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Discussion Starter · #1 ·
I was talking to a guy who works in the shop at our local pontiac dealer, he said that GM was basically out of LS1's and if your LS1 goes bad and is under warranty, they are replacing them with LS6's... anyone else heard this?
 

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The "LS1" in the 04 GTO uses an LS6 block and a few other parts from the LS6 but has LS1 internals. So we technically already have an LS6. All you would really have to have on it to call it an LS6 is the heads and cam from the old Zo6 motor. :cool
 

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not exectly true................................

New aluminum block casting with revised oil galleries and provisions for external knock sensors – external sensors improve serviceability

Camshaft lift increased to take advantage of increased cylinder head flow

Camshaft sensor relocated from the rear of the block to the front of the block provides room for new oil galleries

Flat-top piston design with lower ring tension reduces friction

Piston floating wrist pins help quiet the engine

More efficient ignition coils require less energy to provide a comparable spark

Compression raised to 10.9:1

Larger, 90-mm single-blade throttle body

Reduced-mass water pump design with improved sealing capability

Engine “redline” raised to 6500 rpm

Revised and more powerful engine controller incorporates all electronic throttle control functions.
 
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