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LQ4 vs LQ9

III1999-08LQ4 (U)300-325 @ 5200360-370 @ 44006.04.003.629.4:1Iron/Iron-Alum. heads
III2002-07LQ9 (N)345 @ 5200380 @ 40006.04.003.6210.0:1Iron/Alum. heads

either way, an extreme killer deal !


LQ4
The Vortec 6000 LQ4, is a V8 truck engine. Displacement is 5,967 cc (6.0 L; 364.1 cu in) from a bore and stroke of 101.6 mm × 92 mm (4.00 in × 3.62 in). It is an iron/aluminum (1999 & 2000 model year engines had cast iron heads) design and produces 300 to 325 hp (224 to 242 kW) and 360 to 370 lb⋅ft (488 to 502 N⋅m). LQ4s are built in Romulus, Michigan and Silao, Mexico.

(VIN U) Applications:
LQ9
The Vortec HO 6000 or VortecMAX is a special high-output version of the Vortec 6000 V8 truck engine originally designed for Cadillac in 2002. This engine was renamed as the VortecMAX for 2006. It features high-compression (10:1) flat-top pistons for an extra 10 hp (7 kW) and 10 lb⋅ft (14 N⋅m), bringing output to 345 hp (257 kW) and 380 lb⋅ft (515 N⋅m). LQ9s are built only in Romulus, Michigan.

LQ9 (VIN N) Applications:
 
Discussion starter · #22 ·
LQ4 vs LQ9

III1999-08LQ4 (U)300-325 @ 5200360-370 @ 44006.04.003.629.4:1Iron/Iron-Alum. heads
III2002-07LQ9 (N)345 @ 5200380 @ 40006.04.003.6210.0:1Iron/Alum. heads

either way, an extreme killer deal !


LQ4
The Vortec 6000 LQ4, is a V8 truck engine. Displacement is 5,967 cc (6.0 L; 364.1 cu in) from a bore and stroke of 101.6 mm × 92 mm (4.00 in × 3.62 in). It is an iron/aluminum (1999 & 2000 model year engines had cast iron heads) design and produces 300 to 325 hp (224 to 242 kW) and 360 to 370 lb⋅ft (488 to 502 N⋅m). LQ4s are built in Romulus, Michigan and Silao, Mexico.

(VIN U) Applications:
LQ9
The Vortec HO 6000 or VortecMAX is a special high-output version of the Vortec 6000 V8 truck engine originally designed for Cadillac in 2002. This engine was renamed as the VortecMAX for 2006. It features high-compression (10:1) flat-top pistons for an extra 10 hp (7 kW) and 10 lb⋅ft (14 N⋅m), bringing output to 345 hp (257 kW) and 380 lb⋅ft (515 N⋅m). LQ9s are built only in Romulus, Michigan.

LQ9 (VIN N) Applications:
The last owner thought it was an LQ4. He had plans for a turbo set-up but sold the car a few years ago. The lower compression version is better for boost. All I know is what came from him. He said it's out of an 05 Silverado 2500. I'm suspecting 4WD since there was no trans with it. But that's really just a guess. All I know now is I tripped over and bought the Holy Grail LS truck motor for 1k with 58k miles! If I don't find a decent car/truck/cruck to put it in I'll just turn everything upside down and sell my rebuilt rear end and stuff this 6.0 (after a few upgrades) into the ElCo and add a Quick Performance 9"! The trans is already built to take 600hp ..........Oh, then what to do with the 370hp 5.3? Back to the title! Decisions, decisions................. I love life!

Joe
 
The last owner thought it was an LQ4. He had plans for a turbo set-up but sold the car a few years ago. The lower compression version is better for boost. All I know is what came from him. He said it's out of an 05 Silverado 2500. I'm suspecting 4WD since there was no trans with it. But that's really just a guess. All I know now is I tripped over and bought the Holy Grail LS truck motor for 1k with 58k miles! If I don't find a decent car/truck/cruck to put it in I'll just turn everything upside down and sell my rebuilt rear end and stuff this 6.0 (after a few upgrades) into the ElCo and add a Quick Performance 9"! The trans is already built to take 600hp ..........Oh, then what to do with the 370hp 5.3? Back to the title! Decisions, decisions................. I love life!

Joe
Life is hard, ain't it Joe?....

if you decide to sell your rebuilt rear end, let me know, I may be interested
 
Discussion starter · #25 ·
OK, a car showed up and I bought it just because I knew I could sell it for more than I gave for it. Now it looks like this car will be fun to stuff this 6.0 into! Since my ElCo is now running pretty much trouble free, I can now build the motor I couldn't find when I started out building it, and still enjoy driving my ElCo while I work out the bugs before I swap the motors and sell the test mule! That's the plan so far! So, the adventure begins! I already have researched how much I will have to stiffen the chassis up! This is gonna be fun!
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Joe
 
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