Tomei PROCAM Camshaft Sets | 1989-2002 Nissan Skyline GT-R (TA301A-NS05E)
SHIPPING - RETURNS - WARRANTY - CANCELLATION POLICY
*** Market Conditions after 2020 have changed the landscape of automotive parts. Although we try to stock 1000's of items in our multiple warehouse and use multiple distribution channels, having back-orders are unavoidable in today's market. If you are in need of a product quickly, we suggest email, message, or call us for availability so that we may explore your options.
Email: Sales@Speedzoneweb.com
Call: 407-846-8430
Text: 407-749-6314
Frequently Asked Questions
SKU: TOM TA301A-NS05E
VALC Profile ProCam Camshafts by Tomei
The Velocity, Acceleration, Lift and Control (VALC) profile allows the valves to open faster and for longer. This translates to faster lift and increased area under the 'lift curve', which in turn generates more power. Unlike the valve opening, the VALC profile ensures that the valves close at a slower rate, helping to prevent common valve train related issues.
With a conventional direct-acting valve train, the maximum lift is usually determined by the size/diameter of the valve lifter. Selecting a high-lift camshaft without taking this into consideration often results in the camshaft lobes travelling beyond the surface of the valve lifter. This causes the lobe to make contact with the edge of the lifter, damaging both components over time. Therefore, the ideal performance orientated high-lift camshaft needs to have a profile that maximizes lobe travel on the lifter without exceeding the outer edge. VALC profile camshafts have achieved this ideal by deliberately reducing the maximum cam velocity to limit lobe travel on the lifter surface. Compared to standard profile camshafts of the same lift, VALC profile camshafts are able to then then off-set the difference for even greater lift/performance gains.
Machining each lobe to the strictest tolerances allows for smoother and more precise adjustments in valve clearances. Strict phase angle tolerances minimizes the risk of valve timing issues and ensures each valve opens and closes precisely. Our research showed that some camshafts from other manufacturers had more than 5 degrees difference in the phase angle! This makes it near impossible to achieve the correct valve timing.
Features
- Designed for high power setups
- VALC Profile design
- Reduced stress/wear on the valve train
- Higher lift than other profiles of the duration
Why Heavy Duty Steel over Aluminum?
Tomei ProCam Camshafts require Tomei Type-A/Type-B Valve springs for installation (P/Ns 173001 and 173002). Tomei Valve Lifters are also required (P/N TA307A-NSO5A).
Applications
- 1989 - 2002 Nissan Skyline GT-R
- SEE 'PLEASE NOTE' SECTION
Specifications
- Duration: 272deg to 292deg
- Max Cam Lift: 10.25mm to 11.50mm
- Cold Valve Clearance (IN): 0.45mm
- Cold Valve Clearance (EX): 0.38mm
- Valve Timing Center Line (IN): 110deg
- Valve Timing Center Line (EX): 115deg
- Base Circle: 30.0
What's In The Box?
- 1 - ProCam Exhaust Camshaft
- 1 - ProCam Intake Camshaft
- Necessary Hardware (if applicable)
- Instructions/Manuals (if applicable)
- Warranty Information
Warranty
Tomei Limited Warranty
Our History
For 23 years Speedzone Performance LLC has been providing aftermarket car parts to Central Floridians and 1000's of customers online. What makes us different than all the other places online? We have 3 actual brick and mortar locations where were serve customers daily and find new ways to provide support and assistance to the automotive community at large. From our in house SPDZ1 Brand, to our constantly growing in stock inventory, we strive to make our customer service and ease of purchase stand out from the rest! We are also one of the largest automotive part financing providers anywhere in the United States, and continue to provide more options for our customers every year. We love what we do, and it shows in every product we sell and every new customer who becomes a part of our Speedzone Family.