Early planning ls swap in my 69

[Crusty69]

I have a 69 long bed that has a 400 sbc that was swapped in around 72 if I had to guess. I’ve had the truck about 5 years and it’s driven a lot. I’m burning tons of oil and reliability just isn’t what I’d like it to be.

The goal is a smooth DD that I can pull out 3-4 times a week.

Going with tanks inc tank with 255 lph pump
Stock 6.0 lq4 or similar whenever I can find it. Will do a mild cam swap and nothing else.

Speed engineering headers

Haven’t even looked into mounts yet, what do you guys like?
Planning 4l80e for the strength over 4l60e and wanting overdrive. Currently a 3 speed truck.

Should I stick with gm ecu or go Holley?

Will all the truck accessories work without moving them? Planning to run a/c with the new setup.

How does integration with the factory gauges go?


I’m sure these questions have been answered but trying to consolidate my info and maybe have a place to document as I do this. I plan on buying everything up front and doing it all over a weekend or two.