Refurbished LS3 Long Block



Refurbished LS3 Longblock 10.25 to 1 CR 539hp/483tq

Expected to Ship Today


KATECH LS3 6.2 Dyno Tested engine
Great for any hot rod,street,drift car or even truck / mud truck project.
Refreshed and dyno cell tested

KATECH engine Build spec:
LS3 6.2 liter 539.7 HP / 483.6 TQ
LS3 intake manifold
LS3 fuel injectors
LS3 front drive
KATECH CNC PORTED LS3 cylinder heads
Custom Cam 230/258 @ .050 .639/.612 lift 115 LSA
PSI LS1511 valve springs
Mahle pistons & rings
Eagle connecting rods with ARP 2000 rod bolts
GM 3.622 stroke INTERNALLY BALANCED crankshaft
GM wet sump oiling
4.065 bore x 3.622 stroke
10.25:1 compression ratio
This Engine makes 539.7 HP / 483.6 TQ
To see graph click on view enlarged image..
Only this one available at this time..

Katech engines has been hand building engines in house since 1977
Each hand built engine is individually DYNO TESTED & DYNO PROVEN before being sold