Chevy valves are .100 longer then Ford valves. To keep rocker arm geometry correct, you'll need .100 longer pushrods too.
I've also read that generally the biggest intake valve you should use on early Ford heads are 1.90" . Any more, the valve starts to interfear with the sparkplug and flame front propagation.
I've also read that generally the biggest intake valve you should use on early Ford heads are 1.90" . Any more, the valve starts to interfear with the sparkplug and flame front propagation.