Anyone here done a Gen IV swap?
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RE: Anyone here done a Gen IV swap? - 4/11/2007 6:28:20 AM
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drperry
Posts: 3896
Joined: 1/12/2007
From: GP AB CA
Status: online
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As soon as I can scrape the money together, my Blazer is probably getting a 5.3 with Active Fuel Management...
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RE: Anyone here done a Gen IV swap? - 4/11/2007 8:31:03 AM
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drperry
Posts: 3896
Joined: 1/12/2007
From: GP AB CA
Status: online
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Well, I know with the 5.3, the only drive train problem I might have will be in the transmission, t-case, and front diff...
The rear diff will be fine, as it's the same one in the Camaro/Firebirds...
I don't plan on souping the nuts off the engine, so...
In my head, all the electronics should be almost plug and play (my Hypertech programer can also do 5.3 of the same years of 4.3's) Might have to change some stuff on the tach, but the o2 sensors should be fine, and all I really need to do is get the PCM from the same vehicle the engine came out of...
I'm sure reality will be MUCH different, but I can hope, right? lol
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RE: Anyone here done a Gen IV swap? - 4/11/2007 9:00:54 AM
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swartlkk
Posts: 14308
Joined: 5/1/2005
From: Waterloo, NY
Status: offline
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While the PCM may be able to be flashed to the proper code, your engine bay wiring harness will be all wrong. You will want to get the complete harness, disassemble it, and graft in your existing harness for those things which won't be changing and may not be the same connections as in the 5.3L harness (O2 sensor locations, possibly the transmission/transfer case connections, etc).
As far as the drivetrain, don't worry about it until you break something. If you're drag racing it, then you may want to build them up, but if it's just your DD, I wouldn't worry until something happens. People are dropping v8s into s-series vehicles all the time using the v6 transmission which is what I consider to be the weakest link. If you are atleast prepared for the possibility of needing replacement, then you're ahead of the game. Also, if you don't beat on it, you should also be ok for quite a while.
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Kyle-
2004 Rainier
1970 Chevelle - Resto
1974 K5 Blazer - Resto
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RE: Anyone here done a Gen IV swap? - 4/11/2007 9:27:06 AM
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drperry
Posts: 3896
Joined: 1/12/2007
From: GP AB CA
Status: online
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Yeah, I kinda figured it wasn't going to be that easy, lol.
I think the hardest part is the electronics...
The physical installation is the easiest... If you can get all the parts, lol.
Hopefully I can get a built up 5 speed, if mine takes a dump...
I wonder if any of the 4.3 accessories will bolt up to the 5.3... I know the water pump won't, but maybe the alternator, a/c and power steering will... lol
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RE: Anyone here done a Gen IV swap? - 4/11/2007 12:33:14 PM
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lastcoupe
Posts: 1137
Joined: 7/27/2006
Status: offline
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Nope sorry DR, but nothing from a 4.3 will fit a 5.3. If either of you are actually going to do this hit a salvage yard and buy the COMPLETE engine trans and electrical harnesses with computer. Then it's just a matter of fitment and you take all of the electronic work out of it. I was working on a design for buiding a dual engine 4WD rail job, and planning on using 2 super-charged 3800's from late-model pontiacs and I found a complete drivetrain with engine support,engine,trans, wiring, PCM, axles,hubs,struts,rack etc...for $1100.00 If I ever get to do it, it will be a blast 500 HP, 1200 lbs, 4wd and 4 wheel steering....woooooohooooooo!
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