The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - What did you do to your truck today.The 3rd chapter

cab4word67 · 09-23-2021, 11:51 AM

OK I recently built a ford 289 / 480 lift and after snapping off 4 of my studs in a total of 60 miles I found I had spring bind. Check your adjustment. If adjusting cold make sure you can spin the push rods when the valves are closed. If you adjusted while running its just past clatter then 1/2 turn, and before you pull the head make sure you can get a feeler gauge in between the springs when at full lift (about 5-10K). You are ether to tight or lifting more than the valve can go down.

09-23-2021, 11:51 AM	#2442
cab4word67 Registered User Join Date: Sep 2020 Location: portland oregon Posts: 183	Re: What did you do to your truck today.The 3rd chapter OK I recently built a ford 289 / 480 lift and after snapping off 4 of my studs in a total of 60 miles I found I had spring bind. Check your adjustment. If adjusting cold make sure you can spin the push rods when the valves are closed. If you adjusted while running its just past clatter then 1/2 turn, and before you pull the head make sure you can get a feeler gauge in between the springs when at full lift (about 5-10K). You are ether to tight or lifting more than the valve can go down. Last edited by cab4word67; 09-23-2021 at 12:04 PM.