S&S, 84-91 crankcase assembly, 3-5/8" bore. Natural
S&S Superstock™ crankcases; made from 356-T6 aluminum; are much stronger than the OEM case. OEM cases can/may break in high performance or even stock applications; like more than a few of us found out the hard way. These S&S Superstock™ cases can be used for both stock replacement and racing applications. Important to the engine builder are the substantial savings in labor when using S&S cases. These cases come ''set up'' with sprocket shaft Timken main bearing races and cam needle bearings installed and pinion shaft main bearing race pressed in and line-honed. Additional parts that are supplied include Timken sprocket shaft bearings; cylinder studs; nickel plated case bolts; crankcase fittings; oil pressure sensor; timing & magnetic crankcase drain plugs and a special S&S design alternator stator plug clamp screw. The flywheel scrapers are machined to match the original 8-1/2" diameter flywheels. S&S cases maximize crankcase oil scavenging efficiency by using a ''ported'' design breather passageway. S&S cases are clearanced up to and including 5"; no additional clearancing for strokers will be necessary. S&S cases come complete with assembly instructions. Note: For 84-E85 Evo Big Twin models you must use a L85-91 style cylinder head bolt kit. These can be ordered separately as MCS 505266 (Gardner-Westcott) or 989599 (Colony) in standard lengths only. Note: The aluminum H-D oil pump; (26190-73) or the S&S oil pump; MCS 519923; can be used in 70-91 applications. Note: In a
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Compatibility
You can verify compatibility in two ways:
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- Review the fitment table for the full list of compatible models and years.
Some parts may require additional components, modifications or a specific existing setup. Always read the fitment notes and product description before ordering.
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- unused and uninstalled;
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