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The Proform Aluminium Roller Tip Rocker Arm Kit (1.5:1 ratio) is designed for Small Block Chrysler engines, specifically the 273, 318, 340, and 360 models. This kit includes 16 extruded aluminium roller rocker arms, each featuring a roller needle bearing trunion, which helps reduce internal friction and enhances engine performance. The 1.5:1 ratio is ideal for improving valve timing and increasing horsepower. The blue anodized finish with a laser-etched "P" emblem adds a distinctive look to your engine bay. Hardened shafts and hardware are included, ensuring durability and a secure fit. Please note that mounting bolts are not included; stock bolts should be reused.

These rocker arms are compatible with camshafts up to 0.600 inches lift and are designed for ball/cup style pushrods. The maximum open valve spring pressure should not exceed 500 lbs, and the maximum spring diameter is 1.550 inches. This kit is a suitable upgrade for those looking to enhance the performance and longevity of their Small Block Chrysler engine.

Product Features:

• Compatible with Small Block Chrysler 273, 318, 340, and 360 engines
• 1.5:1 ratio for improved valve timing and horsepower
• Extruded aluminium construction with roller needle bearing trunions
• Blue anodized finish with laser-etched "P" emblem
• Hardened shafts and hardware included; mounting bolts not included