Big block running hot. Can’t figure out the issue

[nvrenuf]

Not sure what was in it originally, it appears to be the original rad. I ordered a replacement off rockauto

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With only 2 rows and 1-9/16" core thickness, that looks pretty small.

 

[Slooptin]

With only 2 rows and 1-9/16" core thickness, that looks pretty small.

Interesting. I thought it said 4 row on the description. Oddly enough I just slapped a similar radiator in my suburban with a 2-1/4” thick core so if this one is thinner, I might just put it in my suburban and put the suburban radiator in the k30 since they both are 19” tall radiators

 

[mtbadbob]

I believe so. When I burped the system initially it looked like there was fluid flowing once the t stat opened up.

I haven’t paid attention to the lower hose but I’ll check it out. I also don’t suspect the t stat since the new one didn’t change anything.

As far as the water pump, it should be a reverse rotation since the front accessory drive came from a gen 6 motor.

And yeah I made sure to use the right gaskets. Fel pro 508sd I believe.

Thinking I might order another rad cap and make sure the overflow line isn’t plugged too

Yes, the incorrect cap will make it run hot with too much pressure for sure!