We stopped using BP years ago. A lot of the Engines that come in for freshen ups that run BP have worn rocker shafts and Piston Pins. We only use Driven Brand Oil, every Big Block we Dyno has BR50 in it. In a lot of our high HP Drag engine we use XP3 after dyno but in most cases the HR series oil is a good choice. We use the 15/50 in our bracket style engines.
Thanks for this info. What oil grade do you recommend for a street strip 505 440 stroker big block, using a solid flat tappet cam, 259/263 @ 050. My 505 engine dyno'd at 620 HP, fun street car. Would you still recommend 15w-50 Driven Engine Oil like bracket type engines, or use 10w-30 or 10w-40 instead? My 505 stroker had really high oil pressure last time I used Brad Penn 20w-50 oil, so I switched to straight 30W Brad Penn. Reading all this makes me a little leary of using BP oil any longer. Your recommendation is appreciated. Thanks.
