grumpyvette

http://www.chevytalk.org/forums/Foru...ML/000534.html
now remember this is PURE bone stock add a cam and headers, etc and the extra AIR/FUEL flow CFM of that STEALTH RAM will easily get you 100hp+ over a TPI intake with the same parts, got questions TALK TO DOUG,(one of HOLLEYS ENGINEERS ON THAT PROJECT) over at CHEVYTALK.COM tell him GRUMPYVETTE TOLD YOU TO ASK HIM, this intake is way better than most thats obvious, think how lousy a tunnel ram would work on a pure stock engine, the STEALTH RAM MADE 63 more hp on a stock engine at only 5200rpm, the power probably is well over 100hp more at 6000rpm! think about it!
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torque x rpm /5252=hp sooooo! he lost 9.7 ft lbs of torque at 3400rpm and gained 63.63 ft lbs at 5200rpm, in effect he gained torque and hp from 4400rpm and up and the worst he did was loose 9.7 ft lbs at 3200rpm

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[Modified by grumpyvette, 10:42 PM 4/18/2002]


[Modified by grumpyvette, 2:09 AM 4/20/2002]


[Modified by grumpyvette, 2:41 AM 4/20/2002]

scorp508

So it is a mix between the superram and miniram. Power from 4000 +

MrJay

I want that on my car........ :sad:

That is cool just from a intake 63hp and a TB I wonder what was the tq?

Jay




[Modified by MrJay, 4:28 PM 4/18/2002]

LPDesRoche

The only problem is it still doesn't fit under the C4 hood....But sounds like a good reason to get a cowl hood....

scorp508

Lee, any #s on what your 90 w/SR alone did for HP? Between heads, cam, intake, exhaust I'm looking to add roughly 140-160hp to my car. So it's got to be a pretty darn good chunk of that.

LPDesRoche

I never made it to the dyno when I just had the super ram, we didn't have one local then. Of course we do now, and my good friend owns it. Always the case.

But I went from running 13.7 @101 consistently to 13.20 @107 consistently. It ran completely different, power band came up about 500 rpms, felt better at all points in the power band. And then came the 383....... :D

65Z01

Scorp are you going to get some dyno pulls after brake-in and a few passes at the strip?

scorp508

Most definiely. I want to get a dyno with A/F in to know where I am tune-wise.

Jim85IROC

imagine what that thing could do with a PROM that knows what's going on.

Dr. Evil

OK so how much was it again and where do I get one?

GlockLT4

WOW... I didn't realise how early HP dropped off on that engine! :eek: :eek:

The Dingo

Scorp, I'm waiting for my SR upper (already have lower section installed). If I can get time, I might dyno my car with it's stock bottom end before and after to see what gains there are and where they might occur. I'll post the results here if/when I do this.

Lee, after reading your thread and remembering your gains with the SR, I'm anxious to get my SR upper now. If I can get 13.5 ET's (or better?) with stock heads, cam, and bottom end I will be one happy camper (current best is 13.7@100mph before SR lower and cat back exhaust was installed). Fingers are crossed. :D

Dr. Evil

OK guys. I spent an hour on hold with Holley trying to get some info on pricing and availability. No luck. I did find the part numbers on hollets website and called advance auto to try to get some pricing. They are saying $852 for the intake, $252 for the fuel rails :confused:
I thought this thing was supposed to be priced significantly lower than the SR or mini ram.for over $1100 I'm not very interested.

dgoodhue

63 hp is a little misleading, we are talking about 2 different hp ranges. (TPIS does this with the MR also and its 95hp gain) The peak hp numbers are +26 hp for Stealth Ram. (214 @4600 vs 240 @4800)

Vic'89

The miniram can make HP seems much more also, but at about 6000rpm.

The TPI's range is from idle to 5000 rpm. That is what we should compare.

Vic

grumpyvette

quote:
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63 hp is a little misleading, we are talking about 2 different hp ranges. (TPIS does this with the MR also and its 95hp gain) The peak hp numbers are +26 hp for Stealth Ram. (214 @4600 vs 240 @4800)
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The miniram can make HP seems much more also, but at about 6000rpm.
The TPI's range is from idle to 5000 rpm. That is what we should compare.

WRONG just because the TPI drops off a cliff flow wise at about 4700rpm is no reason to grade and limit performance on the STEALTH RAM by that RPM range, you ALWAYS measure a engines PERFORMANCE from idle up to the engines redline, measureing the STEALTH RAM by the CHEVY TPI rpm range is like measureing olympic track runners by the standards of an office party 3 legged race results run by drunks, look the only realistic way to look at things is whats the power curve from idle to redline! if you want to measure all engine torque curves that way I guess we will need to put rev limiters on every engine to limit them to 4700rpm. if the STEALTH RAM allows the engine to make power over an ADDITIONAL 1800rpm-2200rpm then you MUST MEASURE/COMPARE THE TORQUE CURVE OF BOTH INTAKES TO THE EXTREMES IN RPMS that BOTH intakes run in, in this case thats going to mean that at 1000rpm the stealth ram is going to be at a DISADVANTAGE JUST LIKE the TPI intake will BE AT A DISADVANTAGE at 6500RPM if you take the rpm/hp/torque over 1000rpm-6500rpm then you get a true picture of both intake system system power curves!

(around 6500rpm is where stock valve float is likely to limit hydrolic cam rpm) :nono:





[Modified by grumpyvette, 2:10 AM 4/20/2002]

dgoodhue

I don't disagree each engine should be tested from idle to redline. I think it is misleading to compare each engine at the same point of the rpm curve, when the intake have different rpm curves, Peak number and hp/tq curves can be compared but not at the same rpm points. Just don't say it will make 63hp more, I would never rev a stock TPI to 5200 rpm.

Doug Flynn

Hey guys,
Just wanted to pass some info.

The price at Summit for the lower and upper (unpolished) is 279.99 (7540)
The fuel rail kit which you need is 173.69 from Summit (534-185) Less than $500 total.

The results given are from the chassis dyno. A 1-2-3 gear pull (700R4) was done. The lowest rpm given was from the gear shift on (that is what it dropped to on the shift recovery). The 1st gear numbers were the same as the stock TPI (from a dead roll), but with converter, etc, I question that. If I had a 5 sp car I would pull from 1000 RPM. I posted what we had, not trying to hide anything.

This intake is not designed for someone that shifts at 4000 RPM and likes torque at 1400 RPM. If that is what you want, keep the stock TPI intake as that is what it is designed for.

Hope that helps.


[Modified by Doug Flynn, 10:06 AM 4/20/2002]

grumpyvette

Here's a list of parts we used.
-Used a 85 Camaro Carbureted upper radiator hose (Dayco 71028) (trimmed the ends back)
- Use a std. small block Chevy waterneck (Mr. Gasket PN 2661)
-Two 1/4" x 1/8"NPT straight barb fittings (rear of intake, MAP sensor and other items, I run only one line to MAP)
-One 3/8" x 3/8" NPT straight barb fitting (rear of intake other vacuum items)
-One 3/8" x 3/8" NPT 90 deg. barb (goes under plenum, used for brake booster)
- 2 feet 1/4" vacuum hose
- 2 feet 3/8" vacuum hose
- (1) 5/16" compression fitting to -6 male AN
- (1) 3/8" compression fitting to -6 male AN
- (2) 3-1/2 foot -6 line with female hose ends. Goes from inlet and outlet to fuel stock fuel lines which are cut from underneath car, the two compression fittings are installed on the stock fuel line.
- (3) 1/4" vacuum plugs for EGR solenoid and throttle body
- (1) large clamp

All the vacuum ports are machined into the plenum. The current lowers don't have the late style center bolts machined, but I am getting future ones machined correctly to fit both. Can't say when for sure. Used the stock air inlet.

You lose EGR and we didn't hook the coolant to the throttle body. Need to use the small cap GM HEI. Coil mounted with stock bracket in stock location.

Didn't have to modify any wiring.

grumpyvette

dgoodhue QUOTE
"I don't disagree each engine should be tested from idle to redline. I think it is misleading to compare each engine at the same point of the rpm curve, when the intake have different rpm curves, Peak number and hp/tq curves can be compared but not at the same rpm points. Just don't say it will make 63hp more, I would never rev a stock TPI to 5200 rpm."

the stock chevy 350 engine will easily rev to the 6000rpm or slightly higher with any decent 4-barrel carb intake or the MINI RAM or the STEALTH RAM, while I agree that the TPI has an outstanding torque curve in the 1000-4000rpm range that only the lower 2/3rds of the engines reasonable operateing range while used in a high performance application and since increaseing or moving the peak of the torque curve higher by allowing the engine to breath better (HELL THE TPI STRANGLES THE DAMN ENGINE AFTER 4500rpm) while GREATLY INCREASING THE HP AVAILABLE is the goal in almost all high performance mods, look at it this way, everything you do to an engine like porting the heads,porting the intake,bigger cams,headers,bigger throttle bodies,ETC is designed to get more air/fuel mix into the cylinders to be burnt and the more efficiently filled cylinders produceing power strokes per minute the higher the torque curve can be moved, and because (tq x rpm/5252=hp)moveing that torque curve higher means much more useable hp.look at this, http://www.c4board.com/cgi-bin/ib3/i...&f=10&t=80&st=

what I showing you here is that the TPI INTAKE is a MAJOR restriction in your engines quest to make power, THE STEALTH RAM, with its far better air flow removes that RESTRICTION!!!
and BEFORE YOU ASK no I don,t work for HOLLEY or anyone else ,Im just a retired ENGINEER trying to show you guys HOW and WHY things work[/b]
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[Modified by grumpyvette, 6:46 PM 4/20/2002]