Has anyone had / have this system on their C4?
Stealth Ram MPFI System, 24 lb/hr Injectors,300-385 HP Range
Polished Finish. What is the performance difference over the stock TPI
intake. I was told I needed to remove the restrictive intake system looked at the SR and while the performance comments are good, my understanding it is a nightmare to avoid gasket leaking.

All comments welcome

 

Getting read to install, HSR build (see pics), this is the HSR that fits under a stock c4 hood, no mods required..

 

Where did you get that plenum, or did you fab it yourself? Also, doesn't the HSR require swapping out distributors to the small type with external coil?

 

Plenum custom made....yes, if you look you'll see the small dist, setup with msd and coil

 

www.stealthram.com for info

http://www.eecis.udel.edu/~davis/z28/winter01/
dyno/dyno021105/webpage021105.html

http://www.thirdgen.org/techboard/al...gal-whats.html
?highlight=vette+stealth+ram

 

You know,,, you can run your fuel lines into the front and move the hard metal cross-over line to the rear!?

It all fits like that

 

Gorgeous setup!!

 

Duh,,,, I never though of that... great idea... thanks, guess the only thing is to remake the braided fuel lines... i'm getting better at that too...
thanks for the tip, i'll work on it ....
thanks
vinnie

 

Will this fit under a '90 C4 hood without modifications as I have vortec
heads on the 350?
Jegs link part #510-91603201

http://www.jegs.com/webapp/wcs/store...51443_-1_10299

Thanks for all the help

 

No, no without modifications

 

What modifications would be required, hood, intake?

 

Simplest option #1 = buying the fabbed plenum like Vinnies @ $ 300 for the plenum
Option # 2 = JOBY's = cost of welding and grinding
Option # 3 = new hi-rise Hood = $1300
Option # 4 = what I did, you provide the plneum I machine it= $500

http://forums.corvetteforum.com/show...post1556252448

 

What's the hp difference in this and the accel superram setup?

 

I hope to hit the dyno for the first time time before the end of June, my motor is out of the car right now.

 

LD: you said a mouth full... oh yea, i moved the crossover tube to the back, fit like a charm... now just have to remake the fuel lines, but great thing is that they are short and nothing near the injectors... thanks again for the suggestion....

 

No problem, CF needs a sticky regarding the MR, SR and HSR for sure.

 

That is one SWEEET setup. hopefully some day mine can look half that good.

 

OK Vinnie, Sorry if I missed this before but..

Who made your plenum?

 

I think that beats my RPM AIR GAP and 750 CFM Demon

 

It may have been a DIY kit or RTR item fabricated by Frank at Fuel Injector Clinic.

To the best of my knowledge, GrumpyVette preceeded others with the
creation of a modified HSR plenum for fitment under a stock C4 hood.
The modified plenum was a source of many heated threads beginnning
in '03. Those archived threads are available for review through the
use of the CF Advanced Search feature.

Keep in mind that Option #3 (new hood) does not include shipping
or the cost to prep and paint the new hood. My vote is that changing
the hood would lead to two or more thousand dollars being spent.

Read LD85's thread in the link above and follow along as he fabricates
his version of the plenum. My vote is that appearance of the final
product speaks for itself.

To the best of my knowledge, Holley/Weiand only sells the Stealth Ram
as a package consisting of the base & plenum, AFAIK, the base is not
sold separately. Therefore, might as well make use of the included
plenum rather than have it collecting dust on a shelf.

If a vendor modified the thermostat housing as part of a plenum
package, it looks like an interested party starting with an OEM TPI
would need the following to swap to an HSR:

- an HSR intake and the HSR fuel rails
- work to modify the plenum and thermostat housing
- small dist & remote coil
- suitable injectors (=> 24# rating)
- fittings

A discussion of miscellaneous HSR considerations occured in a post
in this thread (ignore the Super Ram title of the thread). In addition
to part numbers for conventional heads, the intake p/n#'s for Vortec
heads is also listed.

With part numbers from the links provided, a budget for the swap can
be compiled by doing a little research at forum supporter Jegs or your
favorite performance parts supplier.

.