Gen 3 to Gen 4 Silverado swap
04-18-2023, 09:44 AM
#21
Pull crank and replace reluctor wheel. Switch to GTO timing cover for the correct cam sensor.
Ignition coils do not change should be plug and play.
Personally I would be swapping the intake for a taller/truck style intake for a couple of reasons. 1) You can find them relatively cheap if used factory 2) Make more low end torque 3) If a factory intake it is easier to find DBC adapters to hold the cables. 4) Can use the truck FEAD 5) Makes it easier to hook up to stock airbox if desired
All of that would be cheaper than changing the entire front FEAD
It would probably fit I am not sure. It is probably more shallow than the truck pan but you can always just pull your old pan off and put it on if it does not work.
MailOrderTuner is a good remote tuner he will do that for you. I would just wait to get the remote tune done. Yes it will have enough vacuum to run power brakes.
Ignition coils do not change should be plug and play.
Personally I would be swapping the intake for a taller/truck style intake for a couple of reasons. 1) You can find them relatively cheap if used factory 2) Make more low end torque 3) If a factory intake it is easier to find DBC adapters to hold the cables. 4) Can use the truck FEAD 5) Makes it easier to hook up to stock airbox if desired
All of that would be cheaper than changing the entire front FEAD
It would probably fit I am not sure. It is probably more shallow than the truck pan but you can always just pull your old pan off and put it on if it does not work.
MailOrderTuner is a good remote tuner he will do that for you. I would just wait to get the remote tune done. Yes it will have enough vacuum to run power brakes.
If you pull the truck oil pan off you will need the pickup tube also.
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strutaeng (04-18-2023)
04-18-2023, 09:49 AM
#22
TECH Veteran
Ah didn't know it had the correct timing cover.
Good point on pickup tube.
Good point on pickup tube.
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strutaeng (04-18-2023)
04-18-2023, 10:07 AM
#24
Stay away from the lingenfelter 58x to 24x box. It will leave you stranded and the cranking times get longer and longer for some reason before they crap out.
https://www.holley.com/products/fuel...parts/860004-1
https://www.holley.com/products/fuel...s/parts/20-147
Ign Coils use the same connector so thats not an issue.
Truck accessories will fit with the LS3 intake but some modifications need to be alternator bracket to clear the throttle body.
Oil pan will clear with room to spare.
If your going to go with that engine why not just use a Holley ECU? It will make tuning whatever you get substantially easier.
Also if your going with that 525hp LS3 i hope your not planning on running the stock torque converter.
https://www.holley.com/products/fuel...parts/860004-1
https://www.holley.com/products/fuel...s/parts/20-147
Ign Coils use the same connector so thats not an issue.
Truck accessories will fit with the LS3 intake but some modifications need to be alternator bracket to clear the throttle body.
Oil pan will clear with room to spare.
If your going to go with that engine why not just use a Holley ECU? It will make tuning whatever you get substantially easier.
Also if your going with that 525hp LS3 i hope your not planning on running the stock torque converter.
As far as the Holley ECU, I've heard that it can be made to run the stock gauges via piggybacking the stock ecu into those connections but I'm not sure I want to open that can of worms.
04-18-2023, 10:19 AM
#25
Will the balancer that comes on that engine line up with the truck accessory drive? I'm thinking about doing the 4wd 6l70e with a higher stall converter: https://www.chevrolet.com/performanc...ur-wheel-drive
As far as the Holley ECU, I've heard that it can be made to run the stock gauges via piggybacking the stock ecu into those connections but I'm not sure I want to open that can of worms.
As far as the Holley ECU, I've heard that it can be made to run the stock gauges via piggybacking the stock ecu into those connections but I'm not sure I want to open that can of worms.
If it is the camaro balancer it aligns with the truck accessories. If its the corvette balancer it wont.
You will need to call Circle D or Yank or some torque converter manufacture and tell them the specs of the engine and truck to get the converter you need.
Yea its very easy to piggy back the stock ECU to the Holley. But if you want easy... https://www.currentperformance.com/s...ation-harness/
04-18-2023, 10:24 AM
#26
TECH Resident
Upgrade to a 4L80e while you're in there! 🙊🙈🙉
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strutaeng (04-18-2023)
04-18-2023, 10:33 AM
#28
TECH Resident
That makes the swap a bit more involved swapping the TC input shaft and driveshaft length issue (?), right? What about the transfer case cross member? My 99 ECSB 4L80e swap was pretty straightforward, but it's a 2wd.🙄
Edit: sorry OP for detailing the thread into transmission talk... 🤦
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strutaeng (04-18-2023)
04-19-2023, 08:55 AM
#30
The Plan
Ok, here's what I've come up with:
https://www.summitracing.com/parts/mll-psls3760ctfk
https://www.summitracing.com/parts/hly-20-147
https://www.summitracing.com/parts/icb-wainj32
https://www.summitracing.com/parts/sne-860004-1
https://www.summitracing.com/parts/nal-19259117
https://www.summitracing.com/parts/h...1500/year/2000
https://www.monstertransmission.com/...l#.ZD_sN3bMJaQ
Based on your advice and my research I believe the following. Correct me if I'm wrong or you see any errors!
Physically, the engine should fit. The transmission should bolt into the truck, connect to the transfer case etc. and the stall converter should be ok with the engine (1800-2300). My truck (ECM) should be able to run the engine and trans with a tune once I swap the throttle body, add the cable adapter and connect the injectors with the adapter. I will need to either swap the cam and crank trigger or get a converter box. The alternator that comes with the front drive kit should also work. I'm not entirely sure about the A/C and P/S though as there weren't many details on them.
What issues do you guys see? I'm thinking this is the easiest/most foolproof way for me to do this myself without needing a bunch of support which doesn't exist locally!
https://www.summitracing.com/parts/mll-psls3760ctfk
https://www.summitracing.com/parts/hly-20-147
https://www.summitracing.com/parts/icb-wainj32
https://www.summitracing.com/parts/sne-860004-1
https://www.summitracing.com/parts/nal-19259117
https://www.summitracing.com/parts/h...1500/year/2000
https://www.monstertransmission.com/...l#.ZD_sN3bMJaQ
Based on your advice and my research I believe the following. Correct me if I'm wrong or you see any errors!
Physically, the engine should fit. The transmission should bolt into the truck, connect to the transfer case etc. and the stall converter should be ok with the engine (1800-2300). My truck (ECM) should be able to run the engine and trans with a tune once I swap the throttle body, add the cable adapter and connect the injectors with the adapter. I will need to either swap the cam and crank trigger or get a converter box. The alternator that comes with the front drive kit should also work. I'm not entirely sure about the A/C and P/S though as there weren't many details on them.
What issues do you guys see? I'm thinking this is the easiest/most foolproof way for me to do this myself without needing a bunch of support which doesn't exist locally!