Specs on my Tahoe ???

[quick66ss]

I have an 07 with the flexfuel 5.3. What code is the engine in this thing? Is it a LMG or an LY5?

 

[quick66ss]

I found this on Wikip

LY5
Introduced in 2007, the LY5 Vortec 5300 is the replacement for the LM7 Generation III engine. For SUV applications, it is rated at 320 hp (239 kW) and 340 ft·lbf (461 N·m) of torque; for pickup truck applications, it is rated at 315 hp (235 kW) and 338 ft·lbf (458 N·m) of torque.

LY5 applications:

2007-present Chevrolet Avalanche
2007-present Chevrolet Silverado 1500
2007-present Chevrolet Suburban 1/2 ton
2007-present Chevrolet Tahoe
2007-present GMC Sierra 1500
2007-present GMC Yukon
2007-present GMC Yukon XL 1/2 ton


[edit] LMG
The LMG Vortec 5300 is the flexible-fuel version of the LY5. Power and torque ratings for SUV and pickup truck applications are the same as each application's LY5 rating.

LMG applications:

2007-present Chevrolet Avalanche
2007-present Chevrolet Silverado 1500
2007-present Chevrolet Suburban 1/2 ton
2007-present Chevrolet Tahoe
2007-present GMC Sierra 1500
2007-present GMC Yukon
2007-present GMC Yukon XL 1/2 ton

 

[05Yukon]

I thought one of the two had a lower power rating. Or was that the iron block one?

 

[Sepiroth]

The aluminum blocks are the ones in the TBSS and Impala/Monte Carlo SS, IIRC.

 

[wmgood64]

nice!

 

[rogersinsel]

I have an 07 with the flexfuel 5.3. What code is the engine in this thing? Is it a LMG or an LY5?

I believe the LY5 is the 5.3 non-flex fuel version. And the LMG is the flex fuel variant. All other specs are the same. I copied this from the 2009 Tahoe ordering book.

LY5 - Engine, Vortec 5.3L V8 SFI with Active Fuel Management
(320 hp [238.6 kW] @ 5200 rpm, 340 lb-ft of torque [459.0
N-m] @ 4200 rpm), iron block
1 - Requires 2WD models. Not available on 4WD models.

LMG - Engine, Vortec 5.3L V8 SFI FlexFuel with Active Fuel
Management, capable of running on unleaded or up to
85% ethanol (320 hp [238.6 kW] @ 5200 rpm, 340 lb-ft of
torque [459.0 N-m] @ 4200 rpm), iron block
1 - Standard on 4WD models. Available on 2WD models.