Rehashing the Stealth ram debate, specifically for my application
Thread Starter
TGO Supporter
iTrader: (2)
Joined: Jul 1999
Posts: 13,579
Likes: 9
From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Rehashing the Stealth ram debate, specifically for my application
Ok, I just got the shaft on the SLP runners I was going to buy, and I didn't get the accel base yet, so I'm considering going with the stealth ram, although I'll probably wind up waiting all summer for it.
But... I'm running 461 heads, with a hydraulic cam (314/224 .442/.465 112lsa), TRW flat-top slugs, 24lb injectors, headers, blah blah blah.
Obviously my heads aren't all that good, and the hydraulic cam isn't doing me any favors either.
I could do a cam swap, but converting to a roller is beyond my budget. Heads would be down the road.
So anyway... let's say I go with the stealth ram. Am I going to be giving up anything compared to the accel base & slp runner combo? I suspect a fair amount of low end torque will be lost, but I'm trying to figure out if I'll have enough midrange and high end to make up for it. This would be an easier bench-race if the stealth ram had a proven record.
Anyway... what are your thoughts?
But... I'm running 461 heads, with a hydraulic cam (314/224 .442/.465 112lsa), TRW flat-top slugs, 24lb injectors, headers, blah blah blah.
Obviously my heads aren't all that good, and the hydraulic cam isn't doing me any favors either.
I could do a cam swap, but converting to a roller is beyond my budget. Heads would be down the road.
So anyway... let's say I go with the stealth ram. Am I going to be giving up anything compared to the accel base & slp runner combo? I suspect a fair amount of low end torque will be lost, but I'm trying to figure out if I'll have enough midrange and high end to make up for it. This would be an easier bench-race if the stealth ram had a proven record.

Anyway... what are your thoughts?
Thread Starter
TGO Supporter
iTrader: (2)
Joined: Jul 1999
Posts: 13,579
Likes: 9
From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Originally posted by Beefy89
You won't be giving up as much money with the Stealth Ram.
You won't be giving up as much money with the Stealth Ram.
Well I guess the only way to know is to A: Wait for some real numbers to come out for the Steath Ram,or B: Buy one and find out yourself.
But I (like yourself) would guess that one would lose a little low end with the Holley.
But I (like yourself) would guess that one would lose a little low end with the Holley.
Thread Starter
TGO Supporter
iTrader: (2)
Joined: Jul 1999
Posts: 13,579
Likes: 9
From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Right now I'm leaning toward the "Buy one and find out yourself" option. I dunno. If I was smart I'd just buy the accel base, put the damned base and runners on the car, and buy the stealth ram later on. I could always throw the base & runners onto my other car.
Supreme Member
Joined: Jul 1999
Posts: 1,827
Likes: 1
From: Indianapolis, IN
Car: 2000 Trans Am
Engine: LS1
Transmission: T56
Skip the TPI base.
Stealth Ram.
Ring someone's bells and get you one NOW.
If you really want one, you can annoy someone enough to GET one.
Stealth Ram.
Ring someone's bells and get you one NOW.
If you really want one, you can annoy someone enough to GET one.
Member
Joined: Feb 2002
Posts: 243
Likes: 0
Car: 1991 Z28
Engine: 305 TPI under 14 psi
Transmission: aftermarket T56
Axle/Gears: Moser 12 bolt 3.08 gears
Question is will the stealth ram fit under the factory hood? Looks kind of tall from the pics on Holleys' site.
Trending Topics
TPI is no slouch either. Damn thing is huge. And there is still room under the hood. I think the Stealth ram will fit fine under a camaro hood at least since thats what I'm used to. If not its a good excuse to lighten up the front end and get a fiberglass hood.
Thread Starter
TGO Supporter
iTrader: (2)
Joined: Jul 1999
Posts: 13,579
Likes: 9
From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
the stock TPI has a height of around 9.3". The stealth ram is around 10" high. The system itself should have plenty of clearance, but because the throttle body isn't angled down, there's a chance that it could hit. Considering that there's room for strut tower braces to fit between the stock TPI and the hoods, I'm guessing that fitment won't be an issue, but I can't know for sure.
If I do decide to go this route, I'll slap the stock hood back on and check.
If I do decide to go this route, I'll slap the stock hood back on and check.
Thread Starter
TGO Supporter
iTrader: (2)
Joined: Jul 1999
Posts: 13,579
Likes: 9
From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Originally posted by Fastcamaro87
here
i think u should talk to the guy that posted the link above, from the look of it , he made his own stealth ram,
hope this helps
here
i think u should talk to the guy that posted the link above, from the look of it , he made his own stealth ram,
hope this helps
Thread Starter
TGO Supporter
iTrader: (2)
Joined: Jul 1999
Posts: 13,579
Likes: 9
From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
I talked to a holley EFI guy, and this is what he had to say about the stealth ram on my motor:
"I don't think it will be a problem. Might not make the same torque at say 2000 compared to a TPI, but I think it will be fine. The lowest HP engine I dynoed it on was a mild 350 with a similar cam to yours that put out 400 HP and had very good bottom end torque still. With that cam and heads it should make good power to 5500 easy."
I asked him what kind of heads that 400hp motor had but he hasn't gotten back yet. I'm still up on the air over this vs. superram base and SLP runners.
"I don't think it will be a problem. Might not make the same torque at say 2000 compared to a TPI, but I think it will be fine. The lowest HP engine I dynoed it on was a mild 350 with a similar cam to yours that put out 400 HP and had very good bottom end torque still. With that cam and heads it should make good power to 5500 easy."
I asked him what kind of heads that 400hp motor had but he hasn't gotten back yet. I'm still up on the air over this vs. superram base and SLP runners.
Member

Joined: Aug 1999
Posts: 155
Likes: 0
From: SW Ohio
Car: 1989 GTA
Engine: 5.7L
Transmission: 700R4
Axle/Gears: 3.27 BW 9-bolt
The photos I saw looked like there weren't any provisions for EGR. Is the manifold smog legal? I have to go through biannual inspections.
Thread Starter
TGO Supporter
iTrader: (2)
Joined: Jul 1999
Posts: 13,579
Likes: 9
From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
I don't believe it has provisions for EGR, although I'm sure you could rig up an exterior EGR setup similar to how the Corvette is set up.
Joined: Feb 2000
Posts: 1,855
Likes: 13
From: St. Augustine, FL
Car: 89 GTA
Engine: 383
Transmission: 4L80E
Axle/Gears: 12 bolt-3.73
You can always slap on the slp runners with the accel base. I have a superram, and trust me, you aren't missing much.
Try the stealthram, it should be interesting.
I'm going to try an LT1 intake soon myself.
Try the stealthram, it should be interesting.
I'm going to try an LT1 intake soon myself.
Supreme Member
Joined: Sep 1999
Posts: 3,197
Likes: 10
From: Manassas VA
Car: 04 GTO
Engine: LS1
Transmission: M12 T56
Yeah, if i were you i'd just run the stealth ram. Like the holley rep said, it isn't going to lose that much bottom end, again i take everybody back to the carb manifold analogy.
Thread Starter
TGO Supporter
iTrader: (2)
Joined: Jul 1999
Posts: 13,579
Likes: 9
From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Too late. 
I've already made up my mind that I'm going with SLP runners and the accel base. If I get a 91 vette like I'm planning on, I'll move that crap to the Vette and put the stealth ram on the IROC.
Right now I want something simple until I get my other issues in order (transmission, posi, and most importantly, ECM & harness swap). Not that the stealth ram would be overly difficult, but it would require me to modify my fuel lines, get a new distributer and play water-neck games.

I've already made up my mind that I'm going with SLP runners and the accel base. If I get a 91 vette like I'm planning on, I'll move that crap to the Vette and put the stealth ram on the IROC.
Right now I want something simple until I get my other issues in order (transmission, posi, and most importantly, ECM & harness swap). Not that the stealth ram would be overly difficult, but it would require me to modify my fuel lines, get a new distributer and play water-neck games.
Hey, no guts no glory
But I hear you about all those modding headaches. Things never seem to fit the way you want them to. You'll save some cash with the SLP stuff even though the performance won't be like a stealth ram. But its a good idea to get issues resolved before creating more. Maybe the stealth ram will be cheaper when you go for it
But I hear you about all those modding headaches. Things never seem to fit the way you want them to. You'll save some cash with the SLP stuff even though the performance won't be like a stealth ram. But its a good idea to get issues resolved before creating more. Maybe the stealth ram will be cheaper when you go for it
Thread Starter
TGO Supporter
iTrader: (2)
Joined: Jul 1999
Posts: 13,579
Likes: 9
From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
I'm not real sure I want to take a dremmel to a $400 intake just yet. Other than port matching, I think it's going to go on as-is.
But now I'm back to leaning toward the stealth ram
I can't friggin decide.
But now I'm back to leaning toward the stealth ram

I can't friggin decide.
Thread Starter
TGO Supporter
iTrader: (2)
Joined: Jul 1999
Posts: 13,579
Likes: 9
From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Originally posted by Iroc n roll
Stealth Ram, Stealth Ram, Stealth Ram, Stealth Ram. Go for the glory. Be one of the first Thirdgen stealth rammers.
Stealth Ram, Stealth Ram, Stealth Ram, Stealth Ram. Go for the glory. Be one of the first Thirdgen stealth rammers.
I want that stealth ram so damned bad tho.
Supreme Member
Joined: Oct 2001
Posts: 1,392
Likes: 4
From: orlando, fl usa
Car: 1986 pontiac TA
Engine: 360 HSR
Transmission: 700r4 3300 yank converter
Axle/Gears: 3.27 9 bolt
talked with tom at holley today. the intake is 1/4" taller than stock. it is level from front to rear. he said the stock fuel rails might actually work. if not then 9900-172 is the fuel rail kit. comes with fuel rails, regulator, AN fittings for fuel lines, and crossover tube. will need to fab line to connect to stock fuel lines.
Thread Starter
TGO Supporter
iTrader: (2)
Joined: Jul 1999
Posts: 13,579
Likes: 9
From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
The fuel rail part number is 534-185
I've been talking with "Doug F" who happens to be one of the Holley guys that's very closely involved with the stealth ram, and is quite active on various EFI message boards. So far he's been quite a big help.
The stock TPI is 9.375" from top to the block rail, the Stealth Ram is just about 10". Its height might not be much more, but by not angling the throttle body, it will require a LOT more room. There isn't room under a Corvette hood. I'm unsure about an f-body hood, but I'd suspect that it would have a greater chance of fitting under a Camaro hood than a firebird hood.
I've been talking with "Doug F" who happens to be one of the Holley guys that's very closely involved with the stealth ram, and is quite active on various EFI message boards. So far he's been quite a big help.
The stock TPI is 9.375" from top to the block rail, the Stealth Ram is just about 10". Its height might not be much more, but by not angling the throttle body, it will require a LOT more room. There isn't room under a Corvette hood. I'm unsure about an f-body hood, but I'd suspect that it would have a greater chance of fitting under a Camaro hood than a firebird hood.
Supreme Member
Joined: Oct 2001
Posts: 1,392
Likes: 4
From: orlando, fl usa
Car: 1986 pontiac TA
Engine: 360 HSR
Transmission: 700r4 3300 yank converter
Axle/Gears: 3.27 9 bolt
Originally posted by Jim85IROC
The fuel rail part number is 534-185
I've been talking with "Doug F" who happens to be one of the Holley guys that's very closely involved with the stealth ram, and is quite active on various EFI message boards. So far he's been quite a big help.
The stock TPI is 9.375" from top to the block rail, the Stealth Ram is just about 10". Its height might not be much more, but by not angling the throttle body, it will require a LOT more room. There isn't room under a Corvette hood. I'm unsure about an f-body hood, but I'd suspect that it would have a greater chance of fitting under a Camaro hood than a firebird hood.
The fuel rail part number is 534-185
I've been talking with "Doug F" who happens to be one of the Holley guys that's very closely involved with the stealth ram, and is quite active on various EFI message boards. So far he's been quite a big help.
The stock TPI is 9.375" from top to the block rail, the Stealth Ram is just about 10". Its height might not be much more, but by not angling the throttle body, it will require a LOT more room. There isn't room under a Corvette hood. I'm unsure about an f-body hood, but I'd suspect that it would have a greater chance of fitting under a Camaro hood than a firebird hood.
Thread Starter
TGO Supporter
iTrader: (2)
Joined: Jul 1999
Posts: 13,579
Likes: 9
From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
My number came right off the holley site, and was verified by Doug, as well as by a person that already has this system. This part number also works on the Summit site.
Here's the Summit info for your part number:
HLY-9900-172 FUEL RAIL $199.39
Here's the info for mine:
HLY-534-185 ACCESSORY KIT FOR #7540 $173.69
Notice that mine specifies that it's for #7540, which is the manifold part number.
Here's the blurb from Holley's site:
Manifold available separately under P/N 7540 and 7540P.
Fuel rail kit available separately under P/N 534-185.
And a link for it:
http://www.holley.com/HiOctn/WhatsNew/WhatsNew.html
You need to scroll down over 1/2 way to get to the original Stealth Ram section, dated January 22, 2002.
Here's the Summit info for your part number:
HLY-9900-172 FUEL RAIL $199.39
Here's the info for mine:
HLY-534-185 ACCESSORY KIT FOR #7540 $173.69
Notice that mine specifies that it's for #7540, which is the manifold part number.
Here's the blurb from Holley's site:
Manifold available separately under P/N 7540 and 7540P.
Fuel rail kit available separately under P/N 534-185.
And a link for it:
http://www.holley.com/HiOctn/WhatsNew/WhatsNew.html
You need to scroll down over 1/2 way to get to the original Stealth Ram section, dated January 22, 2002.
Senior Member
Joined: Mar 2002
Posts: 591
Likes: 0
From: portland, Maine USA
Car: grand prix/84 z28
Engine: 4.6 Northstar
Transmission: t-56
wondering....
Has anyone seen a EFI system with two different sets of injectors like 24 lb and 36??
So that a person can press a button to activate the 36 lb system for racing or whatever??
thanks,
it is just a thought..
:hail: :hail: :hail:
So that a person can press a button to activate the 36 lb system for racing or whatever??
thanks,
it is just a thought..
:hail: :hail: :hail:
Thread Starter
TGO Supporter
iTrader: (2)
Joined: Jul 1999
Posts: 13,579
Likes: 9
From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Re: wondering....
Originally posted by Trux
Has anyone seen a EFI system with two different sets of injectors like 24 lb and 36??
So that a person can press a button to activate the 36 lb system for racing or whatever??
thanks,
it is just a thought..
:hail: :hail: :hail:
Has anyone seen a EFI system with two different sets of injectors like 24 lb and 36??
So that a person can press a button to activate the 36 lb system for racing or whatever??
thanks,
it is just a thought..
:hail: :hail: :hail:
Does anyone know exactly what is included in p/n 534-185?
Providing I can get my vortec heads set up to work for this- I plan to be a guinea pig. We have needed something like this (ie. cheap that really works good) for 15yrs. I have owned my car for 8 yrs. and I just cannot beleive that something this good has actually come along. I don't know if Holley had us third-gen and fourth gen guys in mind when they built this, but thank *** they use GM compatible parts for their aftermarket EFI setups.:hail:
Providing I can get my vortec heads set up to work for this- I plan to be a guinea pig. We have needed something like this (ie. cheap that really works good) for 15yrs. I have owned my car for 8 yrs. and I just cannot beleive that something this good has actually come along. I don't know if Holley had us third-gen and fourth gen guys in mind when they built this, but thank *** they use GM compatible parts for their aftermarket EFI setups.:hail:
Senior Member
Joined: Mar 2002
Posts: 591
Likes: 0
From: portland, Maine USA
Car: grand prix/84 z28
Engine: 4.6 Northstar
Transmission: t-56
what is p/n 534-185?
I have looked at the holley web site and I don see it =(
can you post a pic of it or something, thanks
:lala: :lala: :lala:
:hail: :hail: :hail:
can you post a pic of it or something, thanks
:lala: :lala: :lala:
:hail: :hail: :hail:
Thread Starter
TGO Supporter
iTrader: (2)
Joined: Jul 1999
Posts: 13,579
Likes: 9
From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Re: what is p/n 534-185?
Originally posted by Trux
I have looked at the holley web site and I don see it =(
can you post a pic of it or something, thanks
:lala: :lala: :lala:
:hail: :hail: :hail:
I have looked at the holley web site and I don see it =(
can you post a pic of it or something, thanks
:lala: :lala: :lala:
:hail: :hail: :hail:
http://www.holley.com/HiOctn/WhatsNew/WhatsNew.html
You need to scroll down over 1/2 way to get to the original Stealth Ram section, dated January 22, 2002.
And a link for it:
http://www.holley.com/HiOctn/WhatsNew/WhatsNew.html
You need to scroll down over 1/2 way to get to the original Stealth Ram section, dated January 22, 2002.
And a link for it:
http://www.holley.com/HiOctn/WhatsNew/WhatsNew.html
You need to scroll down over 1/2 way to get to the original Stealth Ram section, dated January 22, 2002.
And a link for it:
http://www.holley.com/HiOctn/WhatsNew/WhatsNew.html
You need to scroll down over 1/2 way to get to the original Stealth Ram section, dated January 22, 2002.
And a link for it:
http://www.holley.com/HiOctn/WhatsNew/WhatsNew.html
You need to scroll down over 1/2 way to get to the original Stealth Ram section, dated January 22, 2002.
Senior Member
Joined: Mar 2002
Posts: 591
Likes: 0
From: portland, Maine USA
Car: grand prix/84 z28
Engine: 4.6 Northstar
Transmission: t-56
What do you think??
look a these "pimped" EFI systems: http://force-efi.com/price.htm
Thanks for posting the links, I looked on their site and say different part numbers for the stealth ram, thanks.
So what do you think about those EFI systems????
thanks
:hail: :hail: :hail: :hail:
Thanks for posting the links, I looked on their site and say different part numbers for the stealth ram, thanks.
So what do you think about those EFI systems????
thanks
:hail: :hail: :hail: :hail:
Thread Starter
TGO Supporter
iTrader: (2)
Joined: Jul 1999
Posts: 13,579
Likes: 9
From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Re: What do you think??
Originally posted by Trux
look a these "pimped" EFI systems: http://force-efi.com/price.htm
Thanks for posting the links, I looked on their site and say different part numbers for the stealth ram, thanks.
So what do you think about those EFI systems????
thanks
:hail: :hail: :hail: :hail:
look a these "pimped" EFI systems: http://force-efi.com/price.htm
Thanks for posting the links, I looked on their site and say different part numbers for the stealth ram, thanks.
So what do you think about those EFI systems????
thanks
:hail: :hail: :hail: :hail:
Senior Member
Joined: Mar 2002
Posts: 591
Likes: 0
From: portland, Maine USA
Car: grand prix/84 z28
Engine: 4.6 Northstar
Transmission: t-56
Um.. ok
I looked here at the stealth ram at first. This is a link from holley web site, http://www.nosnitrous.com/HiOctn/Pro...FMS/SR/SR.html
Thread Starter
TGO Supporter
iTrader: (2)
Joined: Jul 1999
Posts: 13,579
Likes: 9
From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Those part numbers are all for complete EFI kits that include the whole enchalada, including the throttle body, injectors, harness, ECM, etc. Those are big bucks ($2700+)
I'm talking about just the manifold & plenum, and the fuel rails. That's the minimum you need to have in order to reuse all of your old crap.
I'm talking about just the manifold & plenum, and the fuel rails. That's the minimum you need to have in order to reuse all of your old crap.
Senior Member
Joined: Mar 2002
Posts: 591
Likes: 0
From: portland, Maine USA
Car: grand prix/84 z28
Engine: 4.6 Northstar
Transmission: t-56
oh, ok =)
I would ned one of those kits, I am runing a carb
It has some great power but my mpg is under 10.
thanks:hail: :hail: :hail:
It has some great power but my mpg is under 10.
thanks:hail: :hail: :hail:
Thread
Thread Starter
Forum
Replies
Last Post
MrPackstin
Interior Parts for Sale
11
Oct 25, 2017 08:09 PM
Vintageracer
Interior Parts for Sale
12
Sep 24, 2017 12:34 PM





