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5.3l Engine For Trucks With Vin# B, T, Or Z.


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#1 apoc6979

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Posted 28 July 2009 - 04:27 AM

Was wondering what the difference is with the 5.3L engines that came out of vehicles with the VIN#'s B, T, or Z. I have a 2005 1500 Z71 with the VIN# B. Why can't i use an engine that came out of a T or Z vehicle.

#2 MS3DALE

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Posted 03 August 2009 - 10:18 PM

Was wondering what the difference is with the 5.3L engines that came out of vehicles with the VIN#'s B, T, or Z. I have a 2005 1500 Z71 with the VIN# B. Why can't i use an engine that came out of a T or Z vehicle.


The VIN "B" is the aluminum block "High-Output" 5.3 with 310hp,Its RPO code "L33"
The VIN "Z" is the iron block "flex-fuel" 5.3 with 295hp that can run on E85 Ethanol,Its RPO code "L59"
The VIN "T" is the iron block "non" flex-fuel 5.3 with 295hp that CANNOT run on E85,Its RPO code "LM7"

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'07 SILVERADO Z71 LT2 "VortecMAX" 6-Liter,"Super-Duty" Auto Trans,9 1/2" rear-end w/3.73 G80 Locker,XM,On-Star,BOSE speaker system,Stabilitrak,Block Heater,Sunroof,18" ARE "Cannon" Wheels w/LT275/65R18 Goodyear Wrangler AT/S tires.
Custom tune by Justin at Black Bear,CORSA "Sport" exhaust system,EXTANG "Full-Tilt" snapless tonneau cover,Rough Country 1.5" front leveling kit,Fabtech 1" rear lift blocks,EZ-Down tailgate damper.
GM accessories...Hood Deflector,Molded Mud-Flaps,Ventvisors,Catch-All Floor-Mats,Bedrail Protectors,BedRug Bedliner & Bedmat,and a GM Performance Parts cold-air intake.

2011 CAMARO 2SS/RS - LS3/M6 - Inferno Orange Met. - HURST short-throw - Roto-Fab CAI - Kook's LTs - CORSA exhaust - Black Bear tuned (playtoy!)
2012 CRUZE 1LT - Blue Topaz Met. - RS pkg.- Convenience pkg. (work car!)

My Garage


#3 sl33py24

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Posted 05 August 2009 - 05:32 PM

Can I swap out the iron block for the alumin block with out any mods????

05 Sierra 5.3L CC SLT

5000k H.I.D Low Beams 3000k H.I.D Fogs, ATS SIDE STEPS, 20"RIMS BLACK W/POLISHED LIP, 285/50R-20 112V B Yokohama Parada Spec-X, Escalade Platinum Cluster, Escalade Side Mirrors W/Puddle Lamp, Silverado Tail Lights

#4 MS3DALE

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Posted 05 August 2009 - 06:58 PM

Can I swap out the iron block for the alumin block with out any mods????


You might be able to,although it might need retuned.
I would make sure some of the parts are the same for both.....fuel pump,fuel injectors,O2 sensors,etc.

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'07 SILVERADO Z71 LT2 "VortecMAX" 6-Liter,"Super-Duty" Auto Trans,9 1/2" rear-end w/3.73 G80 Locker,XM,On-Star,BOSE speaker system,Stabilitrak,Block Heater,Sunroof,18" ARE "Cannon" Wheels w/LT275/65R18 Goodyear Wrangler AT/S tires.
Custom tune by Justin at Black Bear,CORSA "Sport" exhaust system,EXTANG "Full-Tilt" snapless tonneau cover,Rough Country 1.5" front leveling kit,Fabtech 1" rear lift blocks,EZ-Down tailgate damper.
GM accessories...Hood Deflector,Molded Mud-Flaps,Ventvisors,Catch-All Floor-Mats,Bedrail Protectors,BedRug Bedliner & Bedmat,and a GM Performance Parts cold-air intake.

2011 CAMARO 2SS/RS - LS3/M6 - Inferno Orange Met. - HURST short-throw - Roto-Fab CAI - Kook's LTs - CORSA exhaust - Black Bear tuned (playtoy!)
2012 CRUZE 1LT - Blue Topaz Met. - RS pkg.- Convenience pkg. (work car!)

My Garage


#5 sl33py24

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Posted 07 August 2009 - 12:11 PM

i think its easier just to swap the whole motor

05 Sierra 5.3L CC SLT

5000k H.I.D Low Beams 3000k H.I.D Fogs, ATS SIDE STEPS, 20"RIMS BLACK W/POLISHED LIP, 285/50R-20 112V B Yokohama Parada Spec-X, Escalade Platinum Cluster, Escalade Side Mirrors W/Puddle Lamp, Silverado Tail Lights

#6 MS3DALE

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Posted 07 August 2009 - 01:00 PM

i think its easier just to swap the whole motor


I thought thats what you meant anyway.
You would still probably need to get it re-tuned,and make sure all the other parts would be the same like I said before (fuel pump,fuel injectors,O2 sensors,etc.)

sig1alternate.png
'07 SILVERADO Z71 LT2 "VortecMAX" 6-Liter,"Super-Duty" Auto Trans,9 1/2" rear-end w/3.73 G80 Locker,XM,On-Star,BOSE speaker system,Stabilitrak,Block Heater,Sunroof,18" ARE "Cannon" Wheels w/LT275/65R18 Goodyear Wrangler AT/S tires.
Custom tune by Justin at Black Bear,CORSA "Sport" exhaust system,EXTANG "Full-Tilt" snapless tonneau cover,Rough Country 1.5" front leveling kit,Fabtech 1" rear lift blocks,EZ-Down tailgate damper.
GM accessories...Hood Deflector,Molded Mud-Flaps,Ventvisors,Catch-All Floor-Mats,Bedrail Protectors,BedRug Bedliner & Bedmat,and a GM Performance Parts cold-air intake.

2011 CAMARO 2SS/RS - LS3/M6 - Inferno Orange Met. - HURST short-throw - Roto-Fab CAI - Kook's LTs - CORSA exhaust - Black Bear tuned (playtoy!)
2012 CRUZE 1LT - Blue Topaz Met. - RS pkg.- Convenience pkg. (work car!)

My Garage





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