500whp NA stock bottom LS2 GTO....
09-04-2008, 01:51 AM
#21
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To bad I can't find a link to the cam any more... but the combo used to be.
ETP Heads, Ported Fast, Port LS2 TB, Kooks 1 7/8 with Catless mid's, Harland Sharp or Yellow Terra 1.7 rockers, and the Hellion cam shaft.
Just as an example I'm going to pull from JeffP's sig (LS1GTO forum member)
500rwhp on a LS2 stock bottom is possible and doable.
Now you could possibly get close or just over 500rwhp with a L92 combo consisting of the LG G6x3, Ported LS3/L92 heads (shaved to a 64cc chamber to keep your 11:1 compression), Ported LS3 Manifold, Ported TB, Yellow Terra 1.7" shaft mounted rockers, electric pump (can't hurt), and all the other fixings (headers, catless mids, udp, etc).
ETP Heads, Ported Fast, Port LS2 TB, Kooks 1 7/8 with Catless mid's, Harland Sharp or Yellow Terra 1.7 rockers, and the Hellion cam shaft.
Just as an example I'm going to pull from JeffP's sig (LS1GTO forum member)
2006 SRM M6 - Performance - ETP-225 coated, Morel lifters, SLP U/D Pulley, FAST Ported Intake, Ported TB, Kooks 1-7/8's, Flowtech Hellion Cam, DMS Intake, 50lb injectors, 3" Spintech, 255lph Pump, 160 T-Stat, Taylor Wires.
Drivetrain/Suspension - Tex Exo-skel, Alum. Driveshaft, SS clutch line, GMM Ripshifter, Pedders everything, Noltec mounts, Harrop Cover, Hotchkis Swaybars, DBA Rotors, Hawk HPS, BMR Strut bar. 525rwhp 466rwtq STD 510rwhp 453rwtq SAE
Drivetrain/Suspension - Tex Exo-skel, Alum. Driveshaft, SS clutch line, GMM Ripshifter, Pedders everything, Noltec mounts, Harrop Cover, Hotchkis Swaybars, DBA Rotors, Hawk HPS, BMR Strut bar. 525rwhp 466rwtq STD 510rwhp 453rwtq SAE
Now you could possibly get close or just over 500rwhp with a L92 combo consisting of the LG G6x3, Ported LS3/L92 heads (shaved to a 64cc chamber to keep your 11:1 compression), Ported LS3 Manifold, Ported TB, Yellow Terra 1.7" shaft mounted rockers, electric pump (can't hurt), and all the other fixings (headers, catless mids, udp, etc).
Last edited by Bring the Noise; 09-04-2008 at 02:02 AM. Reason: Just thought of the other half.
09-05-2008, 10:21 PM
#23
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i talked to jason and trevor @ texas speed and they said pretty much the same thing. its possible but it will take a very well coordinated and maxed out effort. he also said that the valves on the L92 heads are so big that u cant run a very large cam w/o cutting reliefs in the pistons. so im rethinking my plan in the future to do a LS3 stroker with LS7 heads. i think 600whp would be no problem with that combo.
09-06-2008, 12:20 AM
#24
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GM LS7 heads will not work on the LS3 block, the bore on the block is to small for the LS7 valves.
ETP 4" bore LS7 heads will work with the LS3 block, they will work on the LS2 block as well.
ETP 4" bore LS7 heads will work with the LS3 block, they will work on the LS2 block as well.
09-06-2008, 08:53 AM
#25
Yes it can... See Sig Below! Stock bottom end 500RWHP N/A spinning to 7000rpm using the (Junk) Dart 225 heads untouched.
That was before the:
Shaft Mounted Rockers
Lightweight Twin Disc Clutch
Prototype OTR Vararam Cold Air Intake
& through the stock air box.
I am also looking at getting an electric water pump & a carbon fiber drive shaft just to get a little more out of it. I feel 515RWHP on stock bottom end shouldn't be too much of a challenge. Good luck!
That was before the:
Shaft Mounted Rockers
Lightweight Twin Disc Clutch
Prototype OTR Vararam Cold Air Intake
& through the stock air box.
I am also looking at getting an electric water pump & a carbon fiber drive shaft just to get a little more out of it. I feel 515RWHP on stock bottom end shouldn't be too much of a challenge. Good luck!
09-06-2008, 10:18 AM
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Now, to argue and work so hard to get a few extra horsepower to break "500 rwhp" is a waste, as I would rather just want a car that runs hard at the track. No matter if it makes 497 rwhp or 505. LOL
09-06-2008, 12:03 PM
#27
^^^^ Good point!
The thing is in order to get 500rwhp out of a small engine you need to spin it to the moon. That makes the power in a non usuable range for 98% of the cars driven on the streets. Really its a gimick. Power under the curve in a useable range is much much effective. You can run the L92's but you need a properly spec'ed out cam and that doesn't mean throwing the biggest stick in there you can find.
The thing is in order to get 500rwhp out of a small engine you need to spin it to the moon. That makes the power in a non usuable range for 98% of the cars driven on the streets. Really its a gimick. Power under the curve in a useable range is much much effective. You can run the L92's but you need a properly spec'ed out cam and that doesn't mean throwing the biggest stick in there you can find.
09-07-2008, 11:03 PM
#28
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^^^^ Good point!
The thing is in order to get 500rwhp out of a small engine you need to spin it to the moon. That makes the power in a non usuable range for 98% of the cars driven on the streets. Really its a gimick. Power under the curve in a useable range is much much effective. You can run the L92's but you need a properly spec'ed out cam and that doesn't mean throwing the biggest stick in there you can find.
The thing is in order to get 500rwhp out of a small engine you need to spin it to the moon. That makes the power in a non usuable range for 98% of the cars driven on the streets. Really its a gimick. Power under the curve in a useable range is much much effective. You can run the L92's but you need a properly spec'ed out cam and that doesn't mean throwing the biggest stick in there you can find.
