The Stovebolt Site Forums The Shop Area Engine Shop Intake valve 302

Time to install new intake valves.
What current in production valves will work?

The intake valves that were in my 302 head when I got it had an OD of 1.856". When I had the head rebuilt by Texas Engine Machine in Llano, they replaced the intakes with a small block Chevy intake valves that measured 1.841", but still more than covered the seat area in the head. Sorry, I don't know part numbers or maker of the valves.

There's probably enough room in the combustion chamber to open up the intake ports a little and run a 1.94" valve from a 350 V8.

www.ebay.com/itm/840108770276?

Jerry

A lot of 302 GMC engines had rotating valves. If you have them, you will need new valves, springs, spring retainers and keepers. The rotating valves were difficult to adjust and required a special tool. We used them back in the day, but they are not necessary for the way vehicles are driven today. The rotating valves can be identified by the tapered groove for the keeper. I have a bunch of these left over from over 60 years ago and they are scrap. Attached is a photo of a rotating valve.