fast engine question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**old Rusty C10** · 02-02-2017, 09:34 PM

My son has a 2003 flex fuel 4wd suburban with about 195K on the 5.3 motor . the motor is bad we have access to a 2000 Chevy Silverado that has a non flex fuel 5.3 are these interchangeable and what else do we need to loot from the pickup to make the suburban run right?

68c10airstream · 02-02-2017, 10:31 PM

You will obviously be using the 2003 complete intake assy on the 2000 motor. The 2000 motor i believe has an egr pipe coming off of the passenger exhaust manifold. Does the 2003 have it also???

When i replaced my 2001 5.3 block the new gm bare block 5.3 fit 99-2006 if i remember correctly.

Do you have a plug in at the front timing cover area on the 2003?? This would be for variable valve timing at the nose of the camshaft area and when gm went to this system they no longer needed egr. (the pipe on the rh manifold)

With the intake manifold removed from both engines it will be obvious what systems are present.

crazy longhorn · 03-16-2017, 07:28 PM

Quote:

Originally Posted by 68c10airstream

You will obviously be using the 2003 complete intake assy on the 2000 motor. The 2000 motor i believe has an egr pipe coming off of the passenger exhaust manifold. Does the 2003 have it also???

When i replaced my 2001 5.3 block the new gm bare block 5.3 fit 99-2006 if i remember correctly.

Do you have a plug in at the front timing cover area on the 2003?? This would be for variable valve timing at the nose of the camshaft area and when gm went to this system they no longer needed egr. (the pipe on the rh manifold)

With the intake manifold removed from both engines it will be obvious what systems are present.

Yes, 99- 06, should fit the bill. The VVT was later, so if you use all the intake/ect off your 03, you should be ok, as mentioned. I have an 06 5.3 flex fuel engine (my spare)...but to note, it has the same crank/cam sensors as the 2000, that I run in my longhorn (cam sensor in the top rear of the block)

Longhorn

**old Rusty C10** · 02-03-2017, 05:51 PM

my son blew the motor in his 03 burb we are trying to find a used motor so just looking around at what we can find

02-02-2017, 09:34 PM	#1
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,310	fast engine question My son has a 2003 flex fuel 4wd suburban with about 195K on the 5.3 motor . the motor is bad we have access to a 2000 Chevy Silverado that has a non flex fuel 5.3 are these interchangeable and what else do we need to loot from the pickup to make the suburban run right? __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

02-02-2017, 10:31 PM	#2
68c10airstream Registered User Join Date: Mar 2013 Location: Marquette michigan Posts: 828	Re: fast engine question You will obviously be using the 2003 complete intake assy on the 2000 motor. The 2000 motor i believe has an egr pipe coming off of the passenger exhaust manifold. Does the 2003 have it also??? When i replaced my 2001 5.3 block the new gm bare block 5.3 fit 99-2006 if i remember correctly. Do you have a plug in at the front timing cover area on the 2003?? This would be for variable valve timing at the nose of the camshaft area and when gm went to this system they no longer needed egr. (the pipe on the rh manifold) With the intake manifold removed from both engines it will be obvious what systems are present.

02-03-2017, 05:51 PM	#4
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,310	Re: fast engine question my son blew the motor in his 03 burb we are trying to find a used motor so just looking around at what we can find __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

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