Forum can the giant power head be used in combination with domed Aluminium high compression Pistons?
From what I remember the Giant Power Head is one heavy beast!
John -- No, it cannot. I had mine milled 1/8" and had to relieve a couple of spots when using flat-top pistons. Definitely no room for domed ones.
We milled a head 1/8 inch and opened the water jacket. Make sure the head hasn't been milled before.
Thanks for the responses, I suppose the next question then would be,if you had a choice between the Giant Power head or Domed Pistons which would you choose? Feedback please.
(Message edited by Jtt3 on February 28, 2016)
Use the Giant head. The high dome pistons increase the compression ratio but create a combustion chamber that is so inefficient that it almost negates the power gain. My thoughts, opinions will vary.
I have done Pistons with a stock "low" head in my '13. Also 280 cam, early intake , Stromberg OF, Trufire ignition. The whole combination works very well.
I've driven thousands of miles with each of these combinations: Giant Power head, Reeder head, Z head, and stock head milled 1/8" with domed pistons. I can't tell any difference between the performance of any of those. But the Giant Power head is the clear winner in the "cool factor" competition.
What head did Louis Chevrolet manufacture for the T?
I bought a Giant power head, which I still have, and couldn't use it because it was made for a car with big valves. So, it sits on the shelf!
Charlie B, the Chevrolet Brothers made "Frontenac" OHV heads.
Your comment about the problem associated with "big valves" makes me curious. Can you explain further please?
A high domed piston creates a problem when the exhaust valve opens because the gasses are all around the piston and must change direction in order to get out of the combustion chamber.