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Im person i can barely make them out but he pressure checked them and they were leaking Sent from my SM-G930V using Tapatalk

They are hard to see but that's where they where leaking Sent from my SM-G930V using Tapatalk

Ya considering i broke a crank in it ya it has Sent from my SM-G930V using Tapatalk

Im dropping the new block off at machine shop tonight so im sure i will pick up the junk heads and post some pics. The heads i got with navistar block have a date stamp of 99 so i would guess they are just gm heads Sent from my SM-G930V using Tapatalk

Ya shop wasn't really sure what would cause it. I also found 3 new main web cracks in the old 599, thinking its headed for scrap pile. I did find a sweet deal on a amg optimizer block with a casting of 02 but that will be in a different thread Sent from my SM-G930V using Tapatalk

well got everything torn down and took heads to machine shop he checked them and they are both cracked around the spring seat area, seems like a odd area to crack. these are like 6 year old clear water cylinder head new casting

You talking to me or matuva Sent from my SM-G930V using Tapatalk

Im looking at a truck that is an 89 1500 with a 6.2 so that should be a 599 correct? Sent from my SM-G930V using Tapatalk

Glad you figured it out Sent from my SM-G930V using Tapatalk

ohh boy that might be a bit out of my budget but man they would be nice to have or even a p400 but ill just have to see what I find when I get it out hopefully before the week is over

i was talking with a guy who thinks I may have to have the door modules reprogramed said it can only be done at dealer. any one got any info on that

ok so a friend had a set of mirrors that where wrong for his truck but where the right ones for suburban put them on the other day but they do not do the position memory like the factory ones do. well they move but not like they should they just move every time the key is put in does anyone...

Good idea never thought of that, id really like to put the he351ve on that i have orv maybe if i can swing it an att but budget dosent look good for that Sent from my SM-G930V using Tapatalk

Im a little confused by leroys site are the p400 and optimizer heads sold as a set? Sent from my SM-G930V using Tapatalk

Wasn't planning on it Sent from my SM-G930V using Tapatalk

Who sells them and how expensive, found a guy in iowa with a new set made by serta i think that's what he said a company out of canada for 600. He's an engine builder that used to do alot of 6.5 so had a set on hand but dosent do many any more selling the stock Sent from my SM-G930V using Tapatalk

If it is a cracked heads im pretty disappointed in clearwater since i only got maybe 60k out of these heads Sent from my SM-G930V using Tapatalk

This truck has had 3 nv4500 from the pump surging Sent from my SM-G930V using Tapatalk

For almost a year truck has been slowly loosing coolant couldnt find any leaks and never saw any smoke. Figured i had a small crack into one of the valves as the loss was very slow and never had any signs of water in oil. And havent been using truck much so was bidding my time A couple weeks...

Thanks I just ordered 2 of the last 3 .10 Thicker head gaskets