by Guest Thu Sep 26, 2013 8:06 amcan anyone tell me the difference beteween a 240 and a 300 head, I know compression is different but what about runners and valves? I have a 300 to rebuilt and I don't know if I use a 240 or the 300 head.
2 posters
240/300 head difference
66ThunderVan- Number of posts : 384
Location : Portsmouth, Va.
Registration date : 2012-01-08
Valves look like they are the same head diameter, but the 300s are some type of stainless/monel. 240 valves attract a magnet a little but 300s don't attract at all. I haven't cc'd the chambers but the 300 looks like it has a smaller chamber due to it's heart shape and may ave a higher compression. The valves are not the same length so push rods and may be different. The rockers are different.
RichardP- Number of posts : 77
Location : San Luis Obispo Ca
Registration date : 2013-08-10
What about the Distributor Cap and Rotor
\What is the firing order of the 240 300 I have and aussie 250 and want to compare
\What is the firing order of the 240 300 I have and aussie 250 and want to compare
