M Series - Stage 1 high performance cams available for BMW's S58
engine. These are suitable for engines producing around 600-850hp with
bolt on intake, exhaust and turbo upgrades, and running a 60-68mm turbo.
- Camshafts still maintain full use of Valvetronic and Dual VANOS for good throttle response and wide power band.
- It is important to also upgrade your valve springs, and we recommend the KVS58-BT valve spring upgrade.
292°/280° | 10.40mm/10.60mm
Stage 2
racing cams for professionally built BMW S58 engines that can deliver
800hp to 1400hp with 66-75mm turbo sizing and aftermarket intake
plenums.The cams enable full use of Valvetronic and Dual VANOS while
allowing you to lock Valvetronic when using an aftermarket throttle
body.
- Please check valve-to-piston clearances on full travel of VANOS and Valvetronic
- Upgrade valve springs with Kelford Cams' KVS58-BT
- Ensure the clearance of the new racing cam lobe with the intake
intermediate rockers and trim or deburr OEM pressed steel rockers if
necessary.
298°/292° | 10.40mm/10.80mm
Kelford Cams recommends using Stage 3 drag racing cams for S58
engines that are professionally built and capable of making over 1400hp.
If you plan on using high boost and 76mm+ turbo sizing, then you should
be using either ethanol blend or methanol fuel.
- It's important to upgrade your valve springs, KVS58-BT is the recommended option.
- Additionally, please double-check clearance for the new racing cam lobe with your intake intermediate rockers.
- If you're using OEM pressed steel rockers, be sure to deburr them to avoid any issues with fouling on the larger cam lobe.
All Kelford camshafts are manufactured to a very high grade and set of tolerances to ensure the customer will receive a part that is not only the best for performance, but also excellent for longevity and reliability.
Every camshaft passes through multiple quality control stages and receives a unique laser engraved QC identifier to ensure our team can accurately assist you with any questions you may have of your product. Kelford Cams exist to unleash your engine's power at any build level.
Tech Notes:
VAC recommends pairing these cams with
High Performance Valve Springs. This ensures our customers always get the most reliability from their engine by helping to prevent piston-to-valve contact in the event of an over-rev or mis-shift.
All camshafts must be installed by a professional, who can check piston to valve clearances and valve seal clearances.
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