Anyone had this ?
I have my new World block 505ci in and running . But it does run warmer than my factory 440 and 505 . Maybe 15-20F .
Cooling system has never been an issue . I just swapped in a 2nd waterpump to which I welded a anti cavitation plate , I did have a 440 source pump in when I ftted motor .
Just the thicker block ?
Its not a worry at the moment but noticeable .

Tex


New best ET 10.259@129.65 .
New best MPH 130.32
Finally fitted a solid cam,
stepped it up a bit more
3690lbs through the mufflers
New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm
Power by Tex's Automotive