I may have just been lucky in the past not having clearance issues but isn't the 350 cam height the same as the 400? The only difference I see is the 350 bore is smaller. I have had several 400's with stock rods and roller cams. The first had a small base circle cam. It was replaced with another roller cam with a normal base circle. The lobe centers were 110 or 112 - can't remember exactly - but the rod bolt didn't hit the cam in either case. It was close but didn't hit. Competition products has cap screw rods already clearance. The are good quality and not to expensive. You can always mock up the motor with what you have and carefully turn it over, by hand, while looking at the cam and rods clearance. The cam you like looks pretty mild and may be just fine. For a mock up I just put the pistons on the rods and put them in with no rings. It's easy to turn it over and do your checking. If you have to do some minor clearancing on the rod bolt heads, do it then. I'm running a sbc Dart block. Cam location is stock GM location and height. I have a 4 inch stroke and 6 inch rods. I have a longer stroke, rod length and more cam lift than the one you are building. The cam is a roller with a full base circle. The rods are Howards cap screw rods. No cam clearance issues at all.
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woodys 427
