Good point! I’m thinking not so much friction, but extreme pressure, such as a rear axle ring and pinion, they have EP additives. The friction is gone from it being a roller now, BUT there’s the wheel under tremendous pressure from the valve springs, and mine is only 330 lbs over the nose, others have 500 plus I don’t want to play scientist here, but what about the oils that are recommended in the newer cars with 500 hp and up?? Those engines rev to 6/7 grand with hydraulic roller cams BUT their valve springs are beehive I’m assuming, which require less pressure to control the valve motions verses our old school cylindrical style springs. EHHHH, a quart of 80/90 gear oil should do it, it’s got EP additives in it
That's a mirror pic of lobe to rod corner clearance. Abt 3-4k miles on that cam in that pic. I ran 325 open also, up to 335 now. At least if there's no indentations on lobe from rollers (like a soft cam) you should be good.
yep 10-30w Joe Gibbs Driven oil bought me a case of it last time I visited Summit. The BR oil for break in of cam did its job on that. Highly recommended
It’s Friday eve, grass is cut, I’m dripping wet, I plan on being in the garage by 6:30 am Saturday to drop ‘er in, or just be in the garage It stays bearable till about 2 or 3 pm, then the heat lamp starts blasting in the garage door.
Going to change the power valve today going to have to get out the 2.5 Kent Blues fest today/tonight near Kent State 27 bands all free. Been waiting to get out on the road those batards did poor mans gravel and still have rocks everywhere.
I had to do that with my other Holley, my 413 cam only made 5/6 inches of vacuum at idle in gear, it seemed to make a difference. Have fun if you go see those bands Take pics of hot, drunk college girls, LOLOL
I have been running NGK UR4 plugs, no issues with my last build. Im thinking I should still be ok with that plug with my slight increase in compression ( .5 or so) NGK says if it was running fine with the current heat range, then you add power, not until you add 75 to 100 or more HP should a heat range nead adjusted. So imma think I’ll be fine with the UR4. The lower number with NGK plugs is hotter, correct?
