I have contacted and worked with several custom intake builders, this is one of several TESTED PROTO-TYPE PLENUMS (unlike the TOTALLY untested PLENUM offered by others made of folded thin aluminum) this one will be in production shortly



A C-4 compatible height plenum that fits the superb flowing HOLLEY EFI STEALTH RAM base yet fits under the stock C-4 hood line
This is a quantum leap forward in airflow over the stock
EFI intake runners and base
The aftermarket base flows significantly more air, than the stock EFI intake
CAREFUL DESIGN changes to the CUSTOM C-4 COMPATIBLE PLENUM designed and tested by FASTERDEALS.COM, INC. Allows a C-4 owner to now fit the superior horsepower potential under a C-4 hood; it has several important design changes to better match the C-4 engine compartment
For EXAMPLE
The rear of the plenum is slightly angled for improved distributor clearance,
The vacuum fittings are moved to the sides for improved distributor clearance, in the tight C-4 engine compartment, the throttle body is angled downward for greater hood clearance the FASTERDEALS.COM, INC design is 3" tall versus original aftermarket plenum which is about 4” inches tall, this brings the height down to about 9” tall to allow the stock C-4 hood to close. (btw stock TPI intakes are 8 5/8" in front and 9 1/2" in the rear)
The FASTERDEALS.COM, INC design plenum will be priced at $249 plus shipping and handling (PLENUM ONLY,DOES NOT INCLUDE STEATH RAM BASE, BASE AVAILABLE WITH CUSTOM PLENUM SHORTLY)
QUESTIONs CALL 1-561-798-9067

http://temp.corvetteforum.net/c4/ld8..._stealhram.jpg

http://temp.corvetteforum.net/c4/ld8...ram_plenum.jpg

http://temp.corvetteforum.net/c4/ld8...hood_close.jpg

http://temp.corvetteforum.net/c4/ld85//otherangle.jpg

<b> pictures are of one of the final TESTED proto-type plenums, the finish on production plenums will be smoother, these are custom made ! it would cost you over $1000 to have most custom shops build you these but they are in production and will be shipped shortly</b>
as most of you know the stock TPI airflow is the MAJOR restriction above 4500rpm,as it flow only about 180-200cfm, the HOLLEY stealth ram flows more than 50% more air potentially allowing over a hundred plus hp gain with other matching parts that allow the engine to breathe

 

 

Ill repost the picture link shortly, the pics exist Im just not good at posting them

 

I would think it would be cheaper/easier/more efficient to mill the HSR base down where the plenum bolts up. No need to remove more than 1" of material. This would provide propper hood clearance (at least in f-bodys) and shorten runner length.

 

Looks like a backyard hackjob To me.

What did you cut them on, a Harbor freight bandsaw ?

 

"the finish on production plenums will be smoother..."


Damn Bort... they said the finished version would be nicer :P

 

Is that plenum a one piece design, or is there a "lid" to it?

 

One piece. How exactly is it tested, if it's just a copy of the stealth ram minus its flaws? Seems like it's pretty important to the vette crowd, but I don't see why anyone with an fbody would choose it over the stealth ram plenum unless it's cheaper.

 

The only reason I can think of is if it would be short enough to be able to use a Strut tower brace!

 

no theres no removeable lid , that caused potential leaks and bolts that can come loose and get sucked down an intake port, not to mention the lid flexes slightly as it heats even if its up to 1/4" thick
NO you cant mill down the HSR base BECAUSE it causes the following problems

no room for the water neck/radiator connection

throttle body linkage interfearance with both fuel rails and connections

fuel rails hit throttle linkage bracket mount

sensors in manifold hit throttle body

heater hose to throttle body connections hit water neck and sensor connectors

fuel rail mounting bose is weakened

plenum mounting bolt hole bosses need to be extended into ports or new ones welded on

injector port angles would also need to be changed

fuel lines connector tube would also need to be changed

plenum would need to be longer requireing differant air cleaner connector on M.A.F. cars


there are also flow changes in both RPM levels and fuel distribution problems that are caused as the runners get shorter and a loss of low rpm torque


after spending $5000, FLOW TESTING and road testing plus DYNO time, SEVEN BASIC PROTOTYPES, PLUS EXTENSIVELY looking into moding the HOLLEY plenum , I can tell you this is far from as easy as it looks at first glance

 

Let's see you build a better looking one that still performs well. Like Grumpy clearly stated, this was a PROTOTYPE that was no doubt designed with only functionality in mind. Now that it works they can worry about making it look pretty.

Do you go around trying to be a ***** or does it just happen by accident?

 

Grumpy,

While it's nice to see someone improving on the (few) flaws of the Stealthram, I'm afraid I can't let you advertise this part for free. If I let you slide without paying, then others in the future will be looking for the same chance and no one will ever want to pay for the advertising. Sorry.