olds307 and 403
- Oct 14, 2008
I started polishing the chambers on my ported #6 heads. There is quite a bit of carbon in the chambers, no wonder I had pinging. I need to open up the chambers a lot, 55cc is too small. I have a used Corteco 403 head gasket set in place so I don't go too far on the sides. They have Comp double springs and positive seals. I will put on springs to match the roller cam and new positive seals. I will put up pics maybe today.