No more needles!
IMO they should last much longer.
The load with a bushing is spread out over a much larger surface area which reduces wear since that contact load is spread out. With a needle bearing the load is concentrated on just a few needles and those same needles are loaded over and over again.
Although the load that the bushing sees is concentrated on the same area over and over again, the key is that it is spread out over a larger area which reduces wear compared to a needle bearing.
One thing I'd also like to mention, anyone using these bushing trunion kits should invest in a good oil that has high amounts of ZDDP. Most of your shelf oils like Royal Purple, Mobile 1, etc. have 800 or less PPM ZDDP. IMO this is not enough to keep a push rod motor happy with higher lift camshafts, more aggressive lobe designs and higher spring pressures. For example, VR1 has 1300 PPM ZDDP and some oils like Brad Penn ($$$) have 2000 PPM or more.
Even if you don't use these bushing trunion kits, IMO if you have an aftermarket camshaft with more lift than stock, aftermarket springs with more spring pressure than stock, or any other internal engine modifications I'd recommend an oil with high levels of ZDDP.
Vavoline VR1 is one of the best oils to use in these situations IMO. I like VR1 because it's cheap ($6.00-$7.50 a quart depending on where you live) and it has worked extremely well in every engine I have used it in.
The load with a bushing is spread out over a much larger surface area which reduces wear since that contact load is spread out. With a needle bearing the load is concentrated on just a few needles and those same needles are loaded over and over again.
Although the load that the bushing sees is concentrated on the same area over and over again, the key is that it is spread out over a larger area which reduces wear compared to a needle bearing.
One thing I'd also like to mention, anyone using these bushing trunion kits should invest in a good oil that has high amounts of ZDDP. Most of your shelf oils like Royal Purple, Mobile 1, etc. have 800 or less PPM ZDDP. IMO this is not enough to keep a push rod motor happy with higher lift camshafts, more aggressive lobe designs and higher spring pressures. For example, VR1 has 1300 PPM ZDDP and some oils like Brad Penn ($$$) have 2000 PPM or more.
Even if you don't use these bushing trunion kits, IMO if you have an aftermarket camshaft with more lift than stock, aftermarket springs with more spring pressure than stock, or any other internal engine modifications I'd recommend an oil with high levels of ZDDP.
Vavoline VR1 is one of the best oils to use in these situations IMO. I like VR1 because it's cheap ($6.00-$7.50 a quart depending on where you live) and it has worked extremely well in every engine I have used it in.
I personally wouldn't run Mobil 1 on a lawn mower, but to each their own.
I ran the non-synthetic VR1 for a while, but it made my valvetrain a bit more "pronounced" let's say.
I swapped back to Castrol Edge 5w30 synthetic and couldn't be happier. It's what I run in everything I own.
I ran the non-synthetic VR1 for a while, but it made my valvetrain a bit more "pronounced" let's say.
I swapped back to Castrol Edge 5w30 synthetic and couldn't be happier. It's what I run in everything I own.
I personally wouldn't run Mobil 1 on a lawn mower, but to each their own.
I ran the non-synthetic VR1 for a while, but it made my valvetrain a bit more "pronounced" let's say.
I swapped back to Castrol Edge 5w30 synthetic and couldn't be happier. It's what I run in everything I own.
I ran the non-synthetic VR1 for a while, but it made my valvetrain a bit more "pronounced" let's say.
I swapped back to Castrol Edge 5w30 synthetic and couldn't be happier. It's what I run in everything I own.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo In a nutshell without derailing this thread, the formula has VASTLY changed since the time FBodies & C5's were produced. The High Mileage stuff is okay though.
If you've never checked out Bobistheoilguy.com trust me, there's a WEALTH of knowledge over there STRICTLY about oil.
If you've never checked out Bobistheoilguy.com trust me, there's a WEALTH of knowledge over there STRICTLY about oil.
In a nutshell without derailing this thread, the formula has VASTLY changed since the time FBodies & C5's were produced. The High Mileage stuff is okay though.
If you've never checked out Bobistheoilguy.com trust me, there's a WEALTH of knowledge over there STRICTLY about oil.
If you've never checked out Bobistheoilguy.com trust me, there's a WEALTH of knowledge over there STRICTLY about oil.
Thread Starter
FormerVendor
iTrader: (2)
Joined: Oct 2015
Posts: 576
Likes: 14
From: Mcleansville, NC
I recommend a minimum of 1000 PPM, and of course anything higher than that is a plus. VR1 has 1200 PPM or more IIRC.
I have had a few inquiries into pre-assembled kits using new rocker arms. I am checking into this currently.