Steve Burger

iTrader: (33)

Going 13:1 compression, ETP 225 heads and T-Rex or larger cam on a forged 347. TH350, 12 bolt, 4.10 gears, full suspension. What would the Carb style intake with a 1000 CFM TB be worth over a ported Fast 90/90?

No Internet numbers please.

JL ws-6

iTrader: (50)

I'd be intrested in this as well.. maybe save me the trouble and skip the 90/90 and go strait for the gusto.

6secNaLs1

iTrader: (5)

i would like to know this also

SUX2BU

iTrader: (14)

Carb style intakes are for 7,000+ rpm set ups.

ronan

iTrader: (2)

wow, that's probably the most vague answer ever given to any question asked.

Steve Burger

iTrader: (33)

I will end up spinning over 7K. Sooooo what does it mean now that we have the RPM range cleared up?

JL ws-6

iTrader: (50)

I don't believe for 1 second that it won't work unless you are spinning over 7000 prm. I do believe that under 3000, it will be a little doggy, but only for 7000+, that's kinda bogus.

Fireball

iTrader: (21)

its still kinda new and really hasn't been fully tested (at least at the track)

I've done some digging and it appears to be a slight/modest gain over LSX at 6K and up. It also appears to lose some to the LSX under 4400.

its definately a neat piece

Fireball

iTrader: (21)

Interesting post.

https://ls1tech.com/forums/dynamometer-results-comparisons/311005-spm-hptuners-dyno-results.html

Keep in mind it was over a LS6 with stock TB. Probably would've seen 30 hp going to a Fast 90/90 (I gained 20 going LSX 90/90 over a LS6/ported stock TB)

One could also question the state of tune with the LS6 setup before too...

JL ws-6

iTrader: (50)

O.K., this is all fine on a stock CI motor. What about 400+ CI setup? I'm more intrested to see what it would do on say a 427 or more CI motor.

Guess what I'm trying to get at is I'm running a h/c setup now with a ported tb and a ls6 intake. I was thinking about going ot a fast 90/90 setup next summer... but I know that once I have my chassis working to it's max with the power I have now, I'm gonna start building a big CI motor.. and want whatever intake I am currnetly running to go to the next setup. I expect anything more then a 90/90 to lose somethign on the low end of a 346, but on a 427+ motor, (possibly even more) what would the results be like? I know that's gotta outflow a 90/90, just wondering how much.. and would it be worth it to hold off on a swap until I build the new motor, or do the swap to this style on a stock CI?

Fireball

iTrader: (21)

unless you are going for truly max effort high-revving 346 (serious head flow and large cam), it probably isn't right for you.

Remember too, getting it to fit in the confines of the engine bay and under the hood can be an issue.

Steve Burger

iTrader: (33)

At 13:1 compression and ETP225 heads with a T-Rex or larger cam it will not be a daily driver. This is being built with the drivability needs of: get from the staging lanes back to the trailer without killing the engine.

It will be a max effort setup and I have a cowl hood for most of the clearance issues.

I am trying to figure out if the HP and speed increase is there.

Fireball

iTrader: (21)

My last comment was directed at JL...

Steve Burger

iTrader: (33)

Yeah, I replied to your PM.

383ss

iTrader: (14)

pulled this from another post, I don't think your going to find any better info than this at this point.

so on a 402 the vic was worth about 10rwhp over a LS2 intake from 5000 up and loses about 20rwtq down low

Fireball

iTrader: (21)

unfortunately that stops at 6400 rpm

JL ws-6

iTrader: (50)

I'm not really planning on doing any max effort stock CI setup at this point. What I am tryting to determine is if the single plane intake is worth anything on a stock motor.. which it looks as if it's not really. I'm more intrested in what the results would be on a 427 or bigger motor with heads and cam enough to really feed it, what would the gains vs. losses be vs a ported 90/90 setup? When I start building the new motor.. it will be a min of 427 CI, and should I go for the world block it will be alot more then that... and it will have max compression and whatnot that I can get away with on pump gas, and the biggest baddest heads I can get, as well as plenty of cam to feed it. 1 7/8 merge collector headers will go on, will be a pretty max effort pump gas motor when I'm done. A VFN 2 inch ws6 cowl hood will be making it's way to my car eventually as well, so hood clearance shouldn't be an issue... only thing I will stop at is cutting the actual metal in the cowl of the car itself.... and I do believe that with an elbow that is slightly milled some, and a little milling off the top of the intake, (say .100 max off both together) there will be no cowl clearance issues, only with the factory hood, which won't be a problem.

I was thinking it would be a nice addition to toss on my head/cam setup for a while, but if what I'm seeing is correct, there's no point to it on my ls6 headed small cammed setup that I'm running now. I'm not even sure what I'm making for power at this point.. was 403 before the heads went on.. waiting to retune it in the spring when it warms up some. Thinking it's in the 440 rwhp range.. knowing who's car the heads came off that I'm now running, it should be aorund there.

If anyone has tested the intake with an elbow on a 427 ci + motor, I'd be intrested to see that.

Fireball

iTrader: (21)

if you want to run any kind of "standard" elbow, metal has to be cut.

this car had all the milling you are talking about but that doesn't fix the fact that the motor sits under the cowl



sure some companies make sheetmetal elbows that fit under the cowl, but I kinda question what that does to their flow potential

Matt D

iTrader: (49)

Not true, the victor jr. out performs all other intakes at 5000 and up.

12secSS

iTrader: (30)

That is our intake setup, and as Fireball posted, it wont clear without issues. I had the GMPP intake milled .25 and the elbow based milled .3 and you can see we still had to trim the cowl area. We are using a Glasstek pin-on hood and it just barely rubs, and that is with the top of the elbow was milled as well.

FYI: No need to question the before and after tune, as Ken@HPTuners did the work. I mearly tweaked it at the track.