I just recently bought a set of ACL 780 bearings,and thrust washers, what is the Rev limit safe for these bearings? are they duplicate OEM? or ok to 9K???

 

Its the Blue Box sorry....

 

i want to rev to 9K or 9500K safely if possibly doing build currently please help! i dont know if i bought the right ones, the others are for RACE ACL bearings.....they come in a yellow box.....

 

I'm using the blue box bearings on my build, but not sure it they'll be ok @ 9 or 9.5 K.
The yellow race bearings seem to be for race car motors that are torn down often and rebuilt, do they might not be what you're looking for.

 

i used the race bearings in my build and rev them to 9k and have no problems

 

im looking for stree/sport not FUll race. maybe i got the correct ones.....i dunno any Bearing Pros? dotn want to crap one out knwing its oem.....

 

Bump any facts? anyone using to 10K 9.5k? safeley ??

 

not many people build motors that rev to 10k. besides spoon .

 

do you have aftermarket valve springs and retainers?...if not i'd be more weary of valve float then worry about the crank bearings

 

Head and main studs too