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Old 06-08-2005, 07:23 PM   #1
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Victor 5.0 efi vs Spyder efi on 306 (Mass-floefi.com)

Which intake system would be best on a 306 NA only, 10.5 to 1 CR, with 195 Canfield heads( 58cc), 1087 Wolverine cam, 1 3/4LT, 3" X-pipe to 2 1/2" tailpipes, 5sp, 3.73, 3000lb coupe for 90% street and 10% track?

1. Victor 5.0 EFI with 75mm TB, 80mm Pro-M, 4" or 3.5" AFM power pipe and 8 36lb injectors.
or
2. Victor Jr EFI with 4bbl style TB(1000cfm), 85mm GM LS1 style Mass meter converted for Ford EECIV, with raim air style carb air cleaner and 8 36lb injectors. check out www.Mass-floefi.com.

Ultimately either package will be put on a 400RWHP NA 347 with port work and custom cam to suit the intake. But right now, which package could I drive for a year until the new 347 short block is ready?

Thanks,
Rob
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Old 06-08-2005, 10:04 PM   #2
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based on 90% street and 3.73 gears I'd say the Holley intake although you did not mention it here, of the 2 listed above I vote Victor.
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Old 06-08-2005, 11:14 PM   #3
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I have the victor efi intake and its bad ass. The thing comes on like a turbo at 4k. you wont be upset witht he victor efi
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Old 06-09-2005, 12:24 AM   #4
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The Victor Jr. rocks when I hit 3k rpm it's like someone flipped a light switch. I have a Novi 2000 pushing air through it.
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Old 06-09-2005, 12:49 AM   #5
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i have run a similar combo..victor 5.0 intake (still using it on my renegade car) 306 11:1 comp victor jr. heads and a custom grind hyd cam set up to rev to 7500rpm..that motor put 375 to the ground n/a...
since then i've seen some better more reliable combos though..i've seen a 331 with afr 185's an f303 cam, and a rpm II intake put 380 to the ground at 6200 rpm.. look into the rpmII if you don't want to ring that motor out.. it's a really good intake!
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Old 06-09-2005, 04:42 PM   #6
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Quote:
Originally Posted by tached93gt
based on 90% street and 3.73 gears I'd say the Holley intake although you did not mention it here, of the 2 listed above I vote Victor.
I know there are better intakes for a 90% street motor; but, I am really set on a Victor 5.0 or Victor Jr. Besides, I can get a good deal on either one. I have also seen that when either Victor intake is on a 347 they can be very streetable with a custom cam. I am currently running a 650DP and a ported Performer RPM and I like that I can spin it to 7000 rpms.

flyin2jz I have been following the other thread about the victor efi and I agree it is an awsome manifold.

Stang5lgt and jdj
I even had a victor jr intake once with my current combo and really liked it on my car; but I bought it used and I think it was milled or something cause I had serious isssues with getting the ports to line up and had coolant leaks. I would have no problem going back to a victor jr.


I know the long runner Victor 5.0 efi will have the possiblilty of offering more torque than the short runner victor jr. efi (Spyder). What I would like to know is if the 4bbl style TB on a victor jr will change the air flow characteristics.

I wonder if my combo with a victor jr. efi maniold and the canfield heads would be a good canidate for one of Jay Allen cams?

Rob
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Old 06-09-2005, 06:24 PM   #7
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My car has no cam stock bottom end. With Victor Jr 5.0 heads and Victor Jr. 5.0 intake with 75mm TB. And of course the Novi. If you got my gallery you can see my motor. You will not gain any bottom end. But it will scream at the top. I know. My car is lowered 2 inchs. And I have tube upper and lower control arms. I took it to the track with a set of BFG drag radials and some good ol low profile tires. I spun tire all the way down the track. My wife said it look like the tires were breaking loose everytime I shifted all the way through 4th. That was last time I was at the track poped a head gasket. My time was 13.1 at 115mph. With street tires. My 60 foot time was 2.02. Good set of slicks would get me into the 12s easy. Anyway Victor Jr. is good for 500hp out of the box on a NA motor. Plus it looks really cool.
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Old 06-09-2005, 08:53 PM   #8
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I like the fact that with either Victor intake it is easy to remove the valve covers. I really like the looks of a traditional carb intake and the motor should spin better with the short runner length, but at the cost of some torque.

Here is some pros and cons I see for both intakes compared only to each other:

Victor 5.0 efi
pros
Long Runner-- More Torque potential
Cam timing not as critical
Clears stock hood
Easy access to valve covers
Easier to swap to a more streetable intake
Easier to add blower

Cons
Heavier than Carb style intake
More restrictive intake tract


Victor Jr. efi (Carb style)
pros
Cool Carb look
Lighter weight
Less restrictive intake path
Motor will more likely spin higher
Easy to add nitrous carb plate

cons
Harder to change to more streetable intake
harder to add supercharger
Throttle linkage problems
May or may not fit stock hood (depending on air cleaner)
Short runner-- less torque potential
Short runner design makes cam timing more critical.

*edited to correct mistakes pointed out by Bullhead

Last edited by Rob50lx; 06-09-2005 at 09:14 PM.
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Old 06-09-2005, 08:56 PM   #9
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Quote:
Originally Posted by Rob50lx
Victor 5.0 efi
pros
Long Runner-- More Torque potential
Cam timing not as critical
Clears stock hood
Easy access to valve covers


Cons
Heavier than Carb style intake
More restrictive intake tract
Easier to swap to a more streetable intake
Easier to add blower
If something is easier shouldn't it be a pro and not a con?
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Old 06-09-2005, 08:59 PM   #10
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buy the "elbow" from CHP, then your throttle body will be the stock location...
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Old 06-09-2005, 09:22 PM   #11
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Bullhead
Thanks, I went back and corrected my post. It's 3am here, my brain is failing me.

kloven
I have thought of the "elbow", but I don't like the looks of it. But that brings up more questions.

1. When using a "Spyder" intake what are the performance differances between a 1000cfm 4 blade carb style throttle body and a traditional 75mm single blade throttle body?

2. Is the GM LS1 style 85mm MAF better than a 80mm Pro-M or a 90mm LMAF?
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Old 06-10-2005, 12:25 AM   #12
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use the longer runner victor efi for sure, other choices better suited for power production and not looks, systemaxII, RPMII, TFS-R
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Old 06-10-2005, 02:54 PM   #13
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Quote:
Originally Posted by Rob50lx
Bullhead
Thanks, I went back and corrected my post. It's 3am here, my brain is failing me.
NP man
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Old 06-10-2005, 06:08 PM   #14
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Have you run your car at Bitburg?



QUOTE=Rob50lx]Bullhead




Thanks, I went back and corrected my post. It's 3am here, my brain is failing me.

kloven
I have thought of the "elbow", but I don't like the looks of it. But that brings up more questions.

1. When using a "Spyder" intake what are the performance differances between a 1000cfm 4 blade carb style throttle body and a traditional 75mm single blade throttle body?

2. Is the GM LS1 style 85mm MAF better than a 80mm Pro-M or a 90mm LMAF?[/QUOTE]
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