will LS3 heads hold the boost ?? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

ls3lsxz · 09-13-2010, 01:41 PM

i am in progress building LS3 forged internal with ls3 heads but
i am wondering
-do the ls3 head hold the high boost with the upgrading to LS9 gaskets and 12 points stud ?

-what is the maximum power at rwhp of those heads?

-the boost will be at 18psi .

here is my combo:

-Aluminum 6.2 Liters LS3 376 ci, stock LS3 heads and (GMPP single plane EFI).
-(stock crank 58x) ,Wiscopistons and Oliver rods
(compression is 9:2:0)
-Meziere electric water pump WP319.
-SLP Heavy duty oil pump.
-160 Thermostat.
-SLP Under drive pulley.

-Turbonitics TC78 mm .96 A/R (capable to achieve 1000HP) (soon will be changed to PTE88)
-JGS 50mm Wast gate
-JGS 60mm Blow Off Valve
-AMS 500 Boost controller
-AEM Wide band air/fuel.

-inter cooler:27"x12"x3" ,3" inlet & outlet
-MAFF less.
-Patriot gold valve springs 660" lift
-Custom Turbo cam 223/234 .600/.600 115 LSA cam .-Siemens fuel injectors 60lb
-Dual wallbro 255lb in tank.
-Nasty Custom fuel system for 1000 hp .
-Stage 3 TH400 transmission with Trans brake.
-8.8" ford differential.
-car weight is 2900lbs.

thanks

usmcjlp · 09-13-2010, 01:45 PM

How did you get the weight to 2900lbs? Is the car completely stripped?

speedster · 09-13-2010, 02:10 PM

Those heads can be made to hold 18 psi of boost.

Here are some ideas that you may consider:

O-Ring the block (see pic 5 in this post)
http://www.camaro5.com/forums/showpo...4&postcount=13

Use "good" head gaskets and aircraft goop. This works well but in this case was used in conjunction with o-ringing the block.
http://www.camaro5.com/forums/showpo...5&postcount=93

P.S. You meant 3,900 pounds, correct ? Or maybe it is not a 2010, but some earlier/other body style.

ls3lsxz · 09-13-2010, 02:42 PM

no the car is Nissan Datsun 1976 280z lol.. but has ls3 engine

danhr · 09-13-2010, 02:49 PM

I'd like to see the chassis you are working with (i'm going to assume it's a notch/hatch back?). a 2900 lbs is pretty light, considering I'm assuming you have a 10 point chromemoly cage in it, because the setup you are looking at is a very easy 9 second car.

I wouldn't push 16 psi on a stock aluminum block/head with only a 4 bolt head. That's just me.

ls3lsxz · 09-13-2010, 02:58 PM

it is really light car lol....
the stock with forged rods and pistons

armysig · 09-13-2010, 03:03 PM

Quote:

Originally Posted by ls3lsxz

no the car is Nissan Datsun 1976 280z lol.. but has ls3 engine

Goodness, you're creating a monster...

Bobby @ LG Motorsports · 09-13-2010, 03:15 PM

You have answered your question several times on Corvette Forum.

ls3lsxz · 09-13-2010, 04:12 PM

Quote:

Originally Posted by Bobby @ LG Motorsports

You have answered your question several times on Corvette Forum.

man this is the first time i ask for this issue

ADM PERFORMANCE · 09-13-2010, 08:03 PM

That is all we use...Made well over 1000

ls3lsxz · 09-13-2010, 08:23 PM

[QUOTE=ADM PERFORMANCE;2327051]That is all we use...Made well over 1000[/QUOTE

do you mean i can run these heads upto 1000rwhp?

Mayhem Matt · 09-13-2010, 08:35 PM

Blk_SS · 09-13-2010, 10:06 PM

280z+ls swap= im in love , pic please

VRMMMM · 09-14-2010, 01:42 AM

Wow, I had a 76' 280z back in the day. great car, horrible brakes. Met lots of cute girls in that car ..

09-13-2010, 01:41 PM	#1
ls3lsxz Drives: black Join Date: Sep 2010 Location: mi Posts: 12	will LS3 heads hold the boost ?? i am in progress building LS3 forged internal with ls3 heads but i am wondering -do the ls3 head hold the high boost with the upgrading to LS9 gaskets and 12 points stud ? -what is the maximum power at rwhp of those heads? -the boost will be at 18psi . here is my combo: -Aluminum 6.2 Liters LS3 376 ci, stock LS3 heads and (GMPP single plane EFI). -(stock crank 58x) ,Wiscopistons and Oliver rods (compression is 9:2:0) -Meziere electric water pump WP319. -SLP Heavy duty oil pump. -160 Thermostat. -SLP Under drive pulley. -Turbonitics TC78 mm .96 A/R (capable to achieve 1000HP) (soon will be changed to PTE88) -JGS 50mm Wast gate -JGS 60mm Blow Off Valve -AMS 500 Boost controller -AEM Wide band air/fuel. -inter cooler:27"x12"x3" ,3" inlet & outlet -MAFF less. -Patriot gold valve springs 660" lift -Custom Turbo cam 223/234 .600/.600 115 LSA cam .-Siemens fuel injectors 60lb -Dual wallbro 255lb in tank. -Nasty Custom fuel system for 1000 hp . -Stage 3 TH400 transmission with Trans brake. -8.8" ford differential. -car weight is 2900lbs. thanks

09-13-2010, 02:10 PM	#3
speedster SST... Drives: SST Camaro 2010 Join Date: Oct 2008 Location: East Coast of Florida Posts: 5,927 View My Garage	Those heads can be made to hold 18 psi of boost. Here are some ideas that you may consider: O-Ring the block (see pic 5 in this post) http://www.camaro5.com/forums/showpo...4&postcount=13 Use "good" head gaskets and aircraft goop. This works well but in this case was used in conjunction with o-ringing the block. http://www.camaro5.com/forums/showpo...5&postcount=93 P.S. You meant 3,900 pounds, correct ? Or maybe it is not a 2010, but some earlier/other body style. __________________

09-13-2010, 02:49 PM	#5
danhr BAMF SS Drives: 2016 Camaro 1SS A8 Join Date: Mar 2010 Location: Ford City, PA Posts: 3,023	I'd like to see the chassis you are working with (i'm going to assume it's a notch/hatch back?). a 2900 lbs is pretty light, considering I'm assuming you have a 10 point chromemoly cage in it, because the setup you are looking at is a very easy 9 second car. I wouldn't push 16 psi on a stock aluminum block/head with only a 4 bolt head. That's just me. __________________ 2016 1SS A8: FBO + Circle D + P1X + Meth + Tuned by Pray Performance Stock Longblock 800 SAE rwhp. 9.4 @ 145 mph.

09-13-2010, 08:35 PM	#12
Mayhem Matt Drives: 10' 2SS/RS M6 SUPERCHRGED BUMBLEBEE Join Date: Jun 2009 Location: Orange CA Posts: 607 View My Garage	__________________ Ordered Bumblebee 10/15/2008Part of the Family 6/11/2009 #11423 My Bumblebee to Superbee build story...http://www.camaro5.com/forums/showthread.php?t=105163 Superbee's 536hp Dyno Run...http://www.youtube.com/watch?v=AE7wePluPAc

09-14-2010, 01:42 AM	#14
VRMMMM Drives: 2010 Camaro 2SS/RS LS3 Join Date: Apr 2010 Location: Anaheim Hills Posts: 311 View My Garage	Wow, I had a 76' 280z back in the day. great car, horrible brakes. Met lots of cute girls in that car .. __________________ Detroit Speed springs and Sway bars, MGW short shifter, BMR upper and lower control arms, BMR bushings, Roto-Fab intake, Magnaflow exhaust, MTX factory sub, painted stripes, blacked out, recessed tail lights, Pedders sub frame bushings, more on the way

09-13-2010, 01:45 PM	#2
usmcjlp Drives: 2SS/RS LS3 RJT Join Date: Jun 2009 Location: Northern Virginia Posts: 755	How did you get the weight to 2900lbs? Is the car completely stripped?

09-13-2010, 02:42 PM	#4
ls3lsxz Drives: black Join Date: Sep 2010 Location: mi Posts: 12	no the car is Nissan Datsun 1976 280z lol.. but has ls3 engine

09-13-2010, 02:58 PM	#6
ls3lsxz Drives: black Join Date: Sep 2010 Location: mi Posts: 12	it is really light car lol.... the stock with forged rods and pistons

09-13-2010, 03:15 PM	#8
Bobby @ LG Motorsports Drives: 03 Cobra Join Date: Jun 2009 Location: Plano TX Posts: 130	You have answered your question several times on Corvette Forum.

09-13-2010, 08:03 PM	#10
ADM PERFORMANCE Drives: Anything I want Join Date: Oct 2008 Location: DfW - Texas Posts: 5,405	That is all we use...Made well over 1000

09-13-2010, 08:23 PM	#11
ls3lsxz Drives: black Join Date: Sep 2010 Location: mi Posts: 12	[QUOTE=ADM PERFORMANCE;2327051]That is all we use...Made well over 1000[/QUOTE do you mean i can run these heads upto 1000rwhp?

09-13-2010, 10:06 PM	#13
Blk_SS Drives: black on black 2SS/RS Join Date: Feb 2010 Location: Biloxi,MS Posts: 357	280z+ls swap= im in love , pic please

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