I race a modified on dirt. I've had a lot of bad luck breaking oil pumps and screens due to harmonics issues on a 383 stroker. I now run a 355 and recently had another oil pump failure. I now have a custom built pick up tube that's 3/8" off the bottom of the pan and is welded to the pump. I just recently installed a special order oil pump that has been machined to take out high rpm harmonics issues. I've been told I am running to heavy an oil (Valvoline racing 50wt) even though I'm in deep south Texas where it's almost always HOT. This motor runs on Methanol and I change the oil every three race nights. Is this frequency OK?
If it makes any difference the 355 has a scat crank, eagle rods, SRP flat top pistons. The heads are Bowtie 205 angle plug that have been angle cut with the tallest edelbrock intake available. Hydraulic cam with solid lift and roller rockers. I was running the Fram HP4 filter but I am now changing over to the WIX racing filter.
Any help would be appreciated.
If it makes any difference the 355 has a scat crank, eagle rods, SRP flat top pistons. The heads are Bowtie 205 angle plug that have been angle cut with the tallest edelbrock intake available. Hydraulic cam with solid lift and roller rockers. I was running the Fram HP4 filter but I am now changing over to the WIX racing filter.
Any help would be appreciated.