victor jr on 421 sbc

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rudymxr
Posts: 5
Joined: Sat Dec 24, 2011 4:35 pm

victor jr on 421 sbc

#1 Post by rudymxr » Tue Mar 20, 2012 4:34 pm

does anybody think a victor jr is ok for a 421 sbc-with an 850 holley

12:1 comp-
650lift cam
274 duration

thanks

waterdog
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Joined: Sun Nov 04, 2007 7:01 am
Location: Tampa Bay, FL

Re: victor jr on 421 sbc

#2 Post by waterdog » Tue Mar 20, 2012 7:40 pm

I've swapped from a victor jr to a super victor 4 times and seen a 10th improvement in the 1/8 mile each time, even more with some intake port work done. Walt
1970 Nova SS 3580lb, Shafiroff 434 na, 9.94@135.8

JES
Posts: 84
Joined: Tue Feb 17, 2009 10:29 pm

Re: victor jr on 421 sbc

#3 Post by JES » Tue Mar 20, 2012 10:49 pm

It MIGHT be ok, but seems wrong for the application.

Is hood clearence the problem?

What kind of car?

rudymxr
Posts: 5
Joined: Sat Dec 24, 2011 4:35 pm

Re: victor jr on 421 sbc

#4 Post by rudymxr » Wed Mar 21, 2012 5:03 pm

hood clearance isnt an issue.

its a 63 chevy II
i already have the intake and its ported to match the heads and a 1206 felpro
its on my engine now(355) and was just curious if it will work on a bigger ci motor

thanks

JES
Posts: 84
Joined: Tue Feb 17, 2009 10:29 pm

Re: victor jr on 421 sbc

#5 Post by JES » Fri Mar 23, 2012 10:19 pm

If hood clearance is not a problem, I would get a intake that will fit the application. Maybe a Holley 300-25 or Edebrock super victor. I think your app will like a manifold upgrade.
John

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ytnova
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Re: victor jr on 421 sbc

#6 Post by ytnova » Sat Mar 24, 2012 8:12 am

You didn't say what type of rpm you are wanting to run, or even how much it weighs, intake port volume, etc. but I would have to agree, the jr is probably a little small for that application, you might be able to crutch it a little with a 1" or 2" open spacer to help with plenum volume, but ultimately, the runners are too small. You are leaving some mid and upper rpm power on the table by not going to a bigger intake.
I am not really sure what the question is, but I am pretty sure the answer is Big Block.

rudymxr
Posts: 5
Joined: Sat Dec 24, 2011 4:35 pm

Re: victor jr on 421 sbc

#7 Post by rudymxr » Sat Mar 24, 2012 9:48 am

hey guys, thanks alot! thats what i was needing to know.

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