# Engine Swap **URL:** \ **Category:** General Discussion\ **Tags:** gmc\ **Created:** [January 22, 2013, 4:42am UTC](https://community.cartalk.com/t/engine-swap/76845 "2013-01-22T04:42:24Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Terrell](https://avatars.discourse-cdn.com/v4/letter/t/bc79bd/32.png) [@Terrell](https://community.cartalk.com/u/Terrell)\ **Post date:** [January 22, 2013, 4:42am UTC](https://community.cartalk.com/t/engine-swap/76845/1 "2013-01-22T04:42:24Z")
Will a 2003 Suburban engine fit in a 1995 Suburban? ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [January 22, 2013, 4:52am UTC](https://community.cartalk.com/t/engine-swap/76845/2 "2013-01-22T04:52:14Z")
With all of the computer changes, fuel system, engine sensors, etc, it’d be quite a bit of work, and may prevent you from passing any inspection, if you can get it to work. ---
**Author:** ![oldbodyman](https://avatars.discourse-cdn.com/v4/letter/o/bbce88/32.png) [@oldbodyman](https://community.cartalk.com/u/oldbodyman)\ **Post date:** [January 22, 2013, 5:14am UTC](https://community.cartalk.com/t/engine-swap/76845/3 "2013-01-22T05:14:37Z")
Yes it will fit. Will it work? Maybe,and thats a big maybe. What you have to do is call paineless wire or a company like them. They will tell what it would take to wire it right. you all computers and engine contors. Now that being said. The cost of just the wire harness would be more than a rebulid engine of the right year. ---
**Author:** ![Stoveguyy](https://avatars.discourse-cdn.com/v4/letter/s/9e8a1a/32.png) [@Stoveguyy](https://community.cartalk.com/u/Stoveguyy)\ **Post date:** [January 22, 2013, 5:29am UTC](https://community.cartalk.com/t/engine-swap/76845/4 "2013-01-22T05:29:33Z")
The 03 is an LS style motor. The 95 is a vortec motor. Older generation. Very different motors. No it will not work. ---
**Author:** ![ken\_green](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/ken_green/32/816_2.png) [@ken\_green](https://community.cartalk.com/u/ken_green)\ **Post date:** [January 22, 2013, 5:39am UTC](https://community.cartalk.com/t/engine-swap/76845/5 "2013-01-22T05:39:45Z")
My rebuilder says NO. But if…IF you’re getting a used one, lock, stock and barrel…maybe. Computer’s different, a major stumbling block. ---
**Author:** ![Caddyman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/caddyman/32/23_2.png) [@Caddyman](https://community.cartalk.com/u/Caddyman)\ **Post date:** [January 22, 2013, 6:24am UTC](https://community.cartalk.com/t/engine-swap/76845/6 "2013-01-22T06:24:13Z")
If you are subject to emissions testing, forget it…You will NEVER get that CEL to go off…8 years is just too big a jump…Everything is different… ---
**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\ **Post date:** [January 22, 2013, 7:13am UTC](https://community.cartalk.com/t/engine-swap/76845/7 "2013-01-22T07:13:49Z")
@Terrell can we assume that you have a 1995 Suburban with a bad/tired engine, and you’ve got a lead on a 2003 engine? If the 1995 Suburban is running and in good shape, leave it alone. If you start this project, you may never finish it. And if you do, you’ll have all sorts of wiring problems, or it won’t start, or you’ll need a custom exhaust, or you’ll get all sorts of DTCs, or it won’t even pass the visual inspection at the smog station, etc. ---
**Author:** ![jtsanders](https://avatars.discourse-cdn.com/v4/letter/j/c2a13f/32.png) [@jtsanders](https://community.cartalk.com/u/jtsanders)\ **Post date:** [January 22, 2013, 7:24am UTC](https://community.cartalk.com/t/engine-swap/76845/8 "2013-01-22T07:24:51Z")
I imagine that it would work if you moved the engine and all electronics, including sensors and wiring harnesses, from the 2003 to the 1995. That sounds like a lot of work. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [January 22, 2013, 7:51am UTC](https://community.cartalk.com/t/engine-swap/76845/9 "2013-01-22T07:51:42Z")
Besides a major engine change, there was a new chassis between the two, so lots of things won’t match up. Just find a '95 engine, shouldn’t be too hard. Try [car-parts.com](http://car-parts.com) ---
**Author:** ![asemaster](https://avatars.discourse-cdn.com/v4/letter/a/5f9b8f/32.png) [@asemaster](https://community.cartalk.com/u/asemaster)\ **Post date:** [January 22, 2013, 8:17am UTC](https://community.cartalk.com/t/engine-swap/76845/10 "2013-01-22T08:17:06Z")
In case there’s still any question…No, it won’t. ---
**Author:** ![mark9207](https://avatars.discourse-cdn.com/v4/letter/m/71c47a/32.png) [@mark9207](https://community.cartalk.com/u/mark9207)\ **Post date:** [January 22, 2013, 8:21am UTC](https://community.cartalk.com/t/engine-swap/76845/11 "2013-01-22T08:21:39Z")
The '95 will have a TBI 350 in it. Those are common as dirt. The 2003 has the LS 5.3L, which is a completely different engine. Just find one of the bajillion center bolt valve cover TBI 350s and put it in. ---
**Author:** ![kmccune](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/kmccune/32/1237_2.png) [@kmccune](https://community.cartalk.com/u/kmccune)\ **Post date:** [January 22, 2013, 4:20pm UTC](https://community.cartalk.com/t/engine-swap/76845/12 "2013-01-22T16:20:40Z")
Rebuild it and make a stroker out of it (383) cid-Kevin ---
**Author:** ![Stoveguyy](https://avatars.discourse-cdn.com/v4/letter/s/9e8a1a/32.png) [@Stoveguyy](https://community.cartalk.com/u/Stoveguyy)\ **Post date:** [January 22, 2013, 7:38pm UTC](https://community.cartalk.com/t/engine-swap/76845/13 "2013-01-22T19:38:46Z")
Or dump the 95 and get a newer, 03 rig? Much nicer ride. ---
**Author:** ![ken\_green](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/ken_green/32/816_2.png) [@ken\_green](https://community.cartalk.com/u/ken_green)\ **Post date:** [January 22, 2013, 9:05pm UTC](https://community.cartalk.com/t/engine-swap/76845/14 "2013-01-22T21:05:43Z")
Sure wish the OP would answer back as to their reason for wondering. Anything’s possible with enough money. Modifiers and customizers are putting chevy 350s in all manner of vehicles from Jeeps to VW beetles…BUT… at what expense and parts list ? ---
**Author:** ![kmccune](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/kmccune/32/1237_2.png) [@kmccune](https://community.cartalk.com/u/kmccune)\ **Post date:** [January 25, 2013, 6:12pm UTC](https://community.cartalk.com/t/engine-swap/76845/15 "2013-01-25T18:12:31Z")
Again ,I say rebuild and upgrade,lot of potential there-Kevin ---
**Author:** ![Stoveguyy](https://avatars.discourse-cdn.com/v4/letter/s/9e8a1a/32.png) [@Stoveguyy](https://community.cartalk.com/u/Stoveguyy)\ **Post date:** [January 25, 2013, 8:15pm UTC](https://community.cartalk.com/t/engine-swap/76845/16 "2013-01-25T20:15:54Z")
He wonders if a LS motor will work in a non-LS rig. I think he found a cheap, low mileage LS motor and wants to know if it will drop in with minimal work? NO. Quit talking about fixing up the original motor. He is not asking about that. ---
**Author:** ![kmccune](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/kmccune/32/1237_2.png) [@kmccune](https://community.cartalk.com/u/kmccune)\ **Post date:** [January 25, 2013, 10:22pm UTC](https://community.cartalk.com/t/engine-swap/76845/17 "2013-01-25T22:22:15Z")
Dont think the LS is the same, is the old motor a Vortec,all I know is when you start swapping motors you are asking for trouble,the computer and wiring harness will be different ,just to name a few things,the fuel pump may even be different,Just dont get excited trying to save the man some headaches-Kevin ---
**Author:** ![FoDaddy](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/fodaddy/32/717_2.png) [@FoDaddy](https://community.cartalk.com/u/FoDaddy)\ **Post date:** [January 26, 2013, 2:17am UTC](https://community.cartalk.com/t/engine-swap/76845/18 "2013-01-26T02:17:25Z")
Actually the LT1-based Vortec V8’s didn’t show up in the trucks until 1996. The OP has the wheezey TBI 350, it’s pretty lethargic in the Suburban. A 1996-1999 Vortec 350 would be a good upgrade. The Vortec V8’s had multiport fuel injection. The L05 the OP’s vehicle has throttle body injection. ---
**Author:** ![kmccune](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/kmccune/32/1237_2.png) [@kmccune](https://community.cartalk.com/u/kmccune)\ **Post date:** [January 26, 2013, 6:26am UTC](https://community.cartalk.com/t/engine-swap/76845/19 "2013-01-26T06:26:26Z")
So the computer would be different on the Vortec? -Kevin ---
**Author:** ![FoDaddy](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/fodaddy/32/717_2.png) [@FoDaddy](https://community.cartalk.com/u/FoDaddy)\ **Post date:** [January 26, 2013, 9:06am UTC](https://community.cartalk.com/t/engine-swap/76845/20 "2013-01-26T09:06:37Z")
@kmccune, yes, the ECU would definitely be different on a Vortec 5700 (that’s what they called it) vs. the TBI 5.7L. [Next page](https://community.cartalk.com/t/engine-swap/76845.md?page=2)