Originally Posted by Rage (Post 2892917)

You know, that makes total sense to me. However when I discussed this with Hardin Marine tech people thay said that they tested both ways and found zero difference in the drop in oil temperature in temp minus out temp. Also another seasoned engine builder said the same thing. Mine is currently parrallel flow but I may try the reverse flow (a more difficult plumbing problem for my install) since I am running out of inexpensive things to try.

Originally Posted by Pismo10 (Post 2893937)

Countercurrent flow is a fundamental law of thermodynamics and nature. In other words, it has to make a difference. The degree of that difference is the question. Worth a try I would think. Concurrent flow cannot remove more than 50% of the heat at best, usually much less, countercurrent can remove 95%.

Originally Posted by Rage (Post 2888401)

I have a (non Whippled) 496 with similar horse power and a big oil temperature problem at WOT even after extensive modifications to improve the situation. I am looking for any Whippled 496 owners that do not have an oil temperature problem when running at WOT for extended period to learn what works.

Originally Posted by crayolacrazy (Post 2891760)

I have whippled 496 ,s they make 800 hp all coolers stock ,except my heat exchanger is 5 inch I start to see oil temps after 7to 10 miles at 96 to 100 mph then I run negative boost for about a mile temps come right down lean on again things happen fast at that speed I have to pay attention I watch my temp gage more when it starts to rise over 150 I go negative I also run 120 thermostats

Originally Posted by SDFever (Post 2891423)

One other thing - - Are you measuring your temp coming out of the block or going in (after the oil cooler)? Mine reads around 200+ going in but closer to 300 coming out.