five7kid

iTrader: (14)

Considering another route for my 4" stroked, L92 headed, Erson cam'd (234/242 duration @ .050", .621"lift) LQ4. I originally ran it with an LS3 intake for a year, then switched to a Holley Hi-Ram for the last two. It's basically a 1/4 mile warrior that's driven to the track. Tranny is a 4L80E with a converter that flashes to about 4600, 3.89 gears.

The Hi-Ram dyno'd at 20 HP more than the LS3, but in the process lost some low end (60' times dropped of slightly, but ETs were slightly better). I shift at 6300 (cam card says powerband is to 7000, but it drops off well before that). Main reason I'm considering an intake change is to get some of the low end back (the Hi-Ram is more intake than I need).

Here are links to the three intakes (I verified Summit's info was correct on the Edelbrock and Holley websites):
Super Victor:
https://www.summitracing.com/parts/edl-28265
Victor Jr.:
https://www.summitracing.com/parts/edl-28455
Holley Mid Rise:
https://www.summitracing.com/parts/hly-300-136

All use a 4150 mount base. I'd use this elbow for my current 92mm Big Mouth TB:
https://www.summitracing.com/parts/hly-300-240
The vacuum source options are attractive on that elbow.

Not sure what the difference is between the Super Victor and Victor Jr. They both have the same listed powerband. The Holley powerband claim would seem more in line with what I've seen from my engine. My converter should get me immediately into the powerband of any of the intakes. (For comparison, according to Holley the Hi Ram powerband is idle-8000 - I believe the 8000 part, but not the idle part.)

Curious if there is any experience here with any of these intakes. FWIW, my son used the Holley cathedral port intake with an Edelbrock TB elbow, 90mm TB on his 5.7 LS, it ran better than it did with an LS2 intake.

five7kid

iTrader: (14)

A little surprised there weren't any responses to this.

Input from another board suggested that the Holley Mid Rise isn't all that great. So I'm leaning toward the Victor Jr if I do anything.

ShiftyCapone

iTrader: (7)

Five,

If you only gained 20hp by ditching the LS3 I would go the route of a Mamo Ported Fast and or MSD with a 102mm TB. You easily will get that 20 back yet still retain all of the power under the curve. The cost of entry is higher for either of these two compared to your choices, but they basically give you the cake and a fork to eat it to.

http://ls1tech.com/forums/generation...orted-msd.html

five7kid

iTrader: (14)

They also give you heat soak sitting in a hot valley between rounds. That cake is hard to swallow.

I've never been impressed with the FAST bang/buck ratio. Primary reason it wasn't an entrant for this contest. The MSD is in the same range.

The Holley elbow can take a 102mm TB, but I've got other fish to fry before considering that.

dlinger

iTrader: (4)

Out of box, Victor jr is better than super vic. I have read several that went back to victor jr as they lost time with super vic. Super vic needs alot of grinding below carb. I have one on my Nova, but do not know any performance gains as I have not had it back to the track.

Sorry for posting, I don't have a clue on LS (or maybe that statement is too long).

ShiftyCapone

iTrader: (7)

I agree that the FAST square port doesn't give the HP per dollar spent versus the stock LS3 intake. Cathedral port is much different. However, when ported, the FAST/MSD intakes are supporting 700 HP at the fly. The new modular runner sizes only make them more tunable. For those with hood clearance limits these are the only option. As far as heat soak, there is some innovative heat shield matting that guys are putting on the bottom side of the intake to prevent soak from the valley cover.