Bought a motor for my 72 5.3L GenIII - anything i should know? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

JHART · 04-25-2007, 09:48 PM

I just bought a 5.3L GenIII motor that came out of a 03 Silverado. It comes with all the electronics, only 44k miles.

I know i will need the wiring,swap to mech throttle body, ECU re-programed (To remove Emissions and VATS tables), new gas tank (baffled) and a few other things.

You guys think i will need much more?

Oh BTW i got the motor for $1500.00

I think it was a smoking deal!

Any input will be greatly appreciated! I will post pics of the motor when i get her home.

-Hart

pcmcobra · 04-25-2007, 10:22 PM

www.ls1truck.com

good info there.

BowTieOgre · 04-25-2007, 10:29 PM

The only thing I can think of are some new guages. Ask Hart_Rod, he is putting the same engine in his Burb project.

Billy Ol' Blue · 04-25-2007, 10:43 PM

I wouldn't have emm. removed for it. They have trouble run wright.

JHART · 04-25-2007, 10:55 PM

huh??? you mean the VATS?

killer71 · 04-25-2007, 11:12 PM

talk to shifty or read his build up?

JHART · 04-25-2007, 11:17 PM

Will do.

I have read tons of stuff on this type of swap but i was just hoping that someone that has done it before would chime in with some money/time saving info.

Thx for the replies.

killer71 · 04-25-2007, 11:21 PM

well i'm doing the 5.3 as well with the 4L60 e but I'm having it done so I can't help you with time saving info but if you talk with shifty or read his thread it definitely has some great info.

JHART · 04-25-2007, 11:42 PM

I cant find his thread. Anyone have a link?

killer71 · 04-26-2007, 12:11 AM

try this; http://www.ls1tech.com/forums/showthread.php?t=370781

04-25-2007, 09:48 PM	#1
JHART 1972 Shorty Owner Join Date: Feb 2007 Location: Stationed in Cali , born and raised in PHX Arizona. Posts: 796	Bought a motor for my 72 5.3L GenIII - anything i should know? I just bought a 5.3L GenIII motor that came out of a 03 Silverado. It comes with all the electronics, only 44k miles. I know i will need the wiring,swap to mech throttle body, ECU re-programed (To remove Emissions and VATS tables), new gas tank (baffled) and a few other things. You guys think i will need much more? Oh BTW i got the motor for $1500.00 I think it was a smoking deal! Any input will be greatly appreciated! I will post pics of the motor when i get her home. -Hart __________________ 1972 Chevy Shorty C-10- Project In Work http://67-72chevytrucks.com/gallery/...ATT1721941.jpg- New Project

04-25-2007, 10:22 PM	#2
pcmcobra Registered User Join Date: Aug 2006 Location: Florida Posts: 1,684	Re: Bought a motor for my 72 5.3L GenIII - anything i should know? www.ls1truck.com good info there. __________________ 1986 C10 SWB 6.0/6l90e Miami...Flee it like a native

04-25-2007, 10:29 PM	#3
BowTieOgre Registered User Join Date: Mar 2006 Location: Pensacola, FL Posts: 1,461	Re: Bought a motor for my 72 5.3L GenIII - anything i should know? The only thing I can think of are some new guages. Ask Hart_Rod, he is putting the same engine in his Burb project. __________________ 1986 C10 - LWB, 305/700r4, posi, vortec heads

04-25-2007, 10:43 PM	#4
Billy Ol' Blue Registered User Join Date: Apr 2007 Location: Acworth, Ga Posts: 27	Re: Bought a motor for my 72 5.3L GenIII - anything i should know? I wouldn't have emm. removed for it. They have trouble run wright.

04-25-2007, 10:55 PM	#5
JHART 1972 Shorty Owner Join Date: Feb 2007 Location: Stationed in Cali , born and raised in PHX Arizona. Posts: 796	Re: Bought a motor for my 72 5.3L GenIII - anything i should know? huh??? you mean the VATS? __________________ 1972 Chevy Shorty C-10- Project In Work http://67-72chevytrucks.com/gallery/...ATT1721941.jpg- New Project Last edited by JHART; 04-25-2007 at 10:56 PM.

04-25-2007, 11:12 PM	#6
killer71 Registered User Join Date: May 2006 Location: at work Posts: 2,552	Re: Bought a motor for my 72 5.3L GenIII - anything i should know? talk to shifty or read his build up? __________________ R.I.P. Killer 71 10/26/07

04-25-2007, 11:17 PM	#7
JHART 1972 Shorty Owner Join Date: Feb 2007 Location: Stationed in Cali , born and raised in PHX Arizona. Posts: 796	Re: Bought a motor for my 72 5.3L GenIII - anything i should know? Will do. I have read tons of stuff on this type of swap but i was just hoping that someone that has done it before would chime in with some money/time saving info. Thx for the replies. __________________ 1972 Chevy Shorty C-10- Project In Work http://67-72chevytrucks.com/gallery/...ATT1721941.jpg- New Project

04-25-2007, 11:21 PM	#8
killer71 Registered User Join Date: May 2006 Location: at work Posts: 2,552	Re: Bought a motor for my 72 5.3L GenIII - anything i should know? well i'm doing the 5.3 as well with the 4L60 e but I'm having it done so I can't help you with time saving info but if you talk with shifty or read his thread it definitely has some great info. __________________ R.I.P. Killer 71 10/26/07

04-25-2007, 11:42 PM	#9
JHART 1972 Shorty Owner Join Date: Feb 2007 Location: Stationed in Cali , born and raised in PHX Arizona. Posts: 796	Re: Bought a motor for my 72 5.3L GenIII - anything i should know? I cant find his thread. Anyone have a link? __________________ 1972 Chevy Shorty C-10- Project In Work http://67-72chevytrucks.com/gallery/...ATT1721941.jpg- New Project

04-26-2007, 12:11 AM	#10
killer71 Registered User Join Date: May 2006 Location: at work Posts: 2,552	Re: Bought a motor for my 72 5.3L GenIII - anything i should know? try this; http://www.ls1tech.com/forums/showthread.php?t=370781 __________________ R.I.P. Killer 71 10/26/07 Last edited by killer71; 04-26-2007 at 12:15 AM. Reason: other



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