SAE-52100 Full complement precision needle and cage roller bearings. Anodized for a superior finish and to reduce operating temperatures. CNC machined pushrod cups and heat-treated Cr40 roller tips.Internal oiling system for long lasting performance. Clears most centerbolt covers (depending on the inside of the cover). CHEVROLET Small Block Gen I. KMJ Maximum Race Series Rockers.
Note in picture the clipped ends of the roller pin. I have seen many sets that are already cracked in the box.We said enough was enough!! If the quality controls were not in place to make sure the rocker arms were not cracked before they went into the box, can you imagine what kind of controls were used in production?
Most wont even handle a moderate hydraulic camshaft. This is because they are die cast out of cheap aluminum instead of a 100% extruded aluminum. We went on a mission to find the highest quality extruded aluminum roller rocker arms available to us. Lots of profit for sellers, but not too profitable for you as the customer!!!
Those of you and there are quite a few of you! As the old saying goes a picture will say 1000 words. Please study the pics very closely; what we are trying to provide you is a comparison of the competitors rocker arms and what we are offering. The captions of the pics will point out the differences. Most other sellers may take wonderful pics of their own and make claims that are in their opinion uncontested.
We want to show you them side by side and then let you make the decision. They are all nice and shiny and take good pics but they are not all equal!
You may recognize them from other listings. Look at the small press-in roller tip pins. The 4th and 5th ones are identical except in color. Remember we had to make them a different color!! Check out the retainer clips on our beefy roller tip pins.
The beefy pin and retainer clips cost more but ensures that at high RPM and pressure that the pins will not work themselves out. If you have raced enough you probably have heard of these pins walking out. Some racers don't even notice that it was the pin that came out that destroyed their engine. They think they simply dropped a valve. Here is what happens with the small press pinned design.The pin comes out and shortly after the rocker arm is simply riding on the spring retainer. The valve tip gets pressed into the area the pin and roller should be. The piston ends up catching up to the valve and smacks the valve possibly breaking the top of the piston or busting the valve and sending it into the head and shortly after you have a fireball. Check out the roller tip oiling holes. The two on the left are OK but they are a little high to ensure proper oiling.
The third one is completely unacceptable as it is highly unlikely it will ever get any oiling. The 4th and 5th ones have the hole in the proper position to ensure that the roller tip and the valve tip get the oil they need to reduce friction and fatigue.
Above is our packaging with a reusable tray. To prevent any delays with your order you should watch for the following common issues. Addresses that only have a PO Box can cause long delays and almost always result with having to credit/cancel the order in the end.If the ord er requires multiple packages someone will need to sign for each one. Some items are not combined due to size or weight such as crankshafts, torque converters, radiators, cylinder heads, etc. Powered by SixBit's eCommerce Solution. The item "SBC Small Block Chevy 350 400 Aluminum Roller Rocker Arms 7/16 Stud 1.5 Ratio" is in sale since Monday, November 29, 2010. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Rocker Arms & Parts". The seller is "kmjperformance" and is located in Story City, Iowa. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Russian federation, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica.