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Discussion Starter · #1 ·
I have a 2003 GMC Yukon XL 5.3L. Is my motor based off the LS1 or LS2 Design. I was told it was the LS1 design. The reason is I am looking at the MSD coils and they have 2 Diffrent designs. The first pic is for the LS1 motor and the second pic is for the LS2 motor. The one for the LS2 motor fits my vehicle. So is my engine a LS2 design or what?

LS1:
LS1Coil.jpg



LS2:
LS2.jpg
 

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I CANT SPELL GET OVER IT
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1,705 Posts
waste of cash
 

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HOT AIR BALLOON OWNER
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14,932 Posts
Gen III design... which would be the LS1.

Yes, pass on the MSD coils.
 

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HOT AIR BALLOON OWNER
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14,932 Posts

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Mayhem, Like Me
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3,087 Posts
not worth $800 to me to see 8hp.... there's guys running over 1Khp with stock ignition systems.... just aftermarket plugs and wires...
 

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HOT AIR BALLOON OWNER
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14,932 Posts
Hell, stock wires even are fine...
 
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