Quote:
Originally Posted by Safari Larry
Yes Don, I remember that well, as I recall you had problems with them twice before switching to a '60 engine. Your's is the only post-56 tubes I've heard of that were brass. Pontiac switched from brass to stainless tubes mid year '56. The 55-56 tubes are different (round) than the 57-59 tubes. They are often very difficult or impossible to remove without destroying them.
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When I first got my present 59 block it had 1960 heads on it and gusher tubes in them(stainless) same as the tubes that were in the 59 420A motor I had at the time. They were in excellent shape in terms of corrosion or damage. I believe the shape was so it would be very difficult(except for an idiot with a hammer) to install with coolant holes facing the wrong direction. Both motors had been sitting since 62 when the owner died. The 420A was still in the car and still had coolant in it(31k on odometer) the other a fresh performance build that by all indications was never run.(It was sitting on ground next to the car). (car was found about 30 miles north of Syracuse NY in a colder snowier region) The "built" 59 had the ports heavily taped including water crossover and no intake.