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Help Identify Vortec engine

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Old Sep 30, 2013 | 07:35 PM
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Default Help Identify Vortec engine






It came with 4L60E transmission

#706 was on the bottom block
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Old Sep 30, 2013 | 08:07 PM
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Looks like 4.8/5.3
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Old Sep 30, 2013 | 08:48 PM
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LQ4? http://www.ebay.com/itm/6-0-LITER-VORTEC-LQ4-DROPOUT-ENGINE-MOTOR-CHEVY-SILVERADO-84K-COMPLETE-DROP-OUT-/150837372910?pt=Motors_Car_Truck_Parts_Accessories&hash=item231e9ba7ee&vxp=mtr
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Old Sep 30, 2013 | 09:11 PM
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What is the head casting number, and the block casting number, head casting number is located on the bottom right side of each head under the valve cover. Block casting number is located on the backside of the block under the driver side cylinder head.
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Old Sep 30, 2013 | 09:35 PM
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12569519 dont quote me on that ill check tomorow when the sun is out
Last edited by ion05; Sep 30, 2013 at 09:54 PM.
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Old Sep 30, 2013 | 10:19 PM
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Head casting # 21995J2710865

Block Casting # 601806850776
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Old Oct 1, 2013 | 10:30 AM
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Bump....bump
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Old Oct 1, 2013 | 11:00 AM
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If the casting number 706 is on the corner of the head then that means that the motor is most likely a 5.3l
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Old Oct 1, 2013 | 11:08 AM
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Going by the head casting, it's an early 4.8l/5.3l for sure. Dished pistons are 5.3l. Flat tops are 4.8l.
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Old Oct 1, 2013 | 12:30 PM
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706 is on the corner of the head so its a 5.3 LQ4 that I have?
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Old Oct 1, 2013 | 12:52 PM
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Originally Posted by Remnant-of-VII
Going by the head casting, it's an early 4.8l/5.3l for sure. Dished pistons are 5.3l. Flat tops are 4.8l.
Its drive by wire though, So I am not sure how early it is.

Originally Posted by ion05
706 is on the corner of the head so its a 5.3 LQ4 that I have?
No it looks like you have a 5.3 LM7
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Old Oct 1, 2013 | 01:03 PM
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It has the old style of intake cover so its either 99-00. Look at the right rear corner of the block and it will have either 6.0 or 4.8/5.3 cast into it. Some SUVs were equipped with DBW before 03 but had that vette style of throttle body.
And if it was a 6.0 in 99-00, it would have iron heads. It's either a 4.8/5.3. Pull a spark plug and see if it has dished or flat tops. Dished= 5.3. Flat=4.8
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Old Oct 1, 2013 | 01:18 PM
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Would it be good to swap this in a foxbody? or better off looking for a ls1 or another vortec engine?
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Old Oct 1, 2013 | 01:26 PM
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their dished heads
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