[Solarpowered]

Hi all, I wanted to stop by and ask about ways to increase the fuel efficiency of a GM 5.3L v8. My old 5.7L 350 is worn out, and I want to replace it with a more modern, better engine. It will be going in a 1987 Chevy Silverado.

I don't really trust junkyard engines, so I'm going to have a reputable engine builder put the 5.3L together for me. So why not have him use parts that increase efficiency? Here's my rough list of things that may increase the fuel economy of the 5.3L engine.


1. Lighter connecting rods
2. Better roller rockers Aluminum
3. Lighter crankshaft? Aluminum
4. Good oil cooler with thermostat
5. Good trans cooler too, also with thermostat
6. Electric water pump
7. Electric fans
8. Electric power steering?
9. More efficient alternator
10. High flow oil pump with bigger better filtration system
11. Canceled - Bad idea.
12. Lighter better flywheel?
13. Aluminum or carbon fiber driveshaft
14. Long tube headers and good exhaust system
15. Floating pin pistons
16. Internally balanced. The crank itself is balanced, and does not need a harmonic balancer or balanced flywheel? Seems like less rotating mass if no harmonic balancer
17. Cancelled - bad idea
18. Better pistons and rings somehow?
19. The usual heads, cam, and intake upgrade - if this can increase efficiency
20. A "tune" for fuel economy
21. E3 spark plugs
22. Upgraded ignition system?

I tried posting this earlier, but I think it glitched and didn't post my thread. Hopefully two threads don't appear.