LS engine????
1/4 mile/AutoX
Joined: Jun 2014
Posts: 11,439
Likes: 2,184
From: Buffalo Texas
yes, it's just the engine series that GM puts on them. My 69 Camaro with a 396 was a L78 // a Chevelle with a 454 with aluminum heads was a LS 6 !!! don't know why GM couldn't come up with a better way ???
1/4 mile/AutoX
Joined: Jun 2014
Posts: 11,439
Likes: 2,184
From: Buffalo Texas
Racer
Joined: Nov 2013
Posts: 277
Likes: 37
From: Central Mississippi
Burning Brakes
Joined: Jun 2022
Posts: 757
Likes: 365
The big upgrade from the older SBC was the heads have a 15deg valve angle vs the 23deg heads of old. The 15deg head is a better design and flowed more air thus making more power. There were other changes like the cathedral ports ( newer LS motors have a square port) and the block mains etc.
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