396 427 454 BBC Big Block Chevy Aluminum Roller Rocker Arms 1.7 Ratio 7/16" Stud

Description: ARC ARA45417716 Big Block Chevy Aluminum Roller Rockers 1.70 ratio, 7/16" stud Just released: KMJMaximum Race Series Aluminum Rockers Made from high strength 6061-T6 aluminum extrusions, each piece is precision CNC machined and finished by hand to ensure that our customers receive the very best KMJ has to offer. KMJ stud mount aluminum rockers are specially machined to allow for larger springs and retainers with full-cage friction reducing needle bearings for added durability. The nose rollers and shafts are Cr40 steel, heat-treated and hardened to minimize the wear that naturally occurs between the roller tip and the valve stem. Maximum 650 lbs open spring pressure. As with other KMJ products, these are in-stock for immediate delivery. All KMJ aluminum rockers come complete with poly locks at no additional cost. Designed to meet the demands of most high-lift roller camshaft profiles Specially machined to accommodate larger valve springs and retainers 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 Applications:CHEVROLET Big Block 396 (1966-70), 402 (1970-72), 427 (1966-69), 454 (1970-90) KMJ Maximum Race Series Rockers Part Number Engine Ratio Stud Size Material KMJ ARA45417716 BBC 1.70 7/16" 6061-T6 Aluminum KMJ SRA45417716 BBC 1.70 7/16" 15-5PH Stainless Steel Note in picture the clipped end of the roller pin. All the cheap $100 rocker arms have pressed in pins which are prone to stress cracks that will ultimately result in failure. I have seen many sets that are already cracked in the box. Please read: We at KMJ had been forced for years to sell the junk red and orange die cast rocker arms that have dominated eBay. We said enough was enough!! We were tired of the junk shipped to us by our supplier that was already broken in the box. 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 of the rocker arms being sold by our competitors will not handle anything near the spring pressures and RPM they advertise. 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. We found the manufacturer who manufactures for another very well branded company. They retail their rockers for $238.50 and they come in a different color. To have them manufactured for us at a price we could pass on and be competitive we had to bulk purchase 1000's of sets and make them in a different color. They cost us significantly more than the other junk on eBay. Most the other junk on offered on eBay we can buy for $60-$70 a set. 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!) who do not trust a $100 rocker arm in your $4000 engine, do not worry as you will not find a better aluminum roller rocker arm than what we are offering. Of course at this point you probably think that we are simply blowing smoke in order to get you to pay more for the same pile of crap everyone else is selling. 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! The 1st, 2nd and 3rd rocker arms are sold by our competition for around $100. You may recognize them from other listings. Look at the small press-in roller tip pins. The ones we are selling are the 4th rocker arm in from the left. 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. Who's to blame? The manufacturer of the rocker arm? The engine builder? Our you for thinking for $100 you can get a rocker arm that will withstand the intensive and extreme abuse that a race engine is subjected to. 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.Race engine or Saturday night cruiser, do you really want to save $50 on something that has the potential of costing you $1000's in the end! Above is our packaging with a reuseable tray. Below is our rocker arms sold by our competitors and their packaging KMJ PERFORMANCE - TECH AND RETURNS - Please use the eBay messaging system for any returns or technical assistance MONDAY-FRIDAY: 8:00AM-5:00PM SATURDAYS: 8:00AM-4:30PM (CST)Click on store image to view our current listings of High Performance Products! Payment: Please make payment within 7 days of purchase. Paypal and Visa/MC/Discover credit card payments are accepted. Please use the eBay message system if you have any questions or need assistance. PAYPAL PAYMENTS - The majority of Paypal payments can be processed within 2-3 hours after received during our normal weekday business times. To prevent any delays with your order you should watch for the following common issues: Be sure your shipping address has a physical address that Fedex/UPS can deliver to. 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. You should be able to add one onto your payment when going through the payment process. Be sure the shipping address is correct when making payment. Shipments will go to the address that comes through on the payment. Within a short time it may be already shipped and on the way. Some of our listings may request a "note to seller" to let us know if you have a certain preference or need a specific thing such things as sizes, colors, etc. Putting a note on your Paypal payment is the best way to insure it should not be missed. In order to comply with Paypal's buyer/seller protection policy, any (single) payment having a total of $750 or more must be sent with signature confirmation on delivery. This applies to all packages that may be associated with the payment. If the order requires multiple packages someone will need to sign for each one. If you find there is any problem with your payment or order we recommend calling us during normal business hours if at all possible. If you miss us during regular hours you can leave a voice mail message on our phone system. While we do our best to keep up with eBay messages, during times of heavy volume an order can get processed and shipped before we're able to get through them all to stop or change an order. Shipping: Unless a listing is set up that allows calculated shipping for other locations, the shipping amount given for an item will be ground shipping to the lower 48 states only. We do not offer any next day, air freight, or other expedited services on eBay orders. We try and combine EBay auctions when possible. Normally it will be the highest shipping amount plus half the shipping amount on other items, sometimes better on orders of small items. Some items are not combined due to size or weight such as crankshafts, torque converters, radiators, cylinder heads, etc. On multiple item purchases the shipping amount is not figured automatically during checkout so please request a new invoice or wait for us to send a combined invoice so we can adjust the total. We may have auctions that state free shipping when purchased with certain items. If purchasing items with free shipping, please request a new invoice before paying. The shipping amount is not figured automatically during checkout. We are unable to refund your Paypal once payment has been sent. If you have any doubt what your shipping will be please feel free to message us during business hours. Powered by SixBit's eCommerce Solution

Price: 169.99 USD

Location: Story City, Iowa

End Time: 2024-08-30T00:56:27.000Z

Shipping Cost: 0 USD