LS1 to LS2 427 swap
LS1 to LS2 427 swap I'm swapping out a 2001 LS1 out of my 67 Nova for a LS2 based Darton sleeved 427. L92 heads.
I will retain the 4L60E and wiring harness/computer.
The 427 has a 24 tooth reluctor wheel rotating assembly.
I changed the cam shaft gear to a LS2 type.
Changed the timing cover to a front cam sensor and pig tail harness.
I'm using a LS3 intake so I have new pig tails and connectors for the injectors.
Lengthened the MAP, knock and cam sensor wiring harness.
Swapped the front pulley over from the LS1.
Added a LS3 valley cover that has the PCV assembly underneath and o-ring seals for the displacement on demand is blocked off.
New cable style throttle body 4 bolt style.
What else am missng?
I will retain the 4L60E and wiring harness/computer.
The 427 has a 24 tooth reluctor wheel rotating assembly.
I changed the cam shaft gear to a LS2 type.
Changed the timing cover to a front cam sensor and pig tail harness.
I'm using a LS3 intake so I have new pig tails and connectors for the injectors.
Lengthened the MAP, knock and cam sensor wiring harness.
Swapped the front pulley over from the LS1.
Added a LS3 valley cover that has the PCV assembly underneath and o-ring seals for the displacement on demand is blocked off.
New cable style throttle body 4 bolt style.
What else am missng?
I think on the MAP you have to cut and swap the outer two wires. Guessing you know about the drill/ tap block for knock sensors.
Did ls2s have DoD?
Edit - It's the cam sensor you switch the wires on, not the map.
Did ls2s have DoD?
Edit - It's the cam sensor you switch the wires on, not the map.
Last edited by chuckd71; Feb 15, 2012 at 03:29 AM.
Some people run the knock sensors to other tapped holes low on the block as they are already tapped correctly for the LS1 Knock sensors.
Jon
PSI
Jon
PSI
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It's LS2 block. It does have the towers in the lifter valley for the DOD. The LS3 valley cover has the o-ring detents to seal off the DOD oil ports.
I need to check the block. I assumed that there would be holes to mount the two LS2 knock sensors on either side.
The tuner will modify the current computer to get it close. Then I will bring it in for a chassis dyno tune.
I will check with Howell on the cam sensor wiring. I got all of the extensions from them. They did the original harness.
Thanks for the help.
I need to check the block. I assumed that there would be holes to mount the two LS2 knock sensors on either side.
The tuner will modify the current computer to get it close. Then I will bring it in for a chassis dyno tune.
I will check with Howell on the cam sensor wiring. I got all of the extensions from them. They did the original harness.
Thanks for the help.
Teching In
Joined: Apr 2010
Posts: 18
Likes: 0
From: Rhode Island
Does the 24x LS2 run the single wire style knock sensors? I' thinking about doing a swap like this myself, and can't decide if its worth all the extra work to get an E38 ECM working correctly or sticking with the '411 PCM.
JSLEZAK83,
The 24X LS2 would have been an E40 controller and would require 2 wire Knock Sensors. If you were going to run the 411, you would have to switch to 1 wire LS1 Knock Sensors. The LS1 Sensors have a larger thread than the LS2 sensors, so you have to either drill and tap the stock LS2 Knock Sensor locations or find another location for the sensors on the block.
Jon
PSI
The 24X LS2 would have been an E40 controller and would require 2 wire Knock Sensors. If you were going to run the 411, you would have to switch to 1 wire LS1 Knock Sensors. The LS1 Sensors have a larger thread than the LS2 sensors, so you have to either drill and tap the stock LS2 Knock Sensor locations or find another location for the sensors on the block.
Jon
PSI
__________________
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www.psiconversion.com
Ebay Store
Facebook/psiconversion
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'Dont Let EFI Pass You By!'
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www.psiconversion.com
Ebay Store
Facebook/psiconversion
Instagram/psiconversion
'Dont Let EFI Pass You By!'
Trending Topics
My 427 combo with the 24 tooth assembly may seem a little strange but the my current 4L60E is a FLT level three trans and I didn't want buy a separate trans controller if I changed to a 58 tooth assembly or use some type of conversion box.
Engine is scratch built from a bare block so I could use whatever I wanted.
Engine is scratch built from a bare block so I could use whatever I wanted.
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