Aluminum Rocker Holddown Set Our billet aluminum rocker holddown sets are fully machined from 6061 T-6 aluminum, blue anodized for good looks, and include 12 point Grade 8 hardware (bolts and washers.) These work great with our aluminum roller rocker sets or most any aftermarket type roller rockers. Compare to Mopar Performance P5249714.
Bolt Kit - Rocker Hold downs - Factory Style USA Made exact reproduction of the factory style rocker hold down brackets and bolts. These have the correct locating tabs on the side just like the factory originals did, to ensure your stock stamped steel rockers have the perfect side clearance when running. Great for replacing worn, missing or damaged originals. We even include grade 8 bolts, which are about 20% stronger than the orignals that the factory used. These are designed to be used along with our 109-1544 factory rocker spacers. One part number includes 3 short brackets and 2 long ones, enough to do ONE SIDE of the engine. For a complete engine, order a quantity of 2 of these kits.
Rocker Shaft .650 Spacers (Set of 8) - New As a compliment to our aluminum roller rocker sets, we recommend these .650 wide spacers which fit between each pair of intake and exhaust rockers and keep the rockers located where they are supposed to be on the shafts.
Rocker Shaft .015 Shims (approx 36) - New With any performance type aftermarket roller rockers, it is necessary to "set up" the valvetrain. Because of different cylinder heads/tolerances/past machine work, etc, the exact positioning of the valves can vary slightly. A large part of setting up a performance valvetrain involves using shims to position the rocker arms at the correct point on the shaft so that the roller tip is exactly centered or aligned over the valve stem tip. We offer these packages of special .015" thick rocker shaft shims for this purpose. They are supplied in packages of approx. 36 per package. We have found some engines to use only one package, but many engines will require two packages, depending on how much "free space" the washers must fill and how tight you wish to adjust the rockers (we recommend .015"-.030" of play.) Use these in conjunction with the correct spacers and shaft holddowns to position the rockers where they need to be. We recommend using these with all of our aftermarket roller rockers, as well as rockers from other aftermarket companies. Not needed with stock stamped type rockers.
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