Chevy Small Block Race Fit 8.2mm Thundervolt Sleeved Spark Plug Wire Set with Over Valve Cover HEI Fitment

Features & Benefits

Our sleeved wire sets deliver the same proven performance as our legendary ThunderVolt® 8.2 wires, enhanced with an integrated high‑temperature, silicone‑impregnated fiberglass sleeving for superior heat protection.

This built‑in sleeving eliminates the need for additional heat protection and is engineered for extreme racing environments where added abrasion resistance and voltage insulation are critical. Each wire features shrink tubing at both ends to ensure a secure wire‑to‑boot seal, and clearly marked cylinder numbers to eliminate firing order mistakes during installation.

Race Fit wires arrive cut to exact length and fully terminated — boots and terminals installed on both ends, ready to drop straight in. Note that lengths are optimized for the chosen routing path; if you're running a fixed loom or an alternate wire path, fitment may vary. An extra-long coil wire is also included, one end fully prepped and the other left open so you can trim to length and finish with the boot and terminal to your high-performance coil of choice.

• For Chevy Small Block Engines; sized to be routed over the valve cover and terminated for HEI distributors
• Spark Plug Wire Lengths (inches): 8 cylinders - 38, 34, 31, 31, 25, 23, 23, 23, coil 36
• 90° spark plug boot angle
• Silicone inner core provides added heat protection and superior flexibility throughout its lifetime
• 40 ohms per foot
• Highly conductive stainless steel spiral wound core
• RFI / EMI suppression for applications with CD or electronic ignitions, on board computers, stereos or pit radios
• High‑temp silicone‑impregnated fiberglass sleeving
• No additional sleeving required
• Excellent abrasion and voltage insulation
• Shrink tubing for a secure wire‑to‑boot seal
• Cylinder‑numbered wires for easy installation