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
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