HARRISON'S 5.3L LS CONVERSION PT. 2

Now that the motor was installed for the last time we were able to address the wiring and plumbing.  For the engine wiring and ecu we decided to go with Holley's new EFI system.  The system comes with the engine harness and a new stand alone ecu.  As with any aftermarket harness it comes with all new factory colored wiring and plugs.  The harness is completely independent so it has an integrated fuse box for the ecu and fuel pump powers.  Where the Holley EFI stands apart from the the rest is it's ability to self learn.  Once all of the basic perameters are entered and the car is running, you can put it in learn mode and let the ecu tune itself.    Our 5.3L had a cam, valvetrain, LS6 intake, throttle body, and the MAF was eliminated.  I was new to the software and it took me about 30 minutes to plug in all of the information.  Once I had it loaded the car fired up on the first try.   

The ECU itself is quite compact and was right at home mounted in the glove box. 

HARRISON'S 5.3L LS CONVERSION

We just finished doing another LS conversion in a customer's 1998 240sx.  It was a great project for a great customer.  I will try to cover as much as possible in 3 or 4 write ups.

This job started a little different than most but ending up working out great.  I had a customer, Harrison, who wanted to do an LS motor swap into his 1995 240sx.  His car was completely stock and would need suspension, brakes, and a diff to even make the motor swap logical.  After pricing the motor swap as well as everything else we set a date and would start ordering parts.  That night a good friend of mine stopped by the shop and told me that he was going to get his of his 1998 240sx as well as his 5.3L LS swap.  He had previously planned to do the same build but, being a married man, family came first and we all know how that story goes.

That week I introduced the two, money transferred hands, and Harrison ended up with a newer car.  The 98 240 already had an aftermarket diff, suspension, brakes, and the stock motor had already been pulled.  Now the car just needed to be finished.  

Since we build all of our own motor mounts, we first set the motor in the engine bay and took all of our measurements.