I just got the new issue of GM High Tech performance and they have a tech article about installing a Holley Stealth Ram on an 86 Iroc. Well, they state that it basically bolts right in place and show a price break down of a base kit for only $655!!! THis base kit is the manifold, plenum, fuel rails, and lots of fittings and some hose to plumb the whole thing, and gaskets. How can this be right? Has anyone else read this yet?

I have been considering the MiniRam, but if the stealth ram is just as good and for so much less money, I want one!

Let me know what you think of the Stealth Ram and the Mini Ram so I can compare the two.

 

Stealthram discussion has been all the rage here. There used to be a big FAQ thread about it stuck at the top of this forum... Here's the link now: https://www.thirdgen.org/techbb2/sho...ht=stealth+ram Dyno numbers on a stock 92 350 TPI in that thread too.

www.thunderracing.com sells the Steathram for about that price you listed. $279.99 for the base, and plenum, and $218.59 for the fuel rail with adjustable FPR. That's $500, figure in the extras to get it all installed and it is damn affordable, especially compared to the miniram... Do a search and you'll find a few other posts from people who have it. I believe someone had some 383 AFR headed stealth ram with dynos too with a thread about it, can't remember so search...

Haven't seen that article you mentioned yet. What kind of power results did they get for the swap? What all was the setup on the whole motor? Don't have a scanner by any chance do you, would love to see it? If they ever offer a Stealthram for Vortecs anytime soon I'm definitely swapping it on my car, and I'm toying with the idea of picking up another thirdgen to build up the motor and throw a regular one on anyway...

 

THe article I mentioned is a two parter. THis part covered the introduction to the parts and the installation. THe car used had some popular mods in place and ran in the 13s. THe next part will have dyno and return track performance numbers. I was very impressed with the details about the installation, seemed like a straight bolt on swap. And for that price, it may just suit my needs!!

 

if this car in the article is a stock 86 motor then it would be a 305, or did they say someone swapped in a 350 ? id be very interested to see how a 305 would do with a stealth ram.

 

All right gentlemen, I have the mag in front of me now. THey claim it is a 1986 z28 IROC. Engine is 350, Trick Flow heads, comp cam 218/228, SVO 24# injectors, 88 350 prom, header, TH-350 w/ 10 in converter, and posi rear. This comes straight from the vehicle info in the article. THis is the May 2003 issue of GM High Tech Performance.[I]

I am curious to see what they gained from the swap. Before swap runs with the car they claimed 13.0/12.9 second ets. I did some searching on the subject and am pretty sure this is going to be for me. Thanks for the replies.

 

that sounds like exactly what i want to do. any more specs on that cam?

actually, maybe i'll just pick up the magazine. which month is it?

 

It's in the May 2003.

It's a custom grind hydraulic flat tappet Comp cam. You could expect very similar results using the XE262H-10 (218/224 - .493/.501 -110 spread) or the 4X4 series X4262H (218/226 - .493/.512 - 111 spread)

 

seems kinda early for may, do you mean march, or is the magazine way ahead of itself?

 

I have a subscription so maybe I get it before the stores do but it is MAY 2003. Check it out.

 

The HSR has alot of the same dynamics
of the MiniRam, so I don't think you'll see
veryt good results with either on a 305.

Not that it can't be done, but most 305s would
loose power with the HSR or MR..

(I still haven't received my May issue of
GMHTP? Maybe the mid-Atlantic snow has
them all delayed?)

mike

 

Hmm, that is almost identical to the setup I've been thinking about getting another 3rdgen to build a HSR engine up for. The TFS heads, that range cam, and the HSR. Darn, need to get that magazine and the follow up I guess.

Did the car have all stock TPI stuff on it or did it have some upgrades to start with for the 13.0 baseline, surely it wasn't the stock TPI? Did they dyno the car like this, or only run the 1/4?

 

Let me see here, where is my mag...OK here it is from the "Vehicle Data File":
86 Z-28 IROC
355 cid
9.8:1 CR
forged pistons
GM crank turned 10/10
GM 5.7 rods
TF G1 Twisted Wedge
Comp Cam 218/228-.486/.501-110*spread
Crane steel 1.6 rockers
Ported stock intake
Ported SLP runners
Ported plenum
BBK 52mm TB
Ported stock MAF
#24 svo injectors
Stock fuel pump
HEI w/MSD coil, Accel wires, and Rapid Fire plugs
Stock ECM-88 350 chip
Hedman shorty headers
Dynomax 3" Race series muffler, custom 2.25" Y pipe
TH-350
TCI 10" street fighter TC
Stock front suspension w/sway bar
GM 7 5/8 Rear w/3.23 gears, Auburn posi, alum. support cover
Weld Pro Stars, 15x4, 15x10
M/T Front Runners, 26x11.5 ET Streets
3520 lbs. w/driver

THere it is all the specs BEFORE the HSR. I hope I don't get in trouble for plagurizing a magazine!!

 

well i picked this mag up at WAl-Mart earlyer this weak and something i notised right off hand was the part number it gave 7450 i got a HSR but its number 7540 so was it a typo or was it a diffrent release

 

Thunder Racing has PN 7540 so it must be a typo.

 

Yep, it's a typo.

 

What is the CFM capacity of the HSR? I am seriously considering looking for someone out here I can "convince" to "assist" me in the passing of yearly emissions testing soley because I wish to top off my future 383 with the HSR. Just wondering tho - I heard the TPI stock intake is something like 650CFM or around that. What's the HSR?

 

That is a good question. I think only Holley or someone with an airflow test machine can answer that.

 

300cfm per runner. I believe it said that in the article. It also says that in some of the 200 posts available with the search feature.

 

Ouch! Thank you though, appreciated. So, how many runners? Lol.

 

It is for an 8 cylinder engine so there better be 8 runners. Thats 2400cfm of air. THats a lot of air volume.