i've got 241 heads with stock intake and exhaust valves. I want to install 2.055 intake vavles in place of the stockers, and use the stock eshaust valves. can i do this without changing anything?

 

Nope you will have to upgrade the seats in the intake. Plus you are really not going about things right if you just want to upgrade the valves to try and increase flow. That will not yield anything but a lighter wallet. When you increase valve size you have to increase throat size as well in proportion to get the real results. Thus, you have to blend the bowls back into the seats for a smooth transition. Not to mention you need to have the right valve back angle and valve job to compliment each other. A plain jane machine shop cant help you with anything but a basic cut and grind.

Brandon