stealth ram on zz4 engine
Thread Starter
Racer
Joined: Nov 2008
Posts: 252
Likes: 0
From: Morehead KY
stealth ram on zz4 engine
Has anybody just thrown a stealth ram on top of stock zz4 crate engine in there car? I have zz4 in 89 6 speed corvette, was looking at possibly changing my intake, which is currently aftermarket edelbrock hi flow tpi runners and intake manifold. Would putting stealth ram on top of zz4 get me same performance as stock lt1 corvette engines? I better heads and cam would be way better but out of question right now, cause of money.
Thread Starter
Racer
Joined: Nov 2008
Posts: 252
Likes: 0
From: Morehead KY
Melting Slicks
Joined: Mar 2002
Posts: 3,108
Likes: 126
From: S.L.C. UT
There are other issues besides getting it to fit under the hood. I am pretty sure you need a smaller distributor, and the fuel lines will need work to convert it to work with a C4.
Guys that have actually done the conversion would be the best source of information. The stealthram should make some nice power though!
Guys that have actually done the conversion would be the best source of information. The stealthram should make some nice power though!
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
Race Director
Joined: Feb 1999
Posts: 12,772
Likes: 17
From: Indianapolis IN
The fuel lines can come in from the front or back, buy you might have to buy some braided fuel line and fittings,,
I think the HSR is a very nice upgrade to an L98, better than the Super Ram, because the HSR is two simple pieces, the HSR needs no porting on a stock, mildly modded engine and even on my 406, I did not port the runners, I only radius-ed the top inlet of the tunnel ram to help smooth out the air flow,,,,,,,,,,plus you still get good TQ and it helps your mid and upper range RPM as well.
One of these days when I get some room to buy a mill I will make a bolt on package.
I think the HSR is a very nice upgrade to an L98, better than the Super Ram, because the HSR is two simple pieces, the HSR needs no porting on a stock, mildly modded engine and even on my 406, I did not port the runners, I only radius-ed the top inlet of the tunnel ram to help smooth out the air flow,,,,,,,,,,plus you still get good TQ and it helps your mid and upper range RPM as well.
One of these days when I get some room to buy a mill I will make a bolt on package.
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Melting Slicks
Joined: Jan 2005
Posts: 2,658
Likes: 4
From: Clifton Park NY
TPI421vette is correct you will need a small cap dizzy (advanced auto $99), You'll also have to route the fuel lines up over the tranny to the back of the intake. Its not a hard job. I would also recommend using Kirban's fuel reg and not holley's reg. I read a number of posts about the reg having problems. My install was much different than the typical, I went from CFI to the Holley. I also have two threads out there with pics about the installation. One is on CF and the other on SV just search CFI to HSR.
LD85 has also a thread somewheres on this forum about making a HSR fit under the stock hood.
I'm happy with the results of the HSR and you will be too. Its very easy to change out injectors and even remove it when you have to..
LD85 has also a thread somewheres on this forum about making a HSR fit under the stock hood.
I'm happy with the results of the HSR and you will be too. Its very easy to change out injectors and even remove it when you have to..
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From: Overland Park Kansas
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Le Mans Master
Joined: Oct 2008
Posts: 9,758
Likes: 49
From: Houston Texas
I know you!!
Do it brother.. you wont be disappointed.
Here is a little info to keep you busy
Holley Stealth Ram,
here is an intake comparison:
http://www.compcams.com/Community/Ar...?ID=1737510521
A few of us have modified it to fit.
It cost about $500 bucks with fuel rail and is a direct bolt on to for L98 and available in a Vortec version for Vortec heads.
You can buy it already done for about $1100 from USM
http://www.usmracer.com/Holley-Steal...on_p_2624.html
Here is a link to mine:
http://forums.corvetteforum.com/c4-t...r-hsr-mod.html
Here is Joby:
http://forums.corvetteforum.com/c4-t...ification.html
Here is LD85:
http://forums.corvetteforum.com/c4-t...ealth-ram.html
Here is qws
http://forums.corvetteforum.com/c4-tech-performance/2469086-cfi-to-hsr.html
Do it brother.. you wont be disappointed.
Here is a little info to keep you busy
Holley Stealth Ram,
here is an intake comparison:
http://www.compcams.com/Community/Ar...?ID=1737510521
A few of us have modified it to fit.
It cost about $500 bucks with fuel rail and is a direct bolt on to for L98 and available in a Vortec version for Vortec heads.
You can buy it already done for about $1100 from USM
http://www.usmracer.com/Holley-Steal...on_p_2624.html
Here is a link to mine:
http://forums.corvetteforum.com/c4-t...r-hsr-mod.html
Here is Joby:
http://forums.corvetteforum.com/c4-t...ification.html
Here is LD85:
http://forums.corvetteforum.com/c4-t...ealth-ram.html
Here is qws
http://forums.corvetteforum.com/c4-tech-performance/2469086-cfi-to-hsr.html
Last edited by ch@0s; Jun 14, 2010 at 12:56 PM.
