What to look for when buying 67-72 c10 with LQ9(6.0) swap? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

rex01atv · 02-04-2017, 10:26 AM

Need help I am looking at buying a 72 c10 swb with a already converted 04 Escalade engine/trans installed. What are some things to look for to make sure install was done correctly? Wiring? etc..

**clay68c10** · 02-04-2017, 11:16 AM

Bring along a generic OBD scanner and see if it has any codes. This will be an indication of how well the swap was done from a programming and wiring standpoint.

weq92f · 02-04-2017, 03:12 PM

The only way I would consider it for purchase is if that motor looks the business and I can show beyond doubt that it is as advertised. If they simply took a 100k+ mile drivetrane from the junk yard and stuffed it into the truck for quick sale, then it's likely not worth your time or money.

Go in assuming that it is a 5.3 liter vortec with a 4l60 tranny with 400k miles. Then go about disproving that by finding the correct markings on the engine block ( should be a 6.0 stamped into the block if it is a 6L ), digging into the OBD computer data, finding the case marks on the tranny/rear end and just in general researching how to identify the LQ9 positively as well as determine whether the tranny belongs with that engine.

Examine the frame rails under the hood to make sure no cutting was done to stuff that engine in there.

Then fire that thing up and put your hands on it. It shouldn't feel like it is laboring to idle, missing or doing anything but purring nice and smooth.

Your OBD scanner will tell you whether the codes have been recently reset, which would require a certain amount of driving be done before you can determine if there are any new codes. So you may need to drive it 50 or 100 miles to get the computer to reassess trouble codes from the various components/sensors.

Hth,

-klb

Kennuck · 02-05-2017, 09:58 AM

Like weq92f said check that the frame hasn't been hacked to fit the manifolds or AC pump. If done right there is no need to hack the frame.

jessemthompson · 02-05-2017, 11:00 AM

Take it out for a test drive as well. That will tell you a lot.

Andy4639 · 02-05-2017, 11:58 AM

If it's a Escalade it should be all aluminum engine. No steel! The motor will have the 6.0 stamp on it also as stated.

02-04-2017, 10:26 AM	#1
rex01atv Registered User Join Date: Apr 2007 Location: OR Posts: 198	What to look for when buying 67-72 c10 with LQ9(6.0) swap? Need help I am looking at buying a 72 c10 swb with a already converted 04 Escalade engine/trans installed. What are some things to look for to make sure install was done correctly? Wiring? etc..

02-04-2017, 11:16 AM	#2
clay68c10 Senior Member Join Date: Aug 2004 Location: Centennial, CO Posts: 2,910	Re: What to look for when buying 67-72 c10 with LQ9(6.0) swap? Bring along a generic OBD scanner and see if it has any codes. This will be an indication of how well the swap was done from a programming and wiring standpoint. __________________ ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ

02-04-2017, 03:12 PM	#3
weq92f Registered User Join Date: Oct 2016 Location: Dallas Texas Posts: 2,960	Re: What to look for when buying 67-72 c10 with LQ9(6.0) swap? The only way I would consider it for purchase is if that motor looks the business and I can show beyond doubt that it is as advertised. If they simply took a 100k+ mile drivetrane from the junk yard and stuffed it into the truck for quick sale, then it's likely not worth your time or money. Go in assuming that it is a 5.3 liter vortec with a 4l60 tranny with 400k miles. Then go about disproving that by finding the correct markings on the engine block ( should be a 6.0 stamped into the block if it is a 6L ), digging into the OBD computer data, finding the case marks on the tranny/rear end and just in general researching how to identify the LQ9 positively as well as determine whether the tranny belongs with that engine. Examine the frame rails under the hood to make sure no cutting was done to stuff that engine in there. Then fire that thing up and put your hands on it. It shouldn't feel like it is laboring to idle, missing or doing anything but purring nice and smooth. Your OBD scanner will tell you whether the codes have been recently reset, which would require a certain amount of driving be done before you can determine if there are any new codes. So you may need to drive it 50 or 100 miles to get the computer to reassess trouble codes from the various components/sensors. Hth, -klb __________________ 67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi 07 335 sport turbo 6sp 94 Trans Am GT LT1 6sp posi -- sold after 22yrs 99 540 sport V8 6sp -- sold 73 240z L24 4sp -- given to friend 68 C10 step 350/350 3.73 open -- sold

02-05-2017, 09:58 AM	#4
Kennuck Registered User Join Date: Oct 2013 Location: Dresden, Ontario Posts: 647	Re: What to look for when buying 67-72 c10 with LQ9(6.0) swap? Like weq92f said check that the frame hasn't been hacked to fit the manifolds or AC pump. If done right there is no need to hack the frame. __________________ 1970 Short Wide 5.3 4L60E BlackBear tune 3:73 gears, Boyd's Tank 2.5 / 4 drop 5 lug disc brakes Vintage Air 18x8 Ridlers 255/55 frt. 18x9.5 275/60 rear

02-05-2017, 11:00 AM	#5
jessemthompson Registered User Join Date: Nov 2011 Location: Williamsburg, VA Posts: 956	Re: What to look for when buying 67-72 c10 with LQ9(6.0) swap? Take it out for a test drive as well. That will tell you a lot.

02-05-2017, 11:58 AM	#6
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,936	Re: What to look for when buying 67-72 c10 with LQ9(6.0) swap? If it's a Escalade it should be all aluminum engine. No steel! The motor will have the 6.0 stamp on it also as stated. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.



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