lowblue320

I would like to know how many hours before a rebuild on a 525.....200 hours give or take and about 40%-50% of it is below 2k rpm.....pleaser use.....?

OL40SVX

Probably around 350 to 400. We have 340 I think on ours. We did the top ends about a 100 hrs ago. They still run strong!

lowblue320

thank does any one else have them so that I can get some opinions.

mrhorsepower1

400-500 with proper maint.

Panther

Good time to rebuild the heads with all new parts and new roller lifters... Should be good for another 2-300 more hours with regular maint.!

mikebrls

Lucky Strike Jr

Watch the headers

lowblue320

thanks guys just wanted to do things right.

OL40SVX

Yea that to. They are very leaky!! Where's the pics of the new Motion Lowblue320??? The 525's are a great package for that boat.

Macklin

Just curious, but why do you have almost half your hours below 2K rpms? Lots of no wake zones perhaps??

From what I am told it is not good for marine big blocks to run at low rpm for a large percentage of time.