C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

which runners are longer stealth ram or mini ram

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Old Jun 25, 2007 | 11:26 PM
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Default which runners are longer stealth ram or mini ram

hello vetters,
i was just wandering please which out of the two intakes,stealth ram and mini ram has the longer runners please?
which out of the two would give you more of a all round rev range /torque please?, or may be non of the two i guess?
the reason being is i have a super ram that im not happy with as far as all the pieces to it when installing/uninstalling it.
it is a real pain in the bum to install and the intake leaks you get some time.
i do like very much the idea of the one piece type intake though.
and i was looking at possibly selling the super ram and converting a stealth ram or getting a mini ram.
but from what i have heard both these intakes are really only good for higher rpm range which isnt really much good for street cruising.
plus i dont like the idea of having to rev the nut out of each time to get that power coming on.
i have a 6 speed with a l98 engine .
any ideas please.
regards
shae
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Old Jun 25, 2007 | 11:32 PM
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StealthRam has the longer runners, its more intermediate between SR and MR in terms of powerband.

Given the right setup, with cam choice and gearing, either would work for you.
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Old Jun 25, 2007 | 11:38 PM
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the stealth ram has longer runners. Since you have the super ram, take your time and install it correctly, or it will be a waste of time.

I am not a super ram fan due to the complexity of the system.

And FYI, with a miniram you will not loose power, especially on the street, with the miniram intake. Do you think LT1's are slow? No htey are faster than the L98 and its "basically" the same motor, less the intake.
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Old Jun 25, 2007 | 11:47 PM
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http://stealthram.com/flowcomparison.html

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Old Jun 25, 2007 | 11:55 PM
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hello there fellas,
thanks for your guidence on this matter.
i really like the idea of the mini ram that you just bolt the sucker on with no mods or other accesories.
but my main concern is it not kicking in power wise until quite late on in the rev range and for the street work im not going to get much use or performance out of it.
will i still get some flat torque all the way thru out of the mini ram?
also with the mini ram would i need to fit at least a 3.73 or 4.10 rear gears to help with some torque factor?
so would would be better stealth ram or mini ram?
im sorry for all these questions and i know this topic has been discusedd so many thousands of times that it is getting boring for some of you.
regards
shae
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Old Jun 26, 2007 | 01:00 AM
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As for which is "better", thats all a matter of powerband preference.

MR would have a fairly flat torque curve, whereas TPI, SR and HSR would be more peaky in comparison.

It would need gears with an MR to improve the low-end "feel" of the car.
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Old Jun 26, 2007 | 06:50 AM
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thank you vader86 for your help and info.
so would adding 4.10 rear gears help alot with mini ram then please to give some more low end-mid range feel ?
my comp cam hydraulic roller cam kicks in @ 1,800 rpm and is apparently good for up to 5,800 rpm.
duration @ .50" is 218 int,224 exh, with gross lift using 1.6 ratio roller rockers is .570 int, .565 exh
duration @ .006 tappet lift is 268 intake, 276 exh
lobe seperation is 113 degrees
will this cam still be ok to use with the mini ram ?
regards
shae
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Old Jun 26, 2007 | 07:31 AM
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Originally Posted by emo-vet
thank you vader86 for your help and info.
so would adding 4.10 rear gears help alot with mini ram then please to give some more low end-mid range feel ?
my comp cam hydraulic roller cam kicks in @ 1,800 rpm and is apparently good for up to 5,800 rpm.
duration @ .50" is 218 int,224 exh, with gross lift using 1.6 ratio roller rockers is .570 int, .565 exh
duration @ .006 tappet lift is 268 intake, 276 exh
lobe seperation is 113 degrees
will this cam still be ok to use with the mini ram ?
regards
shae
I think your total lift numbers are reversed. If this is a street car the MR with 3.73 gears should be good overall. It should be O K with that cam and make good overall power.
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Old Jun 26, 2007 | 02:04 PM
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im through....this whole miniram looses low end power for the street, etc, just pisses me off. Especially from those who have never used the intake.

LT1's ARE NOT SLOW CARS THAT LOOSE LOW END TORQUE.

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Old Jun 26, 2007 | 04:55 PM
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Originally Posted by pushrod-v8
im through....this whole miniram looses low end power for the street, etc, just pisses me off. Especially from those who have never used the intake.

LT1's ARE NOT SLOW CARS THAT LOOSE LOW END TORQUE.

So why did GM go to a longer intake runner on the LS1 ? I've used all 3 intakes. Compared to a Super Ram, a Mini ram / short runner intake will loose peak torque when compared side to side. It'll also be lower than a StealthRam. If you're worried only about torque, the real question is why'd you get rid of the long runner TPI ? The torque curve is plateau flat on the short runner intake because there is no intake ram effect taking place. Gear it properly with the right convertor and it'll run great. Ultimately, in a max effort performance setting both the Miniram and the StealthRam will out run the SuperRam. But it's going to take rpms to do it. I'll also say that I'd put my money on the Stealth Ram in a full on max effort setup. Any of the three will work fine for the typical Corvette owner. The Miniram or StealthRam getting nods over the SuperRam for simplicity. I'll end though, saying that I've got a SuperRam for a personal 350 daily driver build.
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Old Jun 26, 2007 | 06:47 PM
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Actually, the LT1/Mini Ram 3" runner manifolds lose power to the Super Ram until 5K RPM, where they win out above that.

Depending on how much power you're making that might be an issue or not, but for relatively mildly cammed 350 - 383 under 6K RPM street engines the Super Ram is the best choice IMO.

Now, BBK says that it's coming out with an easy to install 14" runner SR type manifold for $400 list, that accepts all the factory stuff (TB and EGR etc)!

This is about the same runner length as the LSx manifolds, can't wait...

http://forums.corvetteforum.com/show...1730877&page=1

Doug

Originally Posted by SloRvette
So why did GM go to a longer intake runner on the LS1 ? I've used all 3 intakes. Compared to a Super Ram, a Mini ram / short runner intake will loose peak torque when compared side to side. It'll also be lower than a StealthRam. If you're worried only about torque, the real question is why'd you get rid of the long runner TPI ? The torque curve is plateau flat on the short runner intake because there is no intake ram effect taking place. Gear it properly with the right convertor and it'll run great. Ultimately, in a max effort performance setting both the Miniram and the StealthRam will out run the SuperRam. But it's going to take rpms to do it. I'll also say that I'd put my money on the Stealth Ram in a full on max effort setup. Any of the three will work fine for the typical Corvette owner. The Miniram or StealthRam getting nods over the SuperRam for simplicity. I'll end though, saying that I've got a SuperRam for a personal 350 daily driver build.
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Old Jun 26, 2007 | 06:48 PM
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hello there fellas.
thank you for your replys and info.
so may be then the converted/modified stealth ram with say 3.73 gears could be the way to go then for good all round performance?
sorry doug you beat me too it, i didnt see your post then until now.
regards
shae

Last edited by emo-vet; Jun 26, 2007 at 06:52 PM.
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Old Jun 26, 2007 | 08:15 PM
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Originally Posted by emo-vet
thank you vader86 for your help and info.
so would adding 4.10 rear gears help alot with mini ram then please to give some more low end-mid range feel ?
my comp cam hydraulic roller cam kicks in @ 1,800 rpm and is apparently good for up to 5,800 rpm.
duration @ .50" is 218 int,224 exh, with gross lift using 1.6 ratio roller rockers is .570 int, .565 exh
duration @ .006 tappet lift is 268 intake, 276 exh
lobe seperation is 113 degrees
will this cam still be ok to use with the mini ram ?
regards
shae
4.10s would make it feel quicker and more powerful, compared to a high geared stock car.

That camshaft would be just fine for MR/LT1 intake use.
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Old Jun 26, 2007 | 10:36 PM
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Originally Posted by emo-vet
hello there fellas.
thank you for your replys and info.
so may be then the converted/modified stealth ram with say 3.73 gears could be the way to go then for good all round performance?
sorry doug you beat me too it, i didnt see your post then until now.
regards
shae

Are you heads stock yet? The cam is along the right lines but hooked up to a stock set of heads is kinda a deal killer.

P.S. That cam you listed would be fine with a Mini.

Last edited by hippy; Jun 26, 2007 at 10:40 PM.
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Old Jun 26, 2007 | 10:46 PM
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Originally Posted by SloRvette
So why did GM go to a longer intake runner on the LS1 ? I've used all 3 intakes. Compared to a Super Ram, a Mini ram / short runner intake will loose peak torque when compared side to side. It'll also be lower than a StealthRam. If you're worried only about torque, the real question is why'd you get rid of the long runner TPI ? The torque curve is plateau flat on the short runner intake because there is no intake ram effect taking place. Gear it properly with the right convertor and it'll run great. Ultimately, in a max effort performance setting both the Miniram and the StealthRam will out run the SuperRam. But it's going to take rpms to do it. I'll also say that I'd put my money on the Stealth Ram in a full on max effort setup. Any of the three will work fine for the typical Corvette owner. The Miniram or StealthRam getting nods over the SuperRam for simplicity. I'll end though, saying that I've got a SuperRam for a personal 350 daily driver build.
To answer your first question I'll guess a space constriction. I could be wrong but a LS1 doesn't have a whole lot more of butt kicking low rpm torque. I can't argue with you on what else you've posted, I think it's pretty close to being on especially after your sentence that starts with the word Gear.

Last edited by hippy; Jun 26, 2007 at 10:48 PM. Reason: NOPE, the smart stuff started after the word GEAR.
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Old Jun 26, 2007 | 10:50 PM
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Originally Posted by doug_dayson

but for relatively mildly cammed 350 under 6K RPM street engines the Super Ram is the best choice IMO.

I agreee on the 350. Not a 383 I think that motor needs more air than a SR.

Originally Posted by doug_dayson

Now, BBK says that it's coming out with an easy to install 14" runner SR type manifold for $400 list, that accepts all the factory stuff (TB and EGR etc)!

This is about the same runner length as the LSx manifolds, can't wait...

http://forums.corvetteforum.com/show...1730877&page=1

Doug
14", are you sure about the LS being that length? Seems long to me.
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Old Jun 27, 2007 | 01:40 AM
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hello vader86 and hippy.
thank you for the advice!
regards
shae
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Old Jun 27, 2007 | 01:54 AM
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The LT1 dyno curves I've seen don't give up anything down low to the TPI. So why would the miniram?

People assume torque has everything to do with the length of the runners, and it doesn't.
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Old Jun 27, 2007 | 07:06 AM
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Originally Posted by SloRvette
So why did GM go to a longer intake runner on the LS1 ? I've used all 3 intakes. Compared to a Super Ram, a Mini ram / short runner intake will loose peak torque when compared side to side.
Look at the cam specs on the LS1's. All about peak pressure, no overlap. That with a LTR setup will build more torque down load, AND also give you a little more revs than a tuned port setup due to the port shape of the LSx manifold. It's like the best of both worlds, with a motor that was GROUND UP DESIGNED that way.

Apples and oranges my friend! My CC306 cam in the miniram or LT1 is perfect, but would fall on it's face with a SR or TPI, same could be said about other cams with the miniram.

However, the argument of switching to a miniram and 'losing torque' is dumb in itself. (not saying you are promoting it, i'm speaking generally).

-- Joe
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