Forged 371ci LQ9 with ported L92s, 545hp/517tq
03-31-2012, 06:30 PM
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Forged 371ci LQ9 with ported L92s, 545hp/517tq
Iron block 371 cubic inch LQ9, with mildly ported L92/LS3 cylinder heads. The engine was professionally built, and has been balanced and blueprinted. The engine made 545 horsepower and 517 lb ft of torque on the engine dyno.
LQ9 block, baked and bead blasted, bored, honed to 4.040" bore
Clevite H main and rod bearings, Durabond cam bearings
New GM Main bolts, and GM cylinder head bolts
Autotec forged 4032 pistons, Flat Top with 4cc valve reliefs, the engine is 10.85:1 compression ratio. Pistons are .011" out of the hole.
Racetec Plasma-moly rings gapped .018" top, .020" second.
K1 H beam rods 6.125" .927" pin, ARP 2000 rod bolts
Stock 3.622 stroke LQ9 crank, polished and balanced to less than 0.5g
TSP 228R camshaft, 228°/228° duration @ 0.050, .588"/.588" valve lift, 112° Lobe seperation angle
LS2 Timing Chain
L92/LS3 cylinder heads, new Engine Pro .600" springs, fresh 5 angle valvejob, mild bowl hand porting work. The ports flow 330 CFM intake, 229 CFM exhaust
GM 6.0 MLS head gaskets
GM LS7 Lifters
TSP 7.400" hardened chromoly pushrods
Ported and shimmed factory oil pump
Stock LY6 truck intake, OR LS3 intake, LS3 injectors, with 87mm drive by wire throttle body
Truck oil pan, waterpump, and pulley
Coil packs are included
Engine Dyno Video, here:
Forged 371 LQ9/LY6 545hp, 517tq - YouTube
Note: The headers, wiring harness, and billet TB used to run the engine in the video are NOT included.
$5000 picked up in Chaska, MN. Or you pay shipping.
A few pics
Truck intake
LS3 intake
LQ9 block, baked and bead blasted, bored, honed to 4.040" bore
Clevite H main and rod bearings, Durabond cam bearings
New GM Main bolts, and GM cylinder head bolts
Autotec forged 4032 pistons, Flat Top with 4cc valve reliefs, the engine is 10.85:1 compression ratio. Pistons are .011" out of the hole.
Racetec Plasma-moly rings gapped .018" top, .020" second.
K1 H beam rods 6.125" .927" pin, ARP 2000 rod bolts
Stock 3.622 stroke LQ9 crank, polished and balanced to less than 0.5g
TSP 228R camshaft, 228°/228° duration @ 0.050, .588"/.588" valve lift, 112° Lobe seperation angle
LS2 Timing Chain
L92/LS3 cylinder heads, new Engine Pro .600" springs, fresh 5 angle valvejob, mild bowl hand porting work. The ports flow 330 CFM intake, 229 CFM exhaust
GM 6.0 MLS head gaskets
GM LS7 Lifters
TSP 7.400" hardened chromoly pushrods
Ported and shimmed factory oil pump
Stock LY6 truck intake, OR LS3 intake, LS3 injectors, with 87mm drive by wire throttle body
Truck oil pan, waterpump, and pulley
Coil packs are included
Engine Dyno Video, here:
Forged 371 LQ9/LY6 545hp, 517tq - YouTube
Note: The headers, wiring harness, and billet TB used to run the engine in the video are NOT included.
$5000 picked up in Chaska, MN. Or you pay shipping.
A few pics
Truck intake
LS3 intake
Last edited by Jakson; 04-06-2012 at 08:46 PM.
