5.3 into 87 tbi truck
 

Everything is in and I'm at the part where I hook up the wiring to make it run I'm not too wire savy so I'm asking where do I hook up these wireshttps://goo.gl/photos/qQmjzMCQA4GKgguC7

Re: 5.3 into 87 tbi truck
 

Fuel pump wire ignition constant and keyed etc

Re: 5.3 into 87 tbi truck
 

I suggest looking in the Engine & Drivetrain forum under LSx swaps. Lots of good info there. Another excellent source is LS swapped Square Body on Facebook. Scotty has a lot of great reading pinned there.

Re: 5.3 into 87 tbi truck
 

Highly recommend this site: http://lt1swap.com/

Very informative ans walks you through the rewire process.

He also did my PCM reprogram.

Re: 5.3 into 87 tbi truck
 

Are you using a stock harness or a standalone harness?
I'm currently in the middle of an Lq4 4l80E swap into my 87 Formerly TBI Suburban.
I'm done with my wiring and figured out where to hook into on the stock TBI wires.
I'm using a standalone harness from LSX4U which has made the wiring easy.
Tell me what wires your looking for on the TBI harness and I may be able to help.
All of the wires I've tapped into we're at the bulkhead connector on the driver's side.

Re: 5.3 into 87 tbi truck
 

A guy in Topeka was running a deal on Craigslist for a rework and flash vats etc 12v constant,12v key and fuel pump 12v

Re: 5.3 into 87 tbi truck
 

I read some of your thread nice burb and the D gauges are nice as well all help with this is appreciated the wait to hear this thing run is agonising

Re: 5.3 into 87 tbi truck
 

Re: 5.3 into 87 tbi truck