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Super-chicken
12-17-2009, 05:56 PM
I found a 95 sc motor to replace my junk motor in my 92. My question is do i need to change any of the harness or is it a straight swap out? Thanks for your help.

fastsc92
12-17-2009, 07:17 PM
The 94-95 motors use a different crank set-up. The 89-93 models use a hall effect sensor with 3 vanes, whereas the 94-95 models use a variable reluctance sensor with 36-1 trigger teeth. You'll have to swap crank sensors and balancers in order for it to work. Everything else should be straight forward though.

Tim Groth
12-17-2009, 08:38 PM
The 94-95 motors use a different crank set-up. The 89-93 models use a hall effect sensor with 3 vanes, whereas the 94-95 models use a variable reluctance sensor with 36-1 trigger teeth. You'll have to swap crank sensors and balancers in order for it to work. Everything else should be straight forward though.

The 94-95 front cover is also different because of what was just mentioned. The trigger ring is the main issue due to the difference in balancer. Just swap your front cover with the 95 motor and you'll be ready to go.

Everything is a direct mount and swap. Over the summer 1 put a 93 SC motor in a 94SC and it was easy sailin once the cover swap was completed.

-Tim

fastsc92
12-17-2009, 08:50 PM
The 94-95 front cover is also different because of what was just mentioned. The trigger ring is the main issue due to the difference in balancer. Just swap your front cover with the 95 motor and you'll be ready to go.

Everything is a direct mount and swap. Over the summer 1 put a 93 SC motor in a 94SC and it was easy sailin once the cover swap was completed.

-Tim

It's my understanding that the cover on a 94-95 motor has both provisions for mounting either style crank sensor, therefore, he shouldn't have to swap it out. Now if he was putting a 89-93 motor in a 94-95, then he would have to swap.

Randall Burnett
12-17-2009, 10:00 PM
It's my understanding that the cover on a 94-95 motor has both provisions for mounting either style crank sensor, therefore, he shouldn't have to swap it out. Now if he was putting a 89-93 motor in a 94-95, then he would have to swap.

Yes, I agree. I have found the 94-95 cover has the provision for either crank sensor.

Randall

Super-chicken
12-19-2009, 01:02 PM
Thanks for all the the advice. Looks like the swap out is going to start on Monday. Lucky for me the garage is slow right now.

SCrazy
12-20-2009, 09:09 PM
I think there are a number of sensors that are slightly different. O2, knock, crank etc I would double check all of them to be certain.

Super-chicken
12-20-2009, 11:32 PM
I going to swap the whole harness over and change sensors as needed.

David Neibert
12-22-2009, 01:38 PM
It's my understanding that the cover on a 94-95 motor has both provisions for mounting either style crank sensor, therefore, he shouldn't have to swap it out. Now if he was putting a 89-93 motor in a 94-95, then he would have to swap.

Correct, 89-93 Crank sensor mounts to the block, 94-95 mounts to the timing cover. Just needs to use an 89-93 balancer (BHJ prefered) and swap all sensors from the old to new motor.

David