{"title":"Valve Spring Height Gauges","description":null,"products":[{"product_id":"pac-racing-springs-height-mic-1-400-to-2-000-ls-dual-retainers","title":"PAC Racing Springs Height Mic — 1.400 to 2.000 LS Dual Retainers","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout PAC Racing Springs\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003ePAC Racing Springs engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full PAC Racing Springs lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/-RU_rJQJnrA\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003ePrecision Valve Spring Height Measurement\u003c\/h2\u003e\u003cp\u003eAchieving the correct installed height is critical for any high-performance engine build. The PAC Racing Height Mic (1.400 to 2.000 range) is the professional's choice for measuring valve spring installed height with absolute accuracy. Designed specifically for LS dual spring applications, this tool allows you to dial in your valvetrain geometry, ensuring optimal spring pressure and preventing coil bind.\u003c\/p\u003e\u003ch3\u003eTool Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRange: 1.400 in to 2.000 in\u003c\/li\u003e\n\u003cli\u003eScale: 0.001 in increments\u003c\/li\u003e\n\u003cli\u003eFinish: Purple Anodized\u003c\/li\u003e\n\u003cli\u003eCompatibility: LS Dual Spring Setups\u003c\/li\u003e\n\u003cli\u003eConstruction: Precision CNC Machined\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis height mic features a clear, easy-to-read scale that provides 0.001-inch precision, allowing for meticulous adjustments. The purple anodized finish not only looks great in your toolbox but also provides a durable, corrosion-resistant surface. Whether you are setting up a street-strip engine or a dedicated race motor, this tool is indispensable for verifying that your valve springs are operating within their intended range. By using the right tools, you can avoid costly engine damage and maximize performance. Get your precision engine tools today at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular PAC Racing Springs products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pac-racing-springs-1-260-single-valve-spring-w-damper-1pk\" style=\"color:#0066cc;text-decoration:none;\"\u003ePAC Racing Springs 1200 Series 1.260 OD Single Valve Spring w\/Damper — High-Performance Ci\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pac-racing-springs-1-550-dual-valve-spring\" style=\"color:#0066cc;text-decoration:none;\"\u003ePAC Racing Springs 1200 Series 1.550 OD Dual Valve Spring — High-Output Drag Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pac-racing-springs-1-260-single-valve-spring-w-damper-1pk-1\" style=\"color:#0066cc;text-decoration:none;\"\u003ePAC Racing Springs 1200 Series 1.260 OD Single Valve Spring w\/Damper — Circle Track Perfor\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pac-racing-springs-1-645-triple-valve-spring-1pk\" style=\"color:#0066cc;text-decoration:none;\"\u003ePAC Racing Springs 1200 Series 1.645 OD Triple Valve Spring — Extreme Drag Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pac-racing-springs-1-025-valve-spring-ovate-beehive\" style=\"color:#0066cc;text-decoration:none;\"\u003ePAC Racing Springs 1200 Series 1.025 OD Ovate Beehive Valve Spring — High-Efficiency Perfo\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"PAC Racing Springs Height Mic \\u2014 1.400 to 2.000 LS Dual Retainers\",\"description\":\"Measure your valve spring installed height accurately with the PAC Racing Height Mic. Perfect for LS dual spring setups. Shop precision tools at GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"PAC Racing Springs\"},\"mpn\":\"PAC-T904\",\"url\":\"https:\/\/ggcracing.com\/products\/pac-racing-springs-height-mic-1-400-to-2-000-ls-dual-retainers\",\"offers\":{\"@type\":\"Offer\",\"price\":\"176.36\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/pac-racing-springs-height-mic-1-400-to-2-000-ls-dual-retainers\",\"sku\":\"DHDL_PAC-T904\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Suspension\",\"item\":\"https:\/\/ggcracing.com\/collections\/suspension\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"PAC Racing Springs\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=PAC+Racing+Springs\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"PAC Racing Springs Height Mic \\u2014 1.400 to 2.000 LS Dual Retainers\",\"item\":\"https:\/\/ggcracing.com\/products\/pac-racing-springs-height-mic-1-400-to-2-000-ls-dual-retainers\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the PAC Racing Springs Height Mic \\u2014 1.400 to 2.000 LS Dual Retainers fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for PAC Racing Springs?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the PAC Racing Springs Height Mic \\u2014 1.400 to 2.000 LS Dual Retainers?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Suspension work requires proper spring compressors and torque specs. Plan 2-4 hours per corner for a DIY install.\"}}]}\u003c\/script\u003e","brand":"PAC Racing Springs","offers":[{"title":"Default Title","offer_id":41366255272020,"sku":"DHDL_PAC-T904","price":176.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/PACPAC-T904.jpg?v=1719608321"},{"product_id":"pac-racing-springs-height-mic-1-800-to-2-600","title":"PAC Racing Springs Height Mic — 1.800 to 2.600 Range","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout PAC Racing Springs\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003ePAC Racing Springs engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full PAC Racing Springs lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/-RU_rJQJnrA\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eProfessional Valve Spring Height Gauge\u003c\/h2\u003e\u003cp\u003eProper valve spring installation height is the foundation of a reliable, high-performing valvetrain. The PAC Racing Height Mic (1.800 to 2.600 range) offers the precision required for high-end engine builds. This tool is essential for verifying that your valve springs are installed at the correct height, which is vital for maintaining the correct seat pressure and preventing catastrophic valvetrain failure.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRange: 1.800 in to 2.600 in\u003c\/li\u003e\n\u003cli\u003eScale: 0.001 in precision\u003c\/li\u003e\n\u003cli\u003eFinish: Red Anodized\u003c\/li\u003e\n\u003cli\u003eApplication: Universal High-Performance\u003c\/li\u003e\n\u003cli\u003eDurable Construction\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWith a measurement range of 1.800 to 2.600 inches, this gauge is versatile enough for a wide variety of cylinder head configurations. The 0.001-inch scale ensures that you can make precise adjustments to your spring shims or retainers. The red anodized finish provides a professional look and protects the tool from the harsh environment of a busy engine shop. Investing in a quality height mic is one of the best ways to ensure your engine build meets its performance goals. Trust GGCRACING for all your precision engine measurement needs.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular PAC Racing Springs products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pac-racing-springs-1-260-single-valve-spring-w-damper-1pk\" style=\"color:#0066cc;text-decoration:none;\"\u003ePAC Racing Springs 1200 Series 1.260 OD Single Valve Spring w\/Damper — High-Performance Ci\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pac-racing-springs-1-550-dual-valve-spring\" style=\"color:#0066cc;text-decoration:none;\"\u003ePAC Racing Springs 1200 Series 1.550 OD Dual Valve Spring — High-Output Drag Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pac-racing-springs-1-260-single-valve-spring-w-damper-1pk-1\" style=\"color:#0066cc;text-decoration:none;\"\u003ePAC Racing Springs 1200 Series 1.260 OD Single Valve Spring w\/Damper — Circle Track Perfor\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pac-racing-springs-1-645-triple-valve-spring-1pk\" style=\"color:#0066cc;text-decoration:none;\"\u003ePAC Racing Springs 1200 Series 1.645 OD Triple Valve Spring — Extreme Drag Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pac-racing-springs-1-025-valve-spring-ovate-beehive\" style=\"color:#0066cc;text-decoration:none;\"\u003ePAC Racing Springs 1200 Series 1.025 OD Ovate Beehive Valve Spring — High-Efficiency Perfo\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"PAC Racing Springs Height Mic \\u2014 1.800 to 2.600 Range\",\"description\":\"Ensure perfect valve spring installation with the PAC Racing Height Mic. 1.800-2.600 range for precision engine building. Get yours today at GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"PAC Racing Springs\"},\"mpn\":\"PAC-T902\",\"url\":\"https:\/\/ggcracing.com\/products\/pac-racing-springs-height-mic-1-800-to-2-600\",\"offers\":{\"@type\":\"Offer\",\"price\":\"176.36\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/pac-racing-springs-height-mic-1-800-to-2-600\",\"sku\":\"DHDL_PAC-T902\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Suspension\",\"item\":\"https:\/\/ggcracing.com\/collections\/suspension\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"PAC Racing Springs\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=PAC+Racing+Springs\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"PAC Racing Springs Height Mic \\u2014 1.800 to 2.600 Range\",\"item\":\"https:\/\/ggcracing.com\/products\/pac-racing-springs-height-mic-1-800-to-2-600\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the PAC Racing Springs Height Mic \\u2014 1.800 to 2.600 Range fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for PAC Racing Springs?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the PAC Racing Springs Height Mic \\u2014 1.800 to 2.600 Range?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Suspension work requires proper spring compressors and torque specs. Plan 2-4 hours per corner for a DIY install.\"}}]}\u003c\/script\u003e","brand":"PAC Racing Springs","offers":[{"title":"Default Title","offer_id":41366261235796,"sku":"DHDL_PAC-T902","price":176.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/PACPAC-T902.jpg?v=1719608504"},{"product_id":"pac-racing-springs-height-mic-1-400-to-2-000","title":"PAC Racing Springs T901 Height Micrometer 1.400-2.000 Range — Precision Engine Tool","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout PAC Racing Springs\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003ePAC Racing Springs engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full PAC Racing Springs lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003ePrecision Valve Spring Setup with PAC Racing\u003c\/h2\u003e\u003cp\u003eAchieving the perfect installed height is critical for valvetrain longevity and peak engine performance. The \u003cstrong\u003ePAC Racing Springs T901 Height Micrometer\u003c\/strong\u003e is the professional-grade tool designed to take the guesswork out of your engine build. Engineered for versatility, this gauge covers a range of 1.400 to 2.000 inches, making it an essential addition to any high-performance machine shop or DIY enthusiast's toolbox.\u003c\/p\u003e\u003ch3\u003eKey Features and Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Measurement Range:\u003c\/strong\u003e Accommodates heights from 1.400\" to 2.000\" for diverse cylinder head configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Accuracy:\u003c\/strong\u003e Features a precise 0.001\" scale to ensure your spring pressures are perfectly balanced across all cylinders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Finished in a signature blue anodized coating for high visibility and corrosion resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Application:\u003c\/strong\u003e Specifically designed to work seamlessly with both standard and beehive spring profiles.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you are performing a routine valve job or a full race engine overhaul, the T901 provides the repeatable accuracy required to prevent coil bind and ensure optimal spring seat pressure. Its intuitive design allows for quick, reliable measurements, saving you time during the assembly process. Trust the experts at GGCRACING to provide the high-quality precision tools needed to keep your engine running at its absolute best.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular PAC Racing Springs products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pac-racing-springs-1-260-single-valve-spring-w-damper-1pk\" style=\"color:#0066cc;text-decoration:none;\"\u003ePAC Racing Springs 1200 Series 1.260 OD Single Valve Spring w\/Damper — High-Performance Ci\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pac-racing-springs-1-550-dual-valve-spring\" style=\"color:#0066cc;text-decoration:none;\"\u003ePAC Racing Springs 1200 Series 1.550 OD Dual Valve Spring — High-Output Drag Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pac-racing-springs-1-260-single-valve-spring-w-damper-1pk-1\" style=\"color:#0066cc;text-decoration:none;\"\u003ePAC Racing Springs 1200 Series 1.260 OD Single Valve Spring w\/Damper — Circle Track Perfor\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pac-racing-springs-1-645-triple-valve-spring-1pk\" style=\"color:#0066cc;text-decoration:none;\"\u003ePAC Racing Springs 1200 Series 1.645 OD Triple Valve Spring — Extreme Drag Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pac-racing-springs-1-025-valve-spring-ovate-beehive\" style=\"color:#0066cc;text-decoration:none;\"\u003ePAC Racing Springs 1200 Series 1.025 OD Ovate Beehive Valve Spring — High-Efficiency Perfo\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"PAC Racing Springs T901 Height Micrometer 1.400-2.000 Range \\u2014 Precision Engine Tool\",\"description\":\"Ensure precise valve train setup with the PAC Racing Springs T901 height micrometer. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for PAC Racing Springs?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the PAC Racing Springs T901 Height Micrometer 1.400-2.000 Range \\u2014 Precision Engine T?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Suspension work requires proper spring compressors and torque specs. Plan 2-4 hours per corner for a DIY install.\"}}]}\u003c\/script\u003e","brand":"PAC Racing Springs","offers":[{"title":"Default Title","offer_id":41366261563476,"sku":"DHDL_PAC-T901","price":176.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/PACPAC-T901.jpg?v=1719608522"},{"product_id":"pac-racing-springs-height-mic-1-400-to-1-900","title":"PAC Racing Springs T903 Valve Spring Height Micrometer — 1.400 to 1.900 Range","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout PAC Racing Springs\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003ePAC Racing Springs engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full PAC Racing Springs lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003ePrecision Installed Height Measurement: PAC T903\u003c\/h2\u003e\u003cp\u003eAchieving the correct installed height is critical for optimizing your engine's valvetrain performance. The PAC Racing Springs T903 Valve Spring Height Micrometer is designed to provide quick, accurate, and repeatable measurements for your cylinder head assembly. With a versatile range of 1.400 to 1.900 inches, this tool is compatible with a wide variety of high-performance valve springs, making it an indispensable addition to any engine builder's toolkit.\u003c\/p\u003e\u003ch3\u003eTechnical Advantages\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMeasurement Range: 1.400 to 1.900 inches\u003c\/li\u003e\n\u003cli\u003eResolution: 0.050 inches per turn\u003c\/li\u003e\n\u003cli\u003eInside Diameter: 1.200 inches\u003c\/li\u003e\n\u003cli\u003eFinish: Durable Orange Anodized\u003c\/li\u003e\n\u003cli\u003eEase of Use: Precision-machined for smooth operation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe T903 micrometer features a clear, easy-to-read scale that allows for precise adjustments to your spring shims and retainers. By ensuring every valve spring is set to the manufacturer's recommended installed height, you maximize the efficiency of your camshaft and prevent coil bind or valve float. The vibrant orange anodized finish not only looks great but also provides a layer of protection against corrosion in the shop environment. When you need reliable, professional-grade tools for your next build, GGCRACING has the equipment you need to succeed.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular PAC Racing Springs products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pac-racing-springs-1-260-single-valve-spring-w-damper-1pk\" style=\"color:#0066cc;text-decoration:none;\"\u003ePAC Racing Springs 1200 Series 1.260 OD Single Valve Spring w\/Damper — High-Performance Ci\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pac-racing-springs-1-550-dual-valve-spring\" style=\"color:#0066cc;text-decoration:none;\"\u003ePAC Racing Springs 1200 Series 1.550 OD Dual Valve Spring — High-Output Drag Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pac-racing-springs-1-260-single-valve-spring-w-damper-1pk-1\" style=\"color:#0066cc;text-decoration:none;\"\u003ePAC Racing Springs 1200 Series 1.260 OD Single Valve Spring w\/Damper — Circle Track Perfor\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pac-racing-springs-1-645-triple-valve-spring-1pk\" style=\"color:#0066cc;text-decoration:none;\"\u003ePAC Racing Springs 1200 Series 1.645 OD Triple Valve Spring — Extreme Drag Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/pac-racing-springs-1-025-valve-spring-ovate-beehive\" style=\"color:#0066cc;text-decoration:none;\"\u003ePAC Racing Springs 1200 Series 1.025 OD Ovate Beehive Valve Spring — High-Efficiency Perfo\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"PAC Racing Springs T903 Valve Spring Height Micrometer \\u2014 1.400 to 1.900 Range\",\"description\":\"Measure valve spring installed height accurately with the PAC Racing T903 Micrometer. 1.400-1.900 range, orange anodized finish. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for PAC Racing Springs?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the PAC Racing Springs T903 Valve Spring Height Micrometer \\u2014 1.400 to 1.900 Range?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Suspension work requires proper spring compressors and torque specs. Plan 2-4 hours per corner for a DIY install.\"}}]}\u003c\/script\u003e","brand":"PAC Racing Springs","offers":[{"title":"Default Title","offer_id":41366268969044,"sku":"DHDL_PAC-T903","price":176.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/PACPAC-T903.jpg?v=1719608792"}],"url":"https:\/\/ggcracing.com\/collections\/valve-spring-height-gauges\/closeout.oembed","provider":"GGCRACING INC","version":"1.0","type":"link"}