And here's another link to a previous thread about dyno testing the various heads. See if this helps.

http://forums.y-blocksforever.com/FindPost65973.aspx

Lorena, Texas (South of Waco)

morning Jeff

try this http://forums.y-blocksforever.com/Topic61587.aspx?PageIndex=2

or maybe this http://yblockguy.com/techtips/cylinder_head_mods.html

J Mummert also sells 1.84 IL valves for later heads

stuey

The 292 I will be building came out of a 62 galaxie and I heard the valves got smaller in 1960,I am building a basicly stock motor for torque so are the 60 and up heads really that bad so other then smaller valves are there any other major changes done to them. Since I am not building a race motor and if I cant find a set of G heads locally would the 55 power pack or C heads do me just fine if the 60 and up heads are not worth using.

Butchering up everything I can get my hands on in Dayton Ohio