97Z28SS

iTrader: (5)

The Vic E I got from RamAir is fully ported and machined for the LTx bolt pattern and angle and I have the Nitrous Outlet 860 elbow and I'm going to put a 1" phleonic (sp) spacer and a ZEX perimiter nitrous plate on it. I wanted the single plane conversion because of all the N20 options and better air distribution of the single plane. I have $800 in my setup currently and I still need to buy the oilpump drive, Zex plate and 1" spacer plus misc fittings and AN ends for the fuel rails.

96capricemgr

iTrader: (1)

http://advancedinduction.com/AiEngines.html
Not a victor intake.

speed_demon24

iTrader: (6)

A 4500 tb almost flows twice what a 58mm flows. A 4150 will still edge out a 58mm too. 4150 = ~1200cfm 4500 = ~2000cfm 58mm ~1000-1100 cfm. But like you said the straight shot into the manifold is huge as well.

YSILT1

iTrader: (6)

Here are some pics of mine.

Vic Jr E Intake
Edelbrock Low Profile Elbow
FLP 90mm TB

I had the heads redrilled for the SBC bolt pattern from TEA. The throttle response is night and day from my old ported LTX intake and 58mm TB.

Puck

iTrader: (17)

I was referring to the standard 4150 flanges, which are outflowed by a 58mm monoblade.

Turnin20s

iTrader: (12)

I have seen your pics but the only thing that I don't like is how low the edelbrock elbow positions the TB, but I also don't like how high the wilson manifold elbows position the TB, does the wilson clear an SS hood??

Other than that your motor is very clean, how do you like the 24x? I'll be ordering mine in the spring when my suspension is finished, I'm just having a hard time spending more money on the harness than I am for a watts link But I know it will be worth it

Caprice, the AI setup looks good, but I think there are other options out there too, but a bolt on setup would be nice. I would rather see the setup with the water neck on the intake cut off, but I have a local guy that can do that for me at a decent price. I know its just a cosmetic thing, but if I'm going to be dropping a lot of coin on something I want it to look as good as it functions

Turnin20s

iTrader: (12)

Another one for the MAF, what are you guys using if any? I was thinking about getting the Z06 100mm or whatever size it is, I honestly can't remember. But having the LS1 computer would make that MAF easier to use IMO

hitmanws6

iTrader: (20)

The 100mm is pretty easy to tune. Id recommend a Callaway if you can find one or a TSP MAF. A lot of people have had trouble with the LPE MAF

96capricemgr

iTrader: (1)

Is that throttle response derived from the intake or from having a larger TB that acts like an on/off switch.

Here is an actual dyno graph for this mod.

https://ls1tech.com/forums/lt1-lt4-m...ml#post5929007

Turnin20s

iTrader: (12)

Thats interesting, I guess I expected that but the gains up top are a little more than I figured.

I guess I'll see when my time comes. But when I do my switch I should have a new motor built. But if I end up doing the 24x kit in the spring (possible opti problems) I'll probably do the single plane/LSx throttle body/100mm MAF. That way its already done and I don't have to change the $850 wiring harness when my new motor is ready to install.

96capricemgr

iTrader: (1)

As expected you are ignoring the losses below about 5200 and focusing only on the gains over 6200rpms. With a pcm that handles over 7000rpms sure that might be fine, and you noted considering the 24x conversion BUT, IMO if you got better guidance in choosing an intake to use you could eliminate the low rpm losses and still see a gain mid too top. The popular intakes for this are rated to 8500rpms yet people want to use them on medium sized motors only going to 7000ish. Classic miss application of parts just like overcamming.

97Z28SS

iTrader: (5)

Caprice you make excellent points and I appreciate the link to the dyno graph which shows where the gains and losses will be with a single plane setup and to help with the low/mid range tq loses I'm running 4.30's in my m6 car so the gearing will help make up for the tq losses down low.

Turnin20s

iTrader: (12)

I guess I should have stated that I expected the losses down low, as well as the gains up top, but the gains up top are more than I really expected.

My new motor should easily spin to 8000 rpms (not saying I'm going to shift it there, but it should be able to rev that high). I have considered a dual plane intake with an elbow and LS style throttle body, but then I would have to drill the bungs for the injectors and the vic e intake already has all of that done. I'm still researching my options but I want to get away from the LT1 intake, and have had the dual plane intake bouncing around in my head for a while.

Wicked94Z

iTrader: (26)

dual plane is a bad idea, the sole purpose of the dual plane is to increase torque, throttle response, and vacuum signal with a CARBURETOR. We do not have to limit the plenum size for atomization and vacuum signal with fuel injection. It makes sense to have the biggest plenum possible in a fuel injection application, hence the ITB stuff (unlimited plenum). I believe if the guy in the link above, posted by 96capricemgr, had his intake "corrected" from it's as-cast form it would have matched the LTx manifold down low.

Turnin20s

iTrader: (12)

That makes sense. Like I said I haven't really been doing a ton of research on the single plane, but now that you said that I agree the dual plane isn't a good option at all. I think I'm going to stick with my original plan and get the Vic E intake, I just want a setup that will fit below an SS hood, and I don't mind if I have to trim the cowl a little bit, but I don't want it completely hacked off.

But your saying that if the guy with the dyno graph would have had his intake ported and cleaned up it would have matched the performance of the LTx manifold? Thats what I assumed, but want to be sure.

Puck

iTrader: (17)

Like most aftermarket heads, single plane intakes can use quite a bit of work out of the box.

What some guys are doing to them with a grinder is pure art.

Wicked94Z

iTrader: (26)

most aren't using grinders except in the runner, bridgeport on everything else since they're removing so much material. A fully done 2925 seems to be worth about .1-.15 over as cast. If you really want to get crazy on the plenum and start welding (see jake's brodix manifold) you'll see even bigger gains.

robsquikz28

iTrader: (246)

Yep, Jakes intake was crazy ported. But thats for racecars

Wicked94Z

iTrader: (26)

nope, just for shitty brodix hv1000s

robsquikz28

iTrader: (246)

and your racecar

mine is just a turd