4.8L LS: How Much Horsepower Can We Squeeze Out Of GM's Smallest Displacement LS Engine?
GM’s 4.8L is the tiniest and cheapest of the LS family. But can it make power? Watch as we add a cornucopia of speed parts and figure out if GM’s red-headed stepchild deserves a place in the engine bay of your hot rod!
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Parts Dyno Tested
Edelbrock E-Street Cathedral Port Cylinder Heads: PN 77617
COMP Magnum Pushrods: PN 7162-16
Edelbrock VR-S Series 850CFM carburetor: PN 1308
Hydraulic Roller Lifters: PN 8957-16
COMP Camshaft: LSR 235/251 PN 54-478-11
COMP BSR Shaft Rockers: PN 1981-16
Edelbrock Victor Jr. Carbureted Intake: PN 2908
FAST LSXR Fuel Injected Intake: PN 146302B
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