Mykk

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

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mcbchild

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.

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388 sbc,400 cast-steel crank, forged pistons 0.060 over, 11 to 1 forged flat top pistons, Isky custom 251@.50 259@50 108 LSA mechanical flat tappet. .544 int - .547 exh lift, 1.6 Aluminum rr, Brodix track 1 heads, Victor Super intake with Holley Race 830 cfm carb, NOS, Pertonix HEI Race Dizzy, Weiand Aluminum water pump, Holley black electric fuel pump w/regulator, Turbo 350 trans w/3500 stall, 9 Bolt 4.10 rear disc, Comp Cams SFC, Eibach Drag Launch rear coil springs w/passengers side airbag, 90/10 struts, Weight 3400lbs. with me and half tank of gas, 1 3/4" Doug's LT headers, 3" complete dual exhaust, Stock Torque Arm w/ poly mounts to the trans, Lakewood LCAs, 27x10.5x16 M/T ET Streets

igotta355z28

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...