Quote:
Originally posted by Hotfingrs
I've had several engines built with the 400 sbc, all in the 600hp plus range, and have never had a problem with head caskets. Of course the heads did have the steam holes in them. The current engine that I am using also has the heads drilled between the middle cylinders by the plugs, and the water pump is also drilled on each side and a braided line runs from the pump to the heads. The intake manifold also has front to rear cooling lines.
These engines see weekly trips to the drag strip and the "occasional" friday or saturday night blast down the highway of life......
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So WITH the steam holes, drilled heads, drilled waterpump, and external cooling lines, you can get the engine to last on the track and light (low miles) street use.
My point exactly. What would be needed on a Ford siamesed cylinder block to get it to last? Same thing; nothing because the Ford design is 'better', something less but still something...?
Like I said, I've heard siamese bores are trouble on the street. I still haven't heard anything to disabuse me of this impression.
Thanks