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CC Advertisers
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11-14-2007, 06:00 PM
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CC Member
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Join Date: Mar 2007
Cobra Make, Engine: Lonestar 427 Comp. 351W
Posts: 92
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Not Ranked
Intake Manifold Recommendations
I am currently running a Ford Motorsports dual plane intake on my 351W. I have a 230 deg. retro roller hydrualic cam. My dyno results show the torque is falling off sharply at 5000 with peak power at 5300-5500.
I was thinking about trying out an Edelbrock performer RPM to possibly open up the top end to 5800-6000 rpm.
Do any of you small block folks have any experience with either of these manifolds or other similar manifolds for the windsor?
__________________
Way to go Roscoe
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11-14-2007, 07:26 PM
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CC Member
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Join Date: Apr 2005
Location: Tucson,
AZ
Cobra Make, Engine:
Posts: 5,391
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Not Ranked
Victor Jr is my advice.
Larry
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11-14-2007, 07:52 PM
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CC Member
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Join Date: Aug 1999
Cobra Make, Engine:
Posts: 2,888
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Not Ranked
I would think the Performer RPM would be a good choice. I have a JR on my track engine and it really works best after 3,000 rpms. If I converted my engine to mostly street driving I would switch to a dual plane.
RD
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SAAC member and supporter
Club Cranky charter member
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11-14-2007, 09:00 PM
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CC Member
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Join Date: Mar 2007
Cobra Make, Engine: Lonestar 427 Comp. 351W
Posts: 92
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Not Ranked
Most of my seat time is on the road course. With my street tires the minimum engine speed is 2200 rpm but mostly 2700 to 5300 rpm. Slicks should raise this range.
I am not sure I have hood clearance for the victor Jr. If I were to use a single plane that would be the first one to try for sure.
__________________
Way to go Roscoe
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11-14-2007, 09:03 PM
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CC Member
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Join Date: Nov 1999
Location: Las Vegas,
NV
Cobra Make, Engine: Classic Roadster; 351W
Posts: 743
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Not Ranked
The Victo Jr. and the RPM Air Gap have the same height - I think. All the measurements can be found on Edelbrock's website. Go with the Air Gap if you can fit it. Makes good low end / medium torque and can hang with a Victor Jr. up to 6500 rpm on most 400 -450 HP 351W's
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11-15-2007, 08:07 AM
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Renegade Nuns on Wheels
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Join Date: Aug 2001
Location: columbus,
Oh
Cobra Make, Engine: Unique 427 roadster with 351C-4B
Posts: 5,129
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Not Ranked
For a 230 roller, that is early. Are you running stock heads? If so, that would explain a lot. As for your question, performer RPM. But with stock heads... doubt it would help much over what you have.
Edit... I meant RPM air gap!
Last edited by rdorman; 11-15-2007 at 08:49 AM..
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11-15-2007, 08:45 AM
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CC Member
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Join Date: Dec 2002
Location: Chicago 'Burb,
Il
Cobra Make, Engine: SPF#1245 w/ 1966 427 SO
Posts: 1,167
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Not Ranked
Is it a stock bore / stroke 351w? What heads do you have? What are your HP & TQ figures?
The Vic jr. is designed to make power from 3500-7500, and the RPM and RPM Air Gap are in the 1500-6500 range.
If you have a stock 351w with stock heads, then I would say RPM or RPM air gap. Unless you have a pretty strong 351w or a stroker (392, 408, 418, etc) with good flowing heads, then you probably aren't making enough power in the higher rpm range to make good use of a Vic jr intake.
Just my humble opinion.....
Last edited by TerrysSPF; 11-15-2007 at 08:51 AM..
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11-15-2007, 10:47 AM
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CC Member
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Join Date: Sep 2002
Location: Hickory,
NC
Cobra Make, Engine: ERA 427SC w/427so, ERA GT #2002
Posts: 1,106
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Not Ranked
I'm running the Victor Jr. on the 331 in my GT40. Works well on the street and great on the track. 
__________________
Tom
"If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough HORSEPOWER." Mark Donohue
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11-15-2007, 05:50 PM
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Senior Club Cobra Member
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Join Date: Feb 2006
Location: Syracuse,
NY
Cobra Make, Engine: BDR 228, Roush 342R, 457HP/428TQ, modified AOD
Posts: 1,378
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Not Ranked
Victor, Jr. works well on my 342, but it definitely likes things best above 3000 rpm.
__________________
Dave
Nolite id cogere, cape malleum majorem - Don't force it, get a bigger hammer.
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