hi,

i'm lookin for 305 aluminum cylinder heads that have biggest valve of 1.94, are there any ? or can i use 2.02 valves, can i install 305 heads on 305 block anyway?

best regards

 

trick flow 175's for smaller bore machines 1.94" valves

I think 113 L98 heads should work as well.

 

Here is the heads Orr89RocZ is talking about; http://www.summitracing.com/parts/TFS-30300001/

You can make a bigger valve work with out much hassle but how much bigger and how far you can lift it needs to be checked before you install. Cutting a notch/relief into the block for the intake valves helps make use of the larger valve and increase potential lift. Do some research on this before you commit. The cut should be made sparingly, removing as little as possible to achieve the desired effect and not going to, or passed obviously, the top piston ring.

 

thank You both for quick help

best regards