Originally Posted by K&ARover (Post 704129)

I used HAR-1019. It was setup for the T56, don't think that matters though, and the rest of the answers were no. Injectors can vary based on what engine you have. They have a little chart to figure out what injectors you have.

Originally Posted by losinov (Post 704226)

Machine shop got started on the initial engine work this week so I went ahead and ordered the new cam and springs for it. After pulling the heads I wasn't too pleased with the state of the cylinders. Even with 130k miles on it I decided to go with a full engine rebuild on my 2004 5.3L LM4 which will make me feel much better about the car's reliability once everything is back together. For those thinking to go a similar route here's what I decided to go with...

1. Upgraded oil pump - SUM-121170
2. Upgraded LS7 lifters and LS2 trays
3. New cam, main and rod bearings
4. New piston rings
5. Honing the cylinders
6. Upgraded timing chain and gears - Cloyes Engine Timing set C-3220
7. Chain dampener (my block has the holes drilled) - Trick Flow® Timing Chain Dampeners TFS-30675540
8. Upgraded camshaft - Brian Tooley Racing Stage 1 truck cam V2
9. Upgraded valve springs - come in the camshaft kit, LS6 Beehive springs
10. Upgraded trunnion kit from Chris Straub
11. Valve job on the existing heads and valves
12. Prep and check the main line bore
13. Drilling the oil dip-stick boss in the block

FYI, machine shop is charging me ~$2400 for the labor, piston rings and 3 bearings sets. That only includes assembly of the short block. That doesn't include assembly of any of the additional parts which will probably be another $1500. End of the day this peace of mind will be worth it to me and I'll have a very unique Land Rover that should hold it's value if I decide to part ways with it in a few years.

Went with Speartech for my engine harness since i'll be tackling the emissions too. That was definitely a pretty penny but their work and customer service is exceptional.

Can't wait to get the kit ordered and finally get everything together hopefully before the end of the year!

Originally Posted by 05TurboS2K (Post 704132)

Ah! Found the chart and thank you for the rest. Ordering now.

Originally Posted by wayumean (Post 704218)

Any people in WA state doing this swap? I am in Lakewood, WA and would like to connect with anyone doing one, my engine is running good for now but I am extremely interested in doing this to my rig for new found reliability. Thank you in advance

Originally Posted by knucklehead_vol (Post 704227)

https://www.powertrainproducts.net/P...hoC__4QAvD_BwE

This produces 400 hp and 400 tq and you can get a 7 year warranty. Of course you would need to beef up the transmission a bit. Also, the ring and pinion are the weak links along with the the driveshafts.

Originally Posted by Friday Night Disco (Post 704230)

wayumean - send 05TurboS2K a message. I believe he is currently doing the swap right now. He is in Redmond but, he needs an extra hand to get his truck on the road before Oct 5th run to Fortune Creek

Originally Posted by 05TurboS2K (Post 704233)

Cool but we don't want that much power, it'll put the rest of the drive train under too much stress for most folks to consider. The stock LM7/LM4 etc. is just about precisely the power that's appropriate for a moderate upgrade.

For the most part folks are agreeing:
4.0 motor =188hp & 250ft/lbs > 4.8L LS motor ~285hp & 295ft/;bs
4.6 motor =222hp & 295ft/lbs > 5.3L LS motor ~300hp & 335ft/lbs

For either engine you start with, these are pretty respectable upgrades in power.