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Author
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Topic: Question about RPM vs Victor JR
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Jerry Piner
Gearhead Posts: 223
From: staunton, va
Registered: Dec 2001
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posted 09-20-2004 09:04 AM
  
I was talking to some guys at the track yesterday and they were saying that if I took my RPM off and put a Victor Jr on it would pick my car up at least a tenth. I told them i didn't think it would help since I was only shifting at 6000. Well the one guy runs a Torino that has a 460 that he shifts at 6000 he said he went from a RPM to a Victor Jr and it picked him up 2 tenths. So what does everyone think would the swap help my car.
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capri man
Gearhead Posts: 7221
From: doerun, ga.
Registered: Nov 2000
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posted 09-20-2004 10:54 AM
jerry, unless you can leave at 3500 or better, you might be hurting yourself.------------------
mike r
racing is real
everything else is just a game.
81 capri-302-7.33 @92mph 1/8
1.54 60 ft. http://community.prestage.com/Member+Pages/789.aspx
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Jerry Piner
Gearhead Posts: 223
From: staunton, va
Registered: Dec 2001
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posted 09-20-2004 11:19 AM
my converter flashes to 4500 but i footbrake to 2500.
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kid vishus
Gearhead Posts: 6395
From: middle of NC
Registered: Oct 2000
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posted 09-20-2004 06:51 PM
I think it would be quicker with the Vic Jr intake. How much quicker, I don't know. KK's motor has a Vic Jr on it, and it only gets shifted at 6000 rpm and it works real well (I did put a 1/2" 4 hoel spacer under the carb.) Her dad runs a pump gas 393W with a Vic Jr intake that gets shifted at 6k also, but he uses a powerglide trans instead of a Ford 3 speed. He decided earlier this year that he wanted more low end power thinking it would pick up ET, so he swapped the Jr intake for an RPM. The car did 60' a little quicker, but lost almost 2 tenths in the 1/8, and close to 3 mph. KK's car 60's a little slower than yours does now, but it runs a full 2+ tenths faster ET with less gear. But remember, I've been wrong before. 
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bluestreek
Gearhead Posts: 1724
From: Athens,GA
Registered: Jul 2001
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posted 09-21-2004 01:17 AM
I say it's worth about 2-4 mph. I'm not sure if you'll see it in your e.t. though. Be sure to let us know.  ------------------
1966 Mustang Coupe: Custom glass hood and BIG scoop sits atop a 289 stroked to 331 c.i., Steel crank, rods and girdle, TFS alum. heads, Stealth 8020 intake, Xtreme 268 Solid Roller, Holley 750 HP, long tubes, 4speed, 9" 3.50 posi.
11.86 @ 116 mph (7.62 @ 93 mph)daily driver!
DanH
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Rory McNeil
Gearhead Posts: 1611
From: Surrey, B.C. Canada
Registered: Nov 2000
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posted 09-21-2004 03:30 AM
I know it`s a different engine (I run a 428CJ FE in my Fairmont), but I put a new Victor intake on my 428 last year, replacing a mildly reworked 35+ year old Ford "Sidewinder" factory 427 dual plane. So far, the antique Ford piece is still quicker by 1/2 tenth & a full MPH. And this is on a low 10 second 4 speed car thats gets launched no lower than 6000 rpm!------------------
78 Fairmont 428 4 speed 10.20@130mph
80 Fairmont 302 5 speed 12.8@105mph
85 Mustang NHRA M/Stock 302 5speed. [email protected]
59 Meteor (Canadian Ford) 2 dr sedan 332, auto
74 F350 ramp truck 390 4spd
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mustangboy
Gearhead Posts: 1091
From: Ont, Canada
Registered: Mar 2002
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posted 09-21-2004 09:25 AM
quote:
Originally posted by Rory McNeil:
I know it`s a different engine (I run a 428CJ FE in my Fairmont), but I put a new Victor intake on my 428 last year, replacing a mildly reworked 35+ year old Ford "Sidewinder" factory 427 dual plane. So far, the antique Ford piece is still quicker by 1/2 tenth & a full MPH. And this is on a low 10 second 4 speed car thats gets launched no lower than 6000 rpm!
You'd almost think the Ford engineers knew what they were doing back in the 60s ------------------
1968 mustang j-code sprint.13.69@101 306cu.in, stock ported heads,weiand exellerator,650 holley DP,hedman hedders,comp 292 Magnum cam,4-speed,8 inch 4.11 detroit locker http://mustangsandmore.50megs.com/MembersPics/mustangboy.html [This message has been edited by mustangboy (edited 09-21-2004).]
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kcode
Gearhead Posts: 3226
From: alvaton,ky,usa Suburb of Bowling Green, M&M #79, MCA #29208
Registered: Jun 99
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posted 09-23-2004 10:13 PM
I replaced the RPM with a Victor Jr on the 347. For the first few passes there was no difference in the trap MPH. But the 750DP was mounted on the intake with only a gasket due to hood clearance. I went with a cowl hood and a 1" HVH Aluminum 4 hole spacer with the backside milled to match the intake opening and picked up 2.5 mph also went up 4 jet sizes. I did pick up .2 on the ET, but my sixty foots still suck with either intake. ------------------
Mike Golliver
MCA Gold Card Judge-Modifieds
65 Kcode coupe 347 stroker modified 5-speed MCA Retired
66 convertible-3 dueces and a 5-speed with a 289
89 T-Bird Super coupe
01 Mustang GT Convt
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