Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

What is the most power possible out of a 346 Hyd. cammed engine?

Thread Tools
 
Search this Thread
 
Old 03-28-2003, 11:34 AM
  #1  
TECH Junkie
Thread Starter
iTrader: (24)
 
SPANKY LS1's Avatar
 
Join Date: Nov 2001
Location: Chicago, IL
Posts: 3,489
Likes: 0
Received 1 Like on 1 Post

Default What is the most power possible out of a 346 Hyd. cammed engine?

Assume a forged shortblock, LS6 heads, LS6 intake, full boltons, headers, x-pipe, dual exhaust, etc? I would think with ~11-11.5 to 1 compression, and a big (24x-24x .6XX lift cam), 500RWHP would be possible? What is the linit on a 346" NA engine? Just curious.....
Old 03-28-2003, 11:36 AM
  #2  
TECH Apprentice
iTrader: (1)
 
MastaAce98's Avatar
 
Join Date: Nov 2001
Posts: 362
Likes: 0
Received 0 Likes on 0 Posts

Default Re: What is the most power possible out of a 346 Hyd. cammed engine?

Are you planning on going solid roller?
Old 03-28-2003, 11:39 AM
  #3  
TECH Junkie
Thread Starter
iTrader: (24)
 
SPANKY LS1's Avatar
 
Join Date: Nov 2001
Location: Chicago, IL
Posts: 3,489
Likes: 0
Received 1 Like on 1 Post

Default Re: What is the most power possible out of a 346 Hyd. cammed engine?

No, hydraulic cams only. Solid roller stuff is too rich for my blood. <img border="0" title="" alt="[Frown]" src="gr_sad.gif" />
Old 03-28-2003, 11:56 AM
  #4  
TECH Apprentice
iTrader: (1)
 
MastaAce98's Avatar
 
Join Date: Nov 2001
Posts: 362
Likes: 0
Received 0 Likes on 0 Posts

Default Re: What is the most power possible out of a 346 Hyd. cammed engine?

Well.... realistically on the type of setup that you're talking about, 500rwhp is a pretty high goal to set.

I think you're probably looking at about 440rwhp as the "limit" of what that type of setup can offer you. Now, if you wanted to go solid roller and rev to say, 8000rpm or higher then yeah I could see you making 500rwhp with the right type of cam.
Old 03-28-2003, 01:23 PM
  #5  
LS1Tech Co-Founder
iTrader: (34)
 
Pro Stock John's Avatar
 
Join Date: Nov 2001
Location: Chicago, IL
Posts: 44,651
Received 1,096 Likes on 720 Posts

Default Re: What is the most power possible out of a 346 Hyd. cammed engine?

I don't think 500rwhp is possible with those limitations.

I think a SR + good intake and some rpms could get there but the peak hp would be over 7000rpms.
Old 03-28-2003, 02:54 PM
  #6  
TECH Senior Member
iTrader: (1)
 
Camaroholic's Avatar
 
Join Date: Nov 2001
Location: Waco, TX
Posts: 6,449
Likes: 0
Received 0 Likes on 0 Posts

Default Re: What is the most power possible out of a 346 Hyd. cammed engine?

Well, we've seen ~460ish on a stock bottom end out of LG, through the muffler, with his LS6 head / G5-X2 package. Throw in some dyno tricks <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> and you might get close, but it'll definitely be tough.

Didn't Cartek do in that same ballpark? ~460-470?

I know that Thunder is working on a couple solid roller versions of this motor (forged / LS6 / big cam). <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

-Andrew
Old 03-28-2003, 03:17 PM
  #7  
On The Tree
 
HP-GURU's Avatar
 
Join Date: Jan 2002
Location: Carrollton, TX
Posts: 164
Likes: 0
Received 0 Likes on 0 Posts
Default Re: What is the most power possible out of a 346 Hyd. cammed engine?

Tell me, why is an extra 40rwhp going to cost
1000-1500 more RPM.

Thats not how it works.

With the right solid roller, slightly more compression 500rwhp can be seen before 7000 rpm
on a 346.

Look at the graphs of the LG 358 motor, 500rwhp is
seen before 6000 rpm on that motor.

I know this is an SB2 motor
Old 03-28-2003, 03:24 PM
  #8  
LS1Tech Co-Founder
iTrader: (34)
 
Pro Stock John's Avatar
 
Join Date: Nov 2001
Location: Chicago, IL
Posts: 44,651
Received 1,096 Likes on 720 Posts

Default Re: What is the most power possible out of a 346 Hyd. cammed engine?

Spanky said with a hydraulic cam and 11.5:1 compression, so I am not looking at SR scenarios.
Old 03-28-2003, 08:02 PM
  #9  
I can shift faster than you.
iTrader: (21)
 
Jason99T/A's Avatar
 
Join Date: Nov 2001
Location: Baton Rouge, LA
Posts: 5,133
Likes: 0
Received 0 Likes on 0 Posts

Default Re: What is the most power possible out of a 346 Hyd. cammed engine?

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Camaroholic:
<strong> I know that Thunder is working on a couple solid roller versions of this motor (forged / LS6 / big cam). <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

-Andrew </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Hopefully, mine will be back in the car in a few weeks with the new LS6 heads, valvesprings, and bigger cam. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

<small>[ March 28, 2003, 08:03 PM: Message edited by: Jason99T/A ]</small>
Old 03-28-2003, 09:13 PM
  #10  
TECH Senior Member
iTrader: (1)
 
Camaroholic's Avatar
 
Join Date: Nov 2001
Location: Waco, TX
Posts: 6,449
Likes: 0
Received 0 Likes on 0 Posts

Default Re: What is the most power possible out of a 346 Hyd. cammed engine?

I hope so too, Jason... I hope so too. <img border="0" alt="[evil]" title="" src="graemlins/gr_devil.gif" />

-Andrew
Old 03-28-2003, 09:15 PM
  #11  
TECH Senior Member
iTrader: (18)
 
DONAIMIAN's Avatar
 
Join Date: Jun 2002
Location: NW Houston, TX
Posts: 10,036
Likes: 0
Received 0 Likes on 0 Posts

Default Re: What is the most power possible out of a 346 Hyd. cammed engine?

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"> Hopefully, mine will be back in the car in a few weeks with the new LS6 heads, valvesprings, and bigger cam.
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Ive been keeping track of your car somewhat and thats just sick <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
Good luck <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
Old 03-28-2003, 11:27 PM
  #12  
TECH Addict
 
Bink's Avatar
 
Join Date: Jul 2002
Posts: 2,258
Received 0 Likes on 0 Posts

Default Re: What is the most power possible out of a 346 Hyd. cammed engine?

Hopefully, mine will be back in the car in a few weeks with the new LS6 heads, valvesprings, and bigger cam.
Many await dyno #s <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
Old 03-29-2003, 11:42 AM
  #13  
Moderator
iTrader: (10)
 
John B's Avatar
 
Join Date: Nov 2001
Location: Phoenix, AZ
Posts: 3,248
Received 13 Likes on 6 Posts

Default Re: What is the most power possible out of a 346 Hyd. cammed engine?

I've seen a CARTEK S2X package at 472RWHP through full exhaust and 4.10 gears so I imagine with a good intake manifold this package could push very close to 500RWHP!




All times are GMT -5. The time now is 09:49 AM.