I were to go to a hydraulic roller is the CC 286HR Magnum, it has only 230 deg duration but big lift. A forum member has it in his big inch small block and he says he loves it
Last edited by MotorHead; Nov 11, 2008 at 08:55 AM.
Drifting
Joined: Jul 2002
Posts: 1,944
Likes: 20
From: The only Corvettes in Highett Victoria
myc#,
If you're interested in selling the Air Gap, I'd like to hear from you. I am planning on fitting one to my '74, but they're a bit rare down here, and the vendors charge accordingly. Please let me know.
Regards from Down Under
aussiejohn
9 months to go
If you're interested in selling the Air Gap, I'd like to hear from you. I am planning on fitting one to my '74, but they're a bit rare down here, and the vendors charge accordingly. Please let me know.
Regards from Down Under
aussiejohn
9 months to go
Thread Starter
Racer
Joined: Oct 2006
Posts: 269
Likes: 7
You will need lots of mods to linkages, fuel lines,etc. Then when you're done. drive it for a while, then scratch your head and ask yourself "What was I thinking?", you'll end up putting the RPM back on.
The Q-Jet is a great carb, but would not keep up with my 406, so I went Holley 3310, and have quite a bit of tuning (jet changes, IFR's, IAB's, main body, billet metering blocks, power valve) My cam is a solid Isky that will tip 7000 plus rpms, so I needed tons of fuel.
The Q-Jet is a great carb, but would not keep up with my 406, so I went Holley 3310, and have quite a bit of tuning (jet changes, IFR's, IAB's, main body, billet metering blocks, power valve) My cam is a solid Isky that will tip 7000 plus rpms, so I needed tons of fuel.
It sounds like several members are saying that the Lars built Qjet will not keep up with a 550 -600 hp 406. Is this because of the single inlet on the Qjet or the new stock fuel pump or both? The stock fuel pumps were sufficient for big block corvettes why not a 406?
What if I remove the filter at the carb and insert a large inline filter would that help?
Will the low profile Vic jr. fit under the hood of a 77 with an adapter for a Qjet and a drop base filter?
Should I just bite the bullet and go Vic Jr with Holley or Mighty Demon or will a 550 - 600 hp 406 be ok with a RPM Air Gap and a Lars built Qjet?
Melting Slicks
Joined: Jun 2002
Posts: 2,844
Likes: 99
From: Orrtanna Pa.
If I go with the Vic jr. and either the Holley 3310 or the Mighty Demon carb what linkage, fuel line and fuel pump mods will I need?
It sounds like several members are saying that the Lars built Qjet will not keep up with a 550 -600 hp 406. Is this because of the single inlet on the Qjet or the new stock fuel pump or both? The stock fuel pumps were sufficient for big block corvettes why not a 406?
What if I remove the filter at the carb and insert a large inline filter would that help?
Will the low profile Vic jr. fit under the hood of a 77 with an adapter for a Qjet and a drop base filter?
Should I just bite the bullet and go Vic Jr with Holley or Mighty Demon or will a 550 - 600 hp 406 be ok with a RPM Air Gap and a Lars built Qjet?
It sounds like several members are saying that the Lars built Qjet will not keep up with a 550 -600 hp 406. Is this because of the single inlet on the Qjet or the new stock fuel pump or both? The stock fuel pumps were sufficient for big block corvettes why not a 406?
What if I remove the filter at the carb and insert a large inline filter would that help?
Will the low profile Vic jr. fit under the hood of a 77 with an adapter for a Qjet and a drop base filter?
Should I just bite the bullet and go Vic Jr with Holley or Mighty Demon or will a 550 - 600 hp 406 be ok with a RPM Air Gap and a Lars built Qjet?
You can try the stock pump if you want, but I replaced mine with the Holley 130 gph mechanical pump while I was at it. Not that much money, and is rated twice what the stock pump delivers.
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Drifting
Joined: Apr 2007
Posts: 1,892
Likes: 3
From: Springfield Illinois
[QUOTE=myc3;1567861878]
It sounds like several members are saying that the Lars built Qjet will not keep up with a 550 -600 hp 406. Is this because of the single inlet on the Qjet or the new stock fuel pump or both? The stock fuel pumps were sufficient for big block corvettes why not a 406?
QUOTE]
I'm gonna say the extra accelerator pump for the secondaries in the holley is your answer.
It sounds like several members are saying that the Lars built Qjet will not keep up with a 550 -600 hp 406. Is this because of the single inlet on the Qjet or the new stock fuel pump or both? The stock fuel pumps were sufficient for big block corvettes why not a 406?
QUOTE]
I'm gonna say the extra accelerator pump for the secondaries in the holley is your answer.