| Brand |
ProForm |
| Model |
66790 |
Designed for 1955-1986 Chevrolet all modelsFor 7/16" StudsMeasures proper push rod lengthCritical for peak performanceThe Proform push rod length checker is for 7/16" studs. Proper push rod length is critical for peak performance. Minimizing bent or broken valve stems, guide wear and energy-wasting valve side loading.