Edelbrock Victor Jr. Intake...
Alot of good information is getting kicked around so far! But one thing that seems to stick out at me 1st off is that using a 90mm TB will be a waste with my 3" IC piping. So basically running the my stock ported TB will most likely see the same results with a 78mm Elbow as compared to a 90mm Elbow and a Nick Williams...in you guys opinions?
Last edited by HILL_SS; Mar 23, 2008 at 01:53 PM.
To take full advantage of the Vic Jr.. You need an agressive setup with a cam designed for the Vic Jr. Most H/c cars will see a benefit of running the Vic Jr over the ls6. Some people on here even believe that for a pure race setup the Vic Jr is better than the Fast 90, especially after some light porting/ portmatching, which anyone here can do in a matter of a few hours.
So you guys that are running this Vic. Jr. what size cam are you guys currently running with your setup... Also what motor size?
As of now Im only running the 02+ ZO6 cam which is I think 207/217 .551/.551 on a 117.5 LSA...So i figure with what you guys are saying this cam will be way on the low end of aggresiveness...as far as matching it with a single plane like the Vic. Jr....Now this will only be for a fairly short time as I am getting the money/slash parts for my Forged Engine Build coming early this summer hopefully!
And finally I know this qustion will be very open ended and get alot of diff. respondses, but I am going to ask anyway...What size cam would some of you guys recommend with this Vic Jr. intake? And if your answer would vary based on engine size...Show what engine size along with cam size...
I am planning on running a 400+cu engine so what cam would you recommend with that size motor?
Last edited by HILL_SS; Mar 23, 2008 at 02:08 PM.
Only about 100 threads on this already.
99.9% is personal opinion. Anyone who looks at a victor Jr and thinks the runners are equal length shouldnt be telling others what to do on the internet
99.9% is personal opinion. Anyone who looks at a victor Jr and thinks the runners are equal length shouldnt be telling others what to do on the internet
You guys are beating a dead horse I have run both and will finish the swap back to an LS6 here real soon and will know what losses or gains are to be had on the same set up as Arron is doing in Canada also that will be two direct comparisons for you guys to beat on the horse again about the cam wasn't right or the #7 piston issue etc... I will tell you that the Vic Jr isn't really for even fuel distribution it is for high boost applications mainly that is just what a few people were initially thinking about the even fuel distribution, but I do know the center two cylinders on both sides will run leaner with a Vic Jr. Talked to Kurt at W2W about turning the LS6 around on turbo set ups and #7 still goes lean, pretty sure it is a coolant related issue of some sort, but not 100% sure and probably never will be. The Vic definately kills a little of the lowend for sure although that could be a good thing in some cases. The fast 90 isn't been the end all for FI, but shows great gains in N/A applications. I prefer the LS6 and made more power with it on other cars JMO! Good luck you will be fine either way.
One point I haven't heard: the single plane might not be equal length but with some work and testing can be made equal flow. They aren't far off out of the box - from what I've seen the outer 4 cylinders generally flow better, but with some judicious porting the inner 4 can be +-3% which is damn good. And they do flow well. Since I know nothing of the LS6 manifold I can't talk to it.
Jim
Jim
One point I haven't heard: the single plane might not be equal length but with some work and testing can be made equal flow. They aren't far off out of the box - from what I've seen the outer 4 cylinders generally flow better, but with some judicious porting they can be +-3% which is damn good. And they do flow well. Since I know nothing of the LS6 manifold I can't talk to it.
Jim
Jim
LS style intakes are equal runner.
Thats not saying an LS6 intake is BETTER than a victor, wise people will look whats being used on cars that are running what their target is and go from there. But dont think just because a victor jr is working great on a 420 inch 1200hp turbo car it will outperform an LS6 on a 700hp setup if you swap them out.
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Verdad Gallardo Good point.
When you get up into the +1000HP range IMHO you need to be watching individual cylinder temps and AFRs anyway, at least during the tuning process, if you expect things to live a long life.
Jim
When you get up into the +1000HP range IMHO you need to be watching individual cylinder temps and AFRs anyway, at least during the tuning process, if you expect things to live a long life.
Jim
wow guys i should have looked around a bit more before i got the vic jr?? i dont know if its going to help my car or not but it sure does look cool, and my brother and i had a lot of fun learning how to put it on
the one thing i have seen is that now after i got it started it seem to run a lot richer?? but i just forged my motor and swapped my blower oulley also, not sure if that mater's?
also for the posters question about cam size with the vic im running EPP custom grind it a 232/240 .595/.608 on a 115 lsa, i dont know how it going to run because i just got it started to day but ill let you know, and if you want to see why i went with the VIC JR it this right here
now most people would not do this just for looks but im not most people plus on day ill have a F1 setup and might need that big o thing?
the one thing i have seen is that now after i got it started it seem to run a lot richer?? but i just forged my motor and swapped my blower oulley also, not sure if that mater's?
also for the posters question about cam size with the vic im running EPP custom grind it a 232/240 .595/.608 on a 115 lsa, i dont know how it going to run because i just got it started to day but ill let you know, and if you want to see why i went with the VIC JR it this right here
now most people would not do this just for looks but im not most people plus on day ill have a F1 setup and might need that big o thing?
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
the one thing i have seen is that now after i got it started it seem to run a lot richer?? but i just forged my motor and swapped my blower oulley also, not sure if that mater's?
also for the posters question about cam size with the vic im running EPP custom grind it a 232/240 .595/.608 on a 115 lsa, i dont know how it going to run because i just got it started to day but ill let you know, and if you want to see why i went with the VIC JR it this right here
also for the posters question about cam size with the vic im running EPP custom grind it a 232/240 .595/.608 on a 115 lsa, i dont know how it going to run because i just got it started to day but ill let you know, and if you want to see why i went with the VIC JR it this right here
Generally if you make things more efficient, and allow more air in, then it should become weaker.
Although if your MAF is in place, then that can compensate, so its harder to say.
I swapped my LS6 out for the Victor Jr, and I run SD. At the lower rpm's and mid range I had to add a little fuel. At the top end, I had to pull fuel out. That to me speaks volumes.
Generally if you make things more efficient, and allow more air in, then it should become weaker.
Although if your MAF is in place, then that can compensate, so its harder to say.
I swapped my LS6 out for the Victor Jr, and I run SD. At the lower rpm's and mid range I had to add a little fuel. At the top end, I had to pull fuel out. That to me speaks volumes.
Although if your MAF is in place, then that can compensate, so its harder to say.
I swapped my LS6 out for the Victor Jr, and I run SD. At the lower rpm's and mid range I had to add a little fuel. At the top end, I had to pull fuel out. That to me speaks volumes.
Thats was a question I had meant to ask... What will happen to the A/F with a single plane compared to the LS6? Considering no tuning initially just the Vic. out of the box installed replacing an LS6 Intake...
I talked to the buddy of mine that does the tuning on my car...and he said he most likely wouldn't have to do any tuning once installed...I figured with the little different air/fuel efficiency to the cylinders the A/F may be a bit off...
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
Thats was a question I had meant to ask... What will happen to the A/F with a single plane compared to the LS6? Considering no tuning initially just the Vic. out of the box installed replacing an LS6 Intake...
I talked to the buddy of mine that does the tuning on my car...and he said he most likely wouldn't have to do any tuning once installed...I figured with the little different air/fuel efficiency to the cylinders the A/F may be a bit off...
I talked to the buddy of mine that does the tuning on my car...and he said he most likely wouldn't have to do any tuning once installed...I figured with the little different air/fuel efficiency to the cylinders the A/F may be a bit off...
It looks cool
However there are some drawbacks from a LS6. It definately absorbs heat! Also it's heafty. I've seen LSX's have some problems (if it was a owner install issue I'll never know)
I dunno, I like it.
However there are some drawbacks from a LS6. It definately absorbs heat! Also it's heafty. I've seen LSX's have some problems (if it was a owner install issue I'll never know)
I dunno, I like it.
Generally if you make things more efficient, and allow more air in, then it should become weaker.
Although if your MAF is in place, then that can compensate, so its harder to say.
I swapped my LS6 out for the Victor Jr, and I run SD. At the lower rpm's and mid range I had to add a little fuel. At the top end, I had to pull fuel out. That to me speaks volumes.
Although if your MAF is in place, then that can compensate, so its harder to say.
I swapped my LS6 out for the Victor Jr, and I run SD. At the lower rpm's and mid range I had to add a little fuel. At the top end, I had to pull fuel out. That to me speaks volumes.
