That looks like a factory trans cooler using not factory mounts.
I have some factory lines from the green truck, I'll see if they're a fit for this cooler, this one is definitely bigger than what came on the '99 K1500.
I'd rotate that trans cooler 90° so the hoses aren't stretched.
Is the o-ring for that trans cooler fitting still in the trans cooler? I'd put new o-rings on when you reinstall unless they look perfect.
You'll need to grind the chamfer off the end of your 30mm socket down so it won't slip on that thin nut on the EVO.
Oh those hoses are going right into the trash, I'll be redoing the entire trans cooler mount and hoses situation.
I don't think it had o-rings on it lol. I'm not going to use whatever those adapters were, ideally I'd have -6AN male coming out of this cooler.
Thanks for the tip on the socket. What a pain for such a minor feature.
I got to work on cleaning the engine up a bit. It was leaking oil from the valve covers, probably oil pan, definitely oil cooler lines, and also front and rear china walls. Hard to tell if the timing cover was leaking as well but rear main at least was dry. The buildup was pretty intense in places, I had to start off by scraping. I used simple green, a drill brush, and a steam cleaner about twice everywhere after scraping and that got it reasonably clean while not making a huge mess in my garage.
Popped the intake off, minor sludge buildup but not crazy:
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I dropped the TPI setup in the valley to check fitment issues. This is the old lower for L98 heads so it doesn't bolt up but I aligned the injectors with the intake ports and it's enough to see what's going to be a problem:
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F-body fuel rail rams right into the accessory bracket. Absolutely no room for the adapters or -AN fittings.
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Thermostat housing hits the stud. That can be clearanced out easily.
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Bypass tube wants to go where the fuel rails are.
Two options come to mind; I can bore fuel hose clearance through the accessory bracket, or I can change up the fuel rails. I'm thinking it would be nice to have the fuel lines come in from the back anyway, so I might go that route and free up space for the external coolant bypass at the same time.