<span style="color: #800000"><span style="font-size: small"><span style="font-family: Comic Sans MS">I have a volcano s30 with a sh.18 engine. I'm looking to upgrade to .21 engine and was wondering if anybody ever did this to a volcano s30 and if so what was a good choice of engine? If not does anyone know what .21 engine would fit or what upgraded engine would fit in my truck to give me more speed and power. Thanks for any help.</span></span></span>

I would not even try to put a bigblock in the volcano. You will be breaking that transmission constently umong other things. Stick with an .18

Well Ihad found small small block .21 and I was interested in putting one of those. Iknow not to put a big block and that's why Ididn't put buy a 1/8th scale but was just trying to upgrade a little. Thanks for your info.

I meant found some small blocks.