what is a LY6
08-14-2010, 11:08 AM
#21
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I just bought a ly6 For my 69 camaro. It is a 2009 with 29 miles on it. Does anyone know the horse power. Is it the same as the marine application LY6 or is it 353 hp as the 2007 year was.
08-15-2010, 10:30 AM
#22
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I believe the HP is dependeant on the orginal vechicle the motor came from. I wouldn't worry too much on the factory HP. You got a 6.0L with L92 heads and VVT. What are your plans for your build?
08-15-2010, 12:27 PM
#24
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Thread Starter
IIRC........ the rods are suspose to be better than the earlier one. But I am not 100% sure. Unless you plan on forced induction. would it really matter? IIRC.... LQ4= 9.4:1CR LY6=9.6:1 CR
08-28-2012, 05:59 AM
#25
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Specifications
2009
© 2008 General Motors Corporation
PRINTED IN U.S.A. 01/31/08
www.gmpowertrain.com
GM Powertrain
Type: 6.0L V8 (LY6)
Displacement: 364 cid (5967 cc)
Engine Orientation: Longitudinal
Compression Ratio: 9.6:1
Valve Configuration: Overhead Valves
(2 valves per cylinder)
Assembly Site: Romulus, Michigan
Valve Lifters: Hydraulic Roller
Firing Order: 1 - 8 - 7 - 2 - 6 - 5 - 4 - 3
Bore x Stroke: 101.6 X 92 mm
Bore Center: 111.76 mm
Bore Area: 648.59 cm2
Fuel System: Port Fuel Injection
Fuel Type: Regular Unleaded
Horsepower:
385 hp (287 kW) @ 5600 rpm
Torque:
400 lb-ft (542 Nm) @ 4400 rpm
Fuel Shutoff: 5600 rpm
Engine Mass: 539 lb (245 kg)
Emissions Controls: Positive Crankcase Ventilation (PCV)
Materials:
Block: Cast Iron
Cylinder Head: Cast Aluminum
Intake Manifold: Composite
Main Bearing Caps: Powder Metal
Crankshaft: Cast Iron with Undercut and Rolled Fillets
Camshaft: Steel
Connecting Rods: Forged Powder Metal
¶Cast iron deep-skirt cylinder block with six-bolt
main bearing caps that limit crankshaft flex and
stiffen the engine’s structure
¶Cast aluminum structural oil pan for additional
rigidity
¶High flow aluminum cylinder head design
¶Variable valve timing using a hydraulic cam phaser
to retard cam timing for low end torque and
advance cam timing for high rpm horsepower
¶Steel camshaft, hydraulic roller lifters, and steel
roller rocker arms for reduced friction and excellent
durability
¶Returnless fuel injection with stainless steel fuel rail
¶Electronic Throttle Body fully compatible with
electronic throttle control software in the MEFI-5
engine control module
¶Coil-near-plug ignition system with 58X crankshaft
position encoder, 4X cam sensor, and dual flat
response knock sensors for precise control of
ignition timing under all operating conditions
¶Iridium tip long-life spark plugs with improved “selfcleaning”
properties which decrease the potential
for plug fouling
¶External water crossover integrated into the water
pump casting so that no coolant flows through the
composite intake manifold
¶Inconnel (high temperature) exhaust valves for
long-term durability
¶Revised cam phaser for improved idle quality
¶Shallow sump oil pan for marine applications
¶Floating pin pistons which reduce noise and
increase durability
¶Heavy-duty timing chain with a new leaf spring
dampener to ensure quiet operation and long-term
durability
2009
© 2008 General Motors Corporation
PRINTED IN U.S.A. 01/31/08
www.gmpowertrain.com
GM Powertrain
Type: 6.0L V8 (LY6)
Displacement: 364 cid (5967 cc)
Engine Orientation: Longitudinal
Compression Ratio: 9.6:1
Valve Configuration: Overhead Valves
(2 valves per cylinder)
Assembly Site: Romulus, Michigan
Valve Lifters: Hydraulic Roller
Firing Order: 1 - 8 - 7 - 2 - 6 - 5 - 4 - 3
Bore x Stroke: 101.6 X 92 mm
Bore Center: 111.76 mm
Bore Area: 648.59 cm2
Fuel System: Port Fuel Injection
Fuel Type: Regular Unleaded
Horsepower:
385 hp (287 kW) @ 5600 rpm
Torque:
400 lb-ft (542 Nm) @ 4400 rpm
Fuel Shutoff: 5600 rpm
Engine Mass: 539 lb (245 kg)
Emissions Controls: Positive Crankcase Ventilation (PCV)
Materials:
Block: Cast Iron
Cylinder Head: Cast Aluminum
Intake Manifold: Composite
Main Bearing Caps: Powder Metal
Crankshaft: Cast Iron with Undercut and Rolled Fillets
Camshaft: Steel
Connecting Rods: Forged Powder Metal
¶Cast iron deep-skirt cylinder block with six-bolt
main bearing caps that limit crankshaft flex and
stiffen the engine’s structure
¶Cast aluminum structural oil pan for additional
rigidity
¶High flow aluminum cylinder head design
¶Variable valve timing using a hydraulic cam phaser
to retard cam timing for low end torque and
advance cam timing for high rpm horsepower
¶Steel camshaft, hydraulic roller lifters, and steel
roller rocker arms for reduced friction and excellent
durability
¶Returnless fuel injection with stainless steel fuel rail
¶Electronic Throttle Body fully compatible with
electronic throttle control software in the MEFI-5
engine control module
¶Coil-near-plug ignition system with 58X crankshaft
position encoder, 4X cam sensor, and dual flat
response knock sensors for precise control of
ignition timing under all operating conditions
¶Iridium tip long-life spark plugs with improved “selfcleaning”
properties which decrease the potential
for plug fouling
¶External water crossover integrated into the water
pump casting so that no coolant flows through the
composite intake manifold
¶Inconnel (high temperature) exhaust valves for
long-term durability
¶Revised cam phaser for improved idle quality
¶Shallow sump oil pan for marine applications
¶Floating pin pistons which reduce noise and
increase durability
¶Heavy-duty timing chain with a new leaf spring
dampener to ensure quiet operation and long-term
durability
You have your horsepower and torque numbers wrong on the LY6 it's output is 360 hp 380 tq sorry: who gave you those 385/400 #;s?
05-28-2013, 03:08 AM
#31
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https://ls1tech.com/forums/generatio...heads-l92.html
Read this thread. Pretty well explains the different Rectangular port heads. Eric L
Read this thread. Pretty well explains the different Rectangular port heads. Eric L
05-28-2013, 12:28 PM
#33
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Thread Starter
My '08 LY6 came with the 5364.
05-28-2013, 12:35 PM
#34
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Thats interesting. My 08 LY6 came with 823 heads. Mine came out of a 2008 2500 conversion van. What did yours come from. Maybe assembly line motors and over the counter/replacement motors used different castings? Interesting none the less. Eric L
05-28-2013, 12:51 PM
#35
TECH Senior Member
Thread Starter
iirc Mine was out of a 08 Silverado HD2500. It came with the LY6 and a two wheel drive 6L90e. I almost bought the trans just to flip it. I could of got it for $800.oo IIRC
05-29-2013, 07:17 PM
#39
TECH Senior Member
Thread Starter
I think you guys really want the headach of those 4L80es. Save yourself ALOT of hassle and do M6. I guess I could take a 4L80 for $200 and do you a huge favor.
05-29-2013, 10:26 PM
#40
My Ly6 came from a 07 2500 HD. It was re ringed, and bearings put in, swapped in a FTI cam, milled heads .020. Add a carb and a 6012. In my 3100 lb Stang, it has went a best of 6.63@105 with a 1.57 60ft. It has tons of power. When i get the timing right and get it to hook, it will go 6.4s at least.