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Old 01-24-2011, 01:43 PM   #1
bbrocksr
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Location: Yakima Washington
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Default Flattop or dome pistons?

I have a 21 stud engine with 36 waterpump style heads on it. It has the waterpump blockoff plates which make it a 37 or early 38. I want to put 37 heads on it. I haven't pulled a head yet to see which pistons it has. Were flattop pistons just 36 and earlier?
Thanks, Bill
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Old 01-24-2011, 02:09 PM   #2
richard crow
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Default Re: Flattop or dome pistons?

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remember these eng.were worked on over the years. people used what ever they had especley durning the war. look at the head numbers if they start with a 48 or 68 there for a domed piston. if they are 40 there for flat you can put a domed head on a flat piston. but you cant put a flat head on a domed piston what i am saying to be sure you schould remove the heads . i even worked on an eng that had domed heads with 3 flat pistons & 5 domed pistons & if the car is from south america you might find camble soupe cans for pistons
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