Super Victor manifold, streetable? - Third Generation F-Body Message Boards

Mykk · 05-06-2009, 10:34 PM

Hey Guys,

I have just recently ditched an Edelbrock 1405 carb in favor of a Speed Demon 1282010VE 650cfm. I am more than pleased with the performance of the Demon. But, just as with the addition of any performance part, you always feel like you could get more.

Right now I have a Professional Products 52028 crosswind manifold, which is a cheap chinese version of the edelbrock RPM Air-gap. I've been happy with the manifold, however after doing a cam & heads swap a couple weeks ago I noticed the manifolds ports were tiny compared the heads ports. Instead of spending a couple hours port matching the manifold (ie: polishing a turd). I figured there's probably a better manifold on the market more suited to my needs. After surfing edelbrocks website I see there is a Super Victor manifold made for the Vortec bolt pattern/port location (the only Victor jr I can find for vortecs is for a 2brl carb)

here is my engine combo:

.040" over 86-95 four bolt, one piece rear, roller cam block
Patriot iron 'Vortec' heads, 2.02" / 1.6" valves, 185cc intake runners
Comp XR276HR-10 cam & Proform 1.6 ratio aluminum roller rockers
.535" int / .544" exh
224 / 230 dur@.050"
110 lobe sep, 106 int centerline
Comp Beehive 26918 springs & 787 retainers
Comp hardened pushrods
ZZ4 crank & rods, balanced
Speed Pro H345NCP-40 pistons, .004" from deck @TDC
10.6-1 static compression
16 degrees base timing, 34 degrees max @ 3350rpm + 8-10 vacuum advance
MSD 6a, Summit dist, Accel coil, Taylor wires, NGK TR6 plugs
N.O.S. 125HP wet shot nitrous
Hooker long tubes, 2.5" y-pipe, single 3" exhaust, Flowmaster Super 40 dumped
4:10-1 rear gears
3200rpm stall lockup converter / 4L60E trans / Powertrax No-Slip locker
22" rims w/ 30.4" tall tires
...All in a 4300lb pickup

This is my daily driver, I use it not only to get my butt to work everyday but to haul my music equipment to band rehearsal & gigs. Because the 4l60e has a lockup converter, it does spend alot of time locked @ 1500-2000rpm. 75mph is @ 2500rpm locked in 4th

For those who care; on a 250 mile round trip from Prescott Az (5400ft elevation) to Chandler Az (1200ft) and back the truck got 25MPG down & 17MPG back, from stop light to stop light around town I pull 12-14mpg depending on how much tire I spin

So, now that I overloaded you with information. What do you guys think for an intake manifold? Super victor just too much open plenum for a daily driver? Is the Edelbrock RPM Air-gap that much more superior to the chinese copy? Do you have any other suggestions?

Cheers ~Mykk

mcbchild · 05-07-2009, 11:50 PM

If you are spinning that engine to 6800-7000 rpm, then it will work great, but the 185cc heads you have listed here tells me that that manifold is too much. You can het it to work, but not to it's full potential and will suffer badly on gas mileage wise.

igotta355z28 · 05-07-2009, 11:55 PM

stick with a dual plane intake especially on a daily driver....I know the real performer rpm air gap intak is a great intake for both low end and top end power dont know how good the knock off performs...i say upgrade to a real one and port match it....stay away from victor jrs and the like unless u dont want any low rpm power. you are a daily driver u need good airflow velocity at low rpms...