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These are solutions that make sense concerning the issue. I will work on fuel delivery and go from there. Im excited to get to work on this solution. All of you guys are awesome, thank you!

I wondered that about the precups, I was having a hard time fathoming how such small size differences would make a difference. Im not really set on replacing them unless it would fix my issue. The pickup doesnt really black smoke bad at all, it black smokes just a bit under the hardest...

Hey guys, its been a while since my last post, but you were all so helpful in the past I figured I would try again. I have the same pickup, 1995 K2500 Ext Cab, SWB, 4WD, Auto. I had installed an Optimizer 6500 a couple years ago and just moved everything from the old engine to the new one...

I finally found a good step by step procedure. My initial base timing was 1.5 instead of the desired 3.5 degrees. Then once that was set with the tool I went ahead and set the TDC relearn and got it to -.70. It already starts much better. Just gotta check out real life MPGs and throttle...

Is there a thread for that procedure?

Hey folks, got my 6.5 optimizer in a couple months ago, got it installed and it runs decent. I had swapped my old injectors and IP to this new engine(mostly because they didn't have many miles on them since I replaced them last) while the engine was out I did new motor mounts, new flex plate...

Has it done okay for you? Easy to work with overall?

Curious as to the best bang for your buck in regards to scan programs for my 6.5? Ill be swapping my DS4 IP to a new engine soon and I'll need to be able to time it. So I need something easy to use, accurate and useful. I have a good laptop and obd1 connector for it.(whole set up from OBD...

Any hope for the DS4 rebuilds like Quadstar is doing? I do want to keep my truck, especially considering my investment in the new engine. I will start to keep my eye out for a mechanical pump and footpedal just for the future. What is the recommended db2 pump number for a turbo 6.5?

Well I pulled the trigger and Leroy ordered me a new Optimizer 6500. Looking forward to this new engine. Specs say that these are 20.2:1 compression ratio, just a bit down from a normal 6.5 at 21.5:1 right? Curious if that'll be noticeable as far as cold startup and overall performance? I would...

Wreckinball67, out of curiosity did you do any other upgrades to the 6.5 from peninsular? How many miles do you have on the new engine?

Gotcha, both are just higher than I want to spend right now, but I may have to bite the bullet for the better engine. Unless there is a different route to go all together. Thank you for your prompt responses

I've done business with Leroy Diesel and been happy also. Their prices seem to be competitive on the optimizer long blocks. Any experience on longevity from either source? I'm just not sure where they source their engines, dont want to make a bad investment.

Hey there, I grew up running around in an 82 6.2 diesel and have been around these old diesels ever since. Always have really enjoyed them. Good to see a community of others that use these old work horses as well. I have been running Ole Maroon for 7 years now. She is a 95 K2500 6 lug/4l80e...