Extremely appetizing.... but results on a stock TPI motor, a medium modded, and your 383 would be great. I personally am stock and want an upgrade that is cheap-er but can be flexible and just as quality in performance as the engine grows with mods.
Can't wait to hear about the package with those dyno results...if possible! :)

 

What about the distributor that needs to be used?

 

From what I understand, you need the early model smaller distributor, or a remote mount HEI setup(?)

Also, the IAC valve could inetrefer with the top of the thermo housing, but this can be gotten around too.

I'm sure he will fill us in with answers on these questions.

 

:iagree: Hear, hear, brother. WTF is up with all the nit-picking?

 

By the way, my payment is on it's way. This is going on my 427 and I don't have to do any mental masturbation to be absolutely confident it's going to kick butt.

 

i dont need dyno results! who cares!? where do i buy one??

 

Here are some dyno results I found on the web for a Holley Super Ram off the shelf version.


http://www.eecis.udel.edu/~davis/z28...age021105.html


[Modified by ld85, 6:32 AM 3/23/2003]

 

THANK YOU LARRY FOR THE DYNO,
AS YOU SEE THE RESULT IS THAT ON THAT dyno run THERE was a 66 hp gain over A PORTED TPI AFTERMARKET INTAKE, MOST IMPORTANT I THINK IS THE FACT THAT THE RUNNER LENGTHs WERE CUT DOWN TO ABOUT 3" (like a MINI-RAM) and the PORTS WERE LARGER THAN THE STOCK CHEVY TPI IN THAT EDELBROCK INTAKE BASE, BOTH FACTORS SHOW THAT THE STOCK TPI INTAKE IS EVEN MORE RESTRICTIVE. THE HOLLEY INTAKE WILL SHOW AN EVEN LARGER GAIN IF THE COMPRESSION AND CAM DURATION ARE INCREASED TO THAKE ADVANTAGE OF THE FAR GREATER AIR FLOW AND RAM EFFECT THE HOLLEY INTAKE PROVIDES


[Modified by grumpyvette, 4:14 PM 3/23/2003]

 

Congratulations on getting it this far! I'm sure you'll have a lot of success with it. :cheers:

Just a couple of comments that might help performance and increase sales.

1) Mask the throttle body face of the plenum during powder coating. When you peel the masking off you'll have bare, machined aluminum. This will give the throttle body gasket a smoother surface to seal against. Typical powder coat is .003"-.010" thick and some (like yours appears) are highly textured. Even if you torque down the 4 TB bolts as tight as possible without stripping the threads in the aluminum plenum, you might not get enough clamping force to drive the thin paper gasket into all the powder coat texture, resulting in a vacuum leak. There is a lot of TB gasket surface area! Check with the powder coater but masking that surface should cost less than $1. (also, since the TB covers this area I doubt it would be subject to "greasy fingerprints" or "corrosion".....which is actually oxidation)

2) Pick a powder color as close to 'natural' aluminum as possible. I'd suggest taking a Holley SR intake manifold to the powder coater and ask them to match it as best they can. If they have nothing close in color then ask them to get the right color or find another powder coater. My guess is that your sales will go up if it looks more uniform in color and doesn't look like an "add-on". You know how most Vette guys/gals are about apprearance of their 'babies'...... :)

Just my 2 cents.
:seeya

 

The Dyno gain is 46 hp gain at hp peaks and down 27ft lb of torque at peaks, the power band are complete different and unfair to compare at 6600rpm. You keep comparing it to a TPI, that most of us know is restrictive. I wonder how the Holley stacks up to a MR or a SR the two popular choice for intakes. I know the Holley flows more CFM but does it have enough velocity to be useful for a street motor or even for a 350? Does the Holley need more gear ratio?

 

Good question. That is also what I want to know.
:cheers:

 

Link to a bone stock camaro that put the standard Holley Steatlh ram onto his 5.7.
http://www.chevytalk.org/forums/Foru...ML/000534.html

 

Another question, you mentioned that you have a stroker motor in your Vette. How close is this to the 383 SR build up that most do (SR/219/AFR190's)?

 

I did a quick search on thirdgen.org and found:

HSR::

355, AFR 195 street port, 224/224 560/560, auto camaro = 380rwhp, 432rwtq http://www.thirdgen.org/techbb2/show...ight=224%2F224

GM High Tech Performace 2 part HSR, 1st part = May '03

350 AFR 190, HOT cam, ZZ4 short block, auto camaro = 342rwhp, 352rwtq (comparison to siamesed tpi) http://www.eecis.udel.edu/~davis/z28...age021105.html

 

how does something so simple get so ugly??

i don't like to call out names, but ...
NOT STOCK, you need to relax... just cuz someone logged on twice and didn't answer your question to YOUR satisfaction you throw the BS flag?? not good etiquette... we're not all here to serve your needs. maybe you could have sent him a much more polite personal e-mail requesting more info on R&D and testing procedures?? or even a more polite post requesting the same info??

all grumpy is claiming is that he has made a box that will perform similarly to the box that the stealth ram comes with, but will fit under the stock hood.

how much testing does that really require? a dyno comparo would probably be great, but he already said his dragstrip times were similar with both boxes and a lot of serious drag racers put more faith in times than dyno numbers.

i think it's great that someone took their own time to attempt to develop something that corvette owners have obviously shown an interest in. Holley won't develop one for us, betchya that!

grumpy, i also agree with some of the suggestions made about how to improve your product.

i'm not surprised by grumpy's response considering his chosen forum name and NOT STOCK's attititude!! (except i'm not sure if grumpy refers to his demeanor or his vettes? haha). i'm sure that in the future he will attempt to be more "businesslike" and "professional", as well as become a supporting vendor if he is not already.

should we consider how "unprofessional" it seems to comment on someone elses post about their product while stating that you are attempting to develop a similar product. darn tootin that is a conflict of interest! you probably shouldn't comment on this post, on grumpy's product, and if you want to determine the demand for another TPI manifold, or "advertise" it, you should probably start your own post (after becoming a supporting vendor, of course)

WHEW, I LOVE this forum and it has a LOT to offer!! i had to comment cuz i really don't like to see things degenerate this way. let's all try to be civil here?? maybe i'll start a basic rules of etiquette post for people to refer to when in question??

ok, am i gonna get flamed for some reason?? :D :D :rant:

 

I would just like to comment that my hair is falling out, and I'm only 23. :D It could be worse, so I agree with the level-headed posters in that we should all try to keep some perspective and remain civil.

Personally, I fear the stealthram won't be such a great street-rod intake given the high rpm powerband (that and I have an auto, low rpm motor)... but for the strip it sure looks promising. Thanks to Grumpy for taking the initiative as Im positive there is a definitive niche for the modified plenums. I'm sure once these start showing up under other members' hoods without complaint, that a lot of the questions will dissipate and these puppies will really start to sell. GRUMPY: When's the IPO?

:cheers:

 

I'm going to throw in my 2 cents again here. Before I do that, I'll say I'm an engineer but an electrical engineer so my experience with engines is strictly "hands on", not scientific.

I've noticed several folks wondering about the low-end torque or "streetable" nature of this intake. I'm putting this intake on my 427. If I were starting to build my engine from scratch right now, it'd probably be a 454. My engine is built using an aftermarket Dart block. You know you can get aftermarket small-block blocks now with 4.25" bores? My engine is a 4.0" stroke. Combine my stroke with that bore and it's a 454. Now, think about airflow with that intake if it's on a 454. I'm not saying everybody has to go out and build a super-stroker, but more folks are starting to "pull out the stops" and buy aftermarket blocks to build their engines. When you do that, there's sort of no reason to build anything less than a 454 small-block. When you think of it like that, this is the type of intake you want. Anything less would be too restrictive on the top-end. "just my opinion" :seeya

 

So please answer the big question for us folk stuck with smog checks....does it have egr!?

 

I agree, No PAY, No PLAY. Mods what the deal with this one, uh?

(not bashing at the product, just the post)

Later :cheers:

 

I don't feel like hunting for the thread, but I've read you are allowed to mention a product you have IF no supporting vendors offer the same product.