4 barrel LA Intake

My cousin had a 90 360 auto . It was so rich the tail pipe would glow red on the highway. behind the muffler.

We tried everything. Including heads and cam. The truck got better with a 318 throttle body off of a 88 but still was not cured. changed everything electrical. No cure. Was at the dealer several times. The cure ended up being installing a intake and edelbrock carb.

After he died I ended up with the truck. When we tore it down the top rings were so bad they were flush with the pistons.

From then on when the 89 up injected 360 LA motors came to the shop with this problem. They would get pulled and rebuilt with better rings and pistons.

You won't believe the difference in power and ecconomy. Pistons and rings are the downfall of the late LA 360 motors. Not the injection. Do A leak down more than 10% and it won't run right and will be a fuel pig.

Do to the loss of compression on the 360's the easiest thing to do is this.

Change the intake and up the compression with boost. Worked well for me and it would pull a trailer up the mountain half throttle. Ten intake bolts a pulley and a hole in the hood your done.