Curious as to how the custom plenums are doing.

 

I've got approx 100 miles on mine(new long block too). Gonna add a few more hundred and then gonna do a dyno pretty soon here to get A/F ratio and other info to relay back to my chip burners(Formato's).
Numbers coming soon :D

 

On a 391 huh :cool:

I'll be waiting. Hopefully someone with a 350 chimes in soon too

 

theres several guys on this site running them now, theres several guys on several other sites running them also, EVERYONE so far has reported back that once they got it tuned correctly for the massive increase in airflow that it was a major increase in the engines abillity to make hp in the 4000rpm-6500rpm ranges
again look at the dyno results, vs a ported siamese aftermarket base, the CUSTOM STEALTH RAM pulls hard to over 6600rpm
http://www.eecis.udel.edu/~davis/z28...age021105.html
if your interested heres a few links

link
edelbrock base
used TPI

vortec tpi base
compare that to a super ram at $1300 plus

link

or the mimi ram at $1250
link















[Modified by grumpyvette, 5:06 PM 6/18/2003]

 

pictures you might want to look at

 

Maybe someone can help me as I'm a little confused. Does the Stealth Ram accept the stock TPI fuel rails? :confused:

 

NO it only accepts the HOLLEY or custom made fuel rails and pressure regulator (the buick turbo PRESSURE REGULATOR can be adapted to fit) the stock chevy fuel rails won,t fit. the throttle body and injectors and all sensors DO FIT, you will need to swap to a chevy small base HEI (cheap at salvage yards)or HOLLEY 890-160 DISTRIBUTOR for clearance reasons
THE STEALTH RAM IS A TUNNEL RAM INTAKE DESIGNED FOR MAX HP IN THE 4000rpm-6500rpm range, IT GREATLY increases the POTENTIAL air flow entering your cylinders compared to the highly restrictive TPI

 

http://forums.corvetteforum.com/zerothread?id=582814

This is the way to go if looking for a plenum. The quality and potential is much greater than any other I have seen posted.

 

FACTS
(1)I WENT TO FRANK WITH MY IDEA FOR THE FIRST OF WHAT TURNED OUT TO BE 9 PROTO TYPES FOR THE CUSTOM STEATH RAM PLENUM
WITH NO TESTING AT ALL, HE TOOK MY FIRST DESIGN ,MODIFIED IT SLIGHTLY TO LOWER COSTS ,TOLD ME (GO $%%)AND BUILT HIS OWN FOLDED SHEET METAL VERSION TO LOWER MANUFACTURING COST WHILE NEVER HAVING TESTED IT ON A CORVETTE. OR FOR THAT MATTER ANY ENGINE
(2), HE NEVER TESTED IT ON A RUNNING ENGINE BEFORE FINALIZING THE DESIGN,
(3) THERE ARE SEVERAL REASONS I REJECTED THAT DESIGN IN TESTING
IF HE WILL TELL YOU ..............ASK HIM?





[Modified by grumpyvette, 12:34 PM 6/20/2003]

 

My confusion arose from the new Summit catalog which states: "All factoyt fuel injection components simply bolt on." Page 33, catalog with red Chevelle on the cover. Check it out. :nono:

 

call summit, tech support or better yet HOLLEY tech support................(270) 781-9741
they wrote the advertizing copy.... incorrectly, you will require fuel rail kit # 534185 that costs $ 173.69 additional from summit the stock chevy fuel rails and fuel pressure regulator will not fit, the HOLLEY STEALTH RAM and keep firmly in mind the standard plenum will not fit under the stock corvette hood. If you look closely at the upper right corner picture in that catalog on page 33 of the complete stealth ram youll notice the fuel rails are totally differant than the stock chevy fuel rails and FYI, the picture even has them installed swapped end for end in the catalog, the correctly set up fuel feed starts on the pass side rear and the bye-pass line hooks to the drivers side across the front under the throttle body then feeds down the drivers side fuel rail to the rear, the cross-over line is properly mounted on the front between the fuel rails, not as its shown in the catalog.
,look closely DAVID ALLEN from
http://diabolicalperformance.com/
HAS IT CORRECTLY MOUNTED WITH THE CORRECT FUEL RAILS




NOTICE IN THIS PICTURE THE FUEL PRESSURE REGULATOR IS AT THE CORRECT LOCATION, (DRIVERS SIDE REAR) on this custom stealth ram for daves corvette



[Modified by grumpyvette, 10:03 PM 6/20/2003]

 

Looks really nice. This could be what I pick instead of the Super Ram :cheers:

 

So, does anyone have an all inclusive parts list with some pricing to get one of these on a vette?

 

I won,t get into details other than to say, that was the first proto-type plenum design I took to frank, he took my idea, told me to (#$#$%^) and redesigned it to make it a cheap to manufacture,THIN folded aluminum design , that PROTO TYPE he sells was never tested on a running engine to my knowledge before he offered it for sale , my original similar version FAILED TESTING FOR SEVERAL REASONS, he still sells it
I got a second company to build and test the next 8 proto types, the correct design is sold by
stealthram link http://www.eecis.udel.edu/~davis/z28...age021105.html
the CHEVY TPI is about 9.5" tall at the rear and about 8.8" tall at the back of the throttle body
the stock stealth ram is 10" tall front to back with a strait forward level throttle body mount and won,t fit under a stock C-4 corvette hood
the
stealthram link
is about 9" tall front to back with a down angled throttle body for increased clearance and can very easily be made 8.5/8' tall with minor machine work for greater than stock clearances IT will fit under an unmodified stock corvette hood
it was tested ON CORVETTES for several months BEFORE being offered for sale
its powder coated to stop corosion
its powder coated to slow heat transfer from the hot engine compartment to the air in the plenum
It does NOT have internal bolts that can come loose and fall into an intake port
it has no top gasket to leak
it has greater distributor clearance,


[Modified by grumpyvette, 10:06 AM 6/23/2003]

 

Wow, there are some good prices on TPI stuff...

 

TTT

 

Grumpy,
Does it have a provision for EGR?

 

Does it have a provision for EGR?
NO, and NEITHER DOES THE STANDARD HOLLEY STEALTH RAM,
but I should have a OPTIONAL KIT available shortly for those wanting to keep the 9th cold start injectors hooked up,
while its not necessary, and has no effect on performance once the engines up to temp. it makes for slightly quicker starts if your still running the older cpu.
even the holley version does not have that :D



[Modified by grumpyvette, 7:07 PM 6/26/2003]

 

Just a warnig to anyone considerng the low quality black plenum.
http://corvetteactioncenter.com/foru...threadid=30804



CHECK OUT THE LOW QUALITY OF WORKMANSHIP IN THE ENGINE COMPARTMENT.

THE PLUG WIRES ALONE SHOW A LACK OF BASIC ENGINE KNOWLEDGE

THERE ARE BETTER CHOICES FOR THE EDUCATED BUYER


[Modified by Blown Vette, 10:30 PM 6/26/2003]

 

BLOWN VETTE, Im trying to figgure out what your motivations are for trying to knock a product I KNOW FOR A FACT youve never purchased , nor ever tested. Are you working for my competitor and having no facts or data just trying to slam the product on looks alone

first that was a picture of ONE of the test mule cars with a pre-production test plenum

I tested the product on running engines, unlike the competitors product
you have no idea how fast that corvette runs
I can only conclude you have no direct knowledge of how it runs, nor do you care, and must be trying to promote my competitors product with no facts or data to go by only a nasty attitude.
unless you have independently verifiable data your dealing in your personal opinion, based on no facts at all.
and you know what they say about opinions.....


[Modified by grumpyvette, 1:37 PM 6/27/2003]