Will it fit LT1/4 heads as well as L98's ?

 

I'm also interested in how it would work on a 350 up to about 6000+rpm (stock bottom end)

anyway... Lookin' great!

--steve

 

Is there room to fit a nitrous plate between the plenum and manifold ?

 

Ok...Here's the deal: when we find out how well they work I'll be selling them. I'll either offer it as a completed unit ready to simply bolt on to your heads in place of your current manifold. You won't have to change ANYTHING, just bolt-on and go. Or, I will sell it in "kit" form that will allow you to "roll your own." That would include the plenum adapter, manifold, fuel rail blanks, injector bungs, and t-stat housing. BUT, you have to realize that this sucker takes CONSIDERABLE welding/machining skills to complete in kit form. I will probably also offer just the adapter plenum as well...

Now, for smaller motors. I'll be building a few of these out of the standard Victor Jr. (p/n 2975) manifolds as well and they would be ideal for smaller cube engines because of their smaller runner cross-section. I'm not going to begin to guess what one of these would do on a stock motor simply bolted in place of the OEM TPI manifold; but rest assured it would be a considerable gain over a TPI unit. It also should make considerably more torque than a MR because of the longer runners, but it WILL move your powerband up from where it is with a stock TPI.

LT1/4 guys, I believe GMPP still has single plane carb manifolds available for these engines and that being the case I WILL definitely NOT leave ya'll out. They will be available as well!
-Jeb
Edit: PS- Nitrous plate... No, there's not currently room to fit a 4bbl. carb style plate on this setup. There would be on the Victor Jr., model but not on the Super Victor. However, you can use a TPI plate between the plenum adapter and the t.b.. On my next prototype that I'm working on right now a 4bbl. plate has been taken into consideration but I'm afraid on the big manifold that it might reduce plenum volume more than I care to...


[Modified by jburnett, 6:45 PM 11/4/2003]

 

Great work Jeb. I am seriously considering trying one on my motor too. :cheers:

 

[QUOTE]Ok...Here's the deal: ...
LT1/4 guys, I believe GMPP still has single plane carb manifolds available for these engines and that being the case I WILL definitely NOT leave ya'll out. They will be available as well!
-Jeb
[QUOTE]

:cool: :party: :cheers:


:lurk:

 

The 2975 sounds much better for us with < 400 cubes. Is it possible that the smaller intake will use the same accessories (feul rails, plenum, etc) as the 2925? I know i'm asking a lot, but it would be nice to be able to just replace the manifold when it comes time to up the displacement.

 

I plan on making everything between both manifold interchange; not only for you benefit but for mine...It's much simpler to build something that will work on either manifold than to have to build two seperate versions of the same item...
-Jeb

 

Would you spray 250 through a TPI plate ? I wonder how bad putting the plate in the plenum would mess up air flow ?

 

Hats off to both of you!
Why can't all intake fabrication threads be as civil as this? :eek:
Is cowl induction(shaker) also a possibility with the 4 bl set up?
I wonder how air pressure is as it goes over our hoods at that location?

 

I know the NOS 5151 plate will flow a 250 shot because I've DONE it... Obviously larger solenoids are needed over the standard kit but other than that it WILL work. It also shouldn't interfere with airflow in the adapter plenum as it simply bolts between the two pieces.

Paul, my single plane combination actually uses a 4bbl. t.b. instead of the plenum like I built for the bolt on kit...With my nitrous plate bolted on you HAVE to have a cowl hood to fit any kind of an air cleaner assembly. It draws air from the low pressure area at the base of the windshield. A shaker assembly might be kind of neat but would be more external cues than many of us care for. Plus I don't like the idea of having to cut a hole in my clamshell hood; that's why I built the kit to simply use your twin-bore t.b. and plumb it directly into your stock air intake system. Almost everyone loves the ease of bolt-on stuff. As a matter of fact I'm seriously thinking of going this route with my combination instead of going back to the 4v t.b...That's how much of a success I believe it will be!
-Jeb
PS- I too like friendly threads and am very happy this one has stayed this way...Though I couldn't think of a reason why it wouldn't. We're in uncharted territory and I'm the only one currently doing this so attacks have been non-existant. Plus, I KNOW my stuff is better than everybody elses! :D (that's a joke, dammit)


[Modified by jburnett, 6:12 PM 11/5/2003]

 

What do you think the benefit over the Superram would be? Better airflow at higher rpm?

 

You just said it exactly...I've had the opportunity to run all three manifolds, the SuperRam, MiniRam, and single plane. The single plane beats them all hands down. The SR tends to run out of air at 5500 rpm and even heavily ported ones run out at 6k, they build a ton of low-end though. The MiniRam does the exact opposite, it has decent mid-range and good topend. The single plane has all of it. You'll lose low rpm torque with the single plane over the SR, but it will still make good torque on a big motor; midrange comes on VERY strong and it will not run out of air in the upper rpms with ANYTHING you'd run on the street (and probably anything you'd run on the track). On my 396 the SP made 41 more hp than the MR did at peak hp, and 50 lb/ft more torque at peak. I equate this to the larger runner cross-section and length when compared to the MR, plus it is NOT cam sensitive at all like the SR and MR can be.

I'll still say that for a street driven (particularly daily driven) stock cube up to 383" the SR is damn HARD to beat and would probably be my choice for a mild combination. However, if I had a 383 on the upper end of the spectrum or an even larger engine (400+ cubes) the single plane would get my nod. Even for a 350 based engine with a good cam you'll see a considerable gain over a stock/modded TPI or SuperRam, just realize that it WON'T be in the lower rpm's...
-Jeb

 

Here are some new ones Jeb sent to me.......Wife just called my office and said..."Your new intake just showed up.....I will have dinner ready for you when you get home, so you don't have to come back in 1/2 way through your install!" What a women! :D




Thanks Jeb! This afternoon is going to seem like an eternity till I get my grubs on it! DAMN WORK!

As for the thread staying civil......it better or whoever starts the crap, will not be allowed to run the single plane :D :jester :lolg:

Jeb it looks like you had some writing on either the picture or the intake itself...if its not on the intake itself...I can't read it...if its on the intake...I will see it when I get home from work.

PS: Stay tuned for PART II tonight! See you all then!


[Modified by ski_dwn_it, 1:53 PM 11/5/2003]

 

It's on the intake itself...I wrote two notes; one is where/what I plan on doing with the t-stat housing location in order to get both more clearance and hopefully alleviate having to build a t-stat housing like I did on this one. Second is on top of the plenum; it's how I plan on modifying it.

For the rest of you I now have my grubby little hands on a standard Victor Jr (2925) manifold and will be modifying it. This would be the one to use on smaller engines (like 350's and mild 383's).
-Jeb

 

Jeb if you need a 350 tester and nobody intersted steps up I'll yank my superram for you once I get a clutch and maybe a 6-speed into the car. No track open here until march'ish though. :( I'd probably want to square away my tuning on the superram setup first for good comparisons.

Current setup...

350 4-bolt
clevite h-series rod & main bearings
arp rod bolts
219 cam w/1.6 rockers
hooker 2149 into 3" y-pipe into no cat into flowmaster 3"-> 2.25" y-pipe
superram base/upper
descreend MAF
K&N filter
msd digital 6+ ignition, msd hei coil, msd wires
24# svo injectors

also a full NX nitrous kit installed and waiting to be used

 

Hey Jeb,

What do you think is the max HP that the Victor Jr (2925) will support? I would consider this version instead, especially if I can switch over my Big Shot NOS setup off my carb-ed BBC.

Also, I have a friend here in Indy that owns a foundry. They cast alot of custom racing Heads, intakes, blocks. etc. for some well known builders. They do iron, alum, & magnesium. Right now they are pouring Alum. 427 Corbrajet blocks for Hennisey. This might be a nice option once you get things perfected.

 

Jeb,

If you do not have enough on your mind already.....I would like to order 1 BBC Single plane intake, outfitted with all the fix'ins for Dad's 509 Merlin Block.

Seriously I was thinking about making it a Speed density controlled car over the winter. Give it some thought. :cheers: :cool: :steering:

 

I love seeing people take a hot rodding approach and try diffferent intakes,plenums,manifolds what have you etc...its really cool and hope you perfect the design for a fraction of a MR manifold.

:)
:cheers:

 

I've seen 2925 manifold's on carbed small blocks supporting over 550 hp so I know it would be good for at least that; probably more considering you're turning it into a "dry flow" manifold. And with the short 2925 you could definitely use a 4150 style N2O plate.

Jesse, I've already done several single plane big block EFI manifolds. All of them use 4v T.B.'s though...It would be pretty cool to do one with either a TPI style T.B. or a single bore t.b... I've seen them done this way in the past.

As for being a fraction of the MiniRam's price, unfotunately it won't be...But it won't be higher either; there's a lot of fabrication and welding time involved with building it though. And the components aren't cheap, hell, there's over $200.00 worth of AN fittings on it. It will, though be an easy bolt on and will be fairly priced if it comes to fruition.

Additionally, I know a lot of you are playing with the StealthRam idea. How do I say this without getting nailed like the other threads on this subject?? Umm... I'd really like to see what I can do with the plenum design on one for a C4; if anyone is interested in sending me one let me know. I think the tunnel ram manifolds are actually a pretty decent upgrade for these motors. The only thing I think really sucks is the fact you can't use your OEM 'big-cap' distributor!
-Jeb