OK everyone, we have a 68 bronco. It has a 4.5 inch suspension, one inch body lift. 4.88 gears 34x10.50 super swamper ltb. Mild 302. Last project done was the front axle gears in November. Rear axle gears and body lift were done in the spring ,last year. The bronco sits outside under a cover during the winter. When we parked it in November it ran great, no issues. Drove it in March to get some gas, started fine , initially drove fine. It has developed a very sporadic shudder\ chatter. Doesn't happen often , maybe once in an hour of driving or so. When it happens it's unmistakable. Drove it a week in front wheel drive with no shudder\chatter. It only happens in first gear, from a stop. I've researched it. I've checked torque specs on ubolts, drive train . I replaced the rear driveshaft with a Tom Woods driveshaft. We needed one anyway, no change. No noticeable oil leak from rear main seal. There is some flex in the firewall , it was mentioned in a thread . I'm making a brace for it. I'm hoping someone has come across a situation like this and can give me a new lead . I'm almost out of ideas here.
Thank you
Kirk
Thank you
Kirk
