Austin@HPE

What do ya'll think will make more power on a 440 with tfs235. A fast 92 or a vic jr with a edelbrock cast 90 elbow. Both will be running dbw 90mm.

DAS1998

iTrader: (12)

here is my expierence with vic jr.... could not find the correct seals for the manifold anywhere.... not to say you could not use the paper but it is better to use orings. I had to machine the sides of the intake to fit on my L92's. The cast Elbow is not the best looking when you use an aftermarket TB. As far as performance, with more cubes and a cam above 600 you will make good power...... with out losing alot down low. Smaller Cubes you definatly lose torque. Both manifolds are good if i were to do it again i would buy the fast.

MelScrilla

iTrader: (2)

I would consider the super victor on a 440 with a 4 barrel 4150 TB if you could get it to fit under the gto cowl and hood (or if you dont mind doing some modification).

It seems like the key to making power with a single plain is having a cam designed to take advantage of its strong points.

niceguyyy01

iTrader: (13)

I wondered about this too, with all the talk about the fast manifolds only flowinga certain amount then leveling out. On a naturally aspirated motor, I would think the single plane would out perform the fast. But I'd be curious to see if it would work with smaller motors say 408-427ci?

MelScrilla

iTrader: (2)

I've heard anything over 400 cubes could benefit from a single plane, but even on a smaller motor in a allout race application the single plane would be better I think.

Dustin@PremierAutosports

iTrader: (2)

Victor Jr with 4150 tb work excellent for my stock LS2. I have to spin it pretty hard, but it makes just over 540whp through a th400

JFM-jr

iTrader: (23)

Exactly what I have been told by most. If your not planning on turning the motor beyond 7K the benefits dwindle. 540 thru a turbo 400 is some serious power how hard are you turning?

Dustin@PremierAutosports

iTrader: (2)

That's spinning it to 7200. Looking to turn it a little higher.

I know you have to rev the **** outa the setup, but it pulls like a turbo car up top.

Dustin@PremierAutosports

iTrader: (2)

btw: looks like we might have the same goal. mine is a stock LS2 shortblock also.

Braciole

iTrader: (6)

Victor JR sounds like alot of work for minimal gain. I think its crazy to spin a stock bottom end to 7200-7400 Rods in a stock LS2 are the weak link IMHO. My Ported Fast 92 is awesome!

Dustin@PremierAutosports

iTrader: (2)

I wouldn't say minimal gains if you get a cam setup for the vr jr. My car runs 130mph in the 1/4 n/a and it's built for nitrous.

I know i'm stressing my rods pretty bad, but I think with some rod bolts it will be a bit safer

JFM-jr

iTrader: (23)

Yeah you dont have the benefit of the weather that I do. I run my numbers in the fall Northeastern air. If you ran in the weather I do you'd have been where you lookin to get easily.

Dustin@PremierAutosports

iTrader: (2)

We got that super thick air down here. All the local radio stations call it "air you can wear" lol

your's isn't doing to shabby with ported 5.3's and a fast.

MelScrilla

iTrader: (2)

What do you think a Super Victor would do since it operates at a lower RPM range?

Austin@HPE

The 440 ls7 is actually in a c5. With tons of gas. We put a fast 90 that had been ported. Power flat lines at 6500 and pulls to 7100. I have all the right top end stuff jesel j2k's kmotion springs. cam is 251/259 .624/.624 113. We put mid 500's through the 4l60 and alot more on nitrous. I just feel there is more to get out of it. I trap in the 7000 range.

02SOMWS6

iTrader: (6)

If it's a LS7 why wouldn't you go with the new FAST 102mm? A 90/90 set up will never keep up with those cubes but a 102 would work out great

Austin@HPE

It has trickflow 235s not ls7 heads.

kjmdrumz3

iTrader: (1)

Sorry for ressurecting this baby from the dead BUT

I'm in the same boat as a few others I think. 408 motor, TFS 235 heads, big cam (258/262 .645/.645 112) and the car is making peak tq at 5500 and peak hp at 6300!!! Looking at the curve, it looks like it wants to keep pulling but falls off a bit and stays pretty level to 7000. I think my setup should be peaking around 7400. Obviously the FAST 90 is choking me. I'm debating on a Vic Jr with elbow or just pulling the trigger for the Super Vic and getting a 4" cowl. Which would be better?

StreetStalkerZ

iTrader: (1)

Don't put a elbow on NA applications! The elbow will act as a wall and will not let the air move into the plenum correctly to all the intake runners. With FI applications they work because the air is being forced into the runners.

If you have to run a elbow get the wilson and put a carb spacer on it. That one has the least arc or bend to it and the spacer will make it taller allowing the air more time to straighten up before entering the plenum,but the your still probably 30hp down from a 4150 throttle body setup. I have had both and the 4150 throttle body is night and day compared to the elbow setup on a NA application.

kjmdrumz3

iTrader: (1)

Thanks for the info. I just don't have the $$$ right now for a new hood. Was hoping that the Vic Jr would be enough of a pickup from the FAST to go ahead and do it. Guess I'll wait a little longer.