1. M

    All Small Six "Built" 250 Dyno results

    Just ran my 250-powered Ranchero in Lemons, but on Friday we had time to get it dyno-ed. Figured it could be a useful benchmark for what you get from a build. The specs: 250 D5DE block, standard bore 255 V8 pistons D3 Head opened up for 2V conversion, decked level but not milled down...
  2. M

    All Small Six Restrict Oil Feed to Head on high RPM 250?

    My previous 250 developed spontaneous oil starvation issues at high RPM that went away after letting the motor sit for ~30sec. With a new oil pump and tight clearances on new bearings I think it might've been pumping all the oil into the head/valve cover. It's a common mod to FE engines that...