When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
under 260WHP nothing really, ARP headstuds and porting and reshimming the oil pump.... There is a thread out there on how to do it...
Not really, as for most typical setups would be above 180-190 wtq with that horsepower level. Stock rods can't handle much more than that. The commonly accepted whp level is 220-230 at the most to maintain reliability. This of course assumes you have ARP head studs to back up the pressures required to get to this level with the assumed turbo sizes. While stock D-series oil pumps aren't the best, most basic applications do NOT require any modification. I am not sure why you say all this stuff.
When you get down to it, like Grumble said, this thread lacks the information needed to answer the OP's question.