~450hp from stock stroke 340?

Newbomb Turk said

They can think what they want. But publicly posting error keeps people in the dark.

Aluminum heads don’t suck power. They don’t reduce detonation.

But that myth will keep going because it hasn’t been eradicated yet. Probably never will.

Click to expand...

Newbomb Turk said

They can think what they want. But publicly posting error keeps people in the dark.

Aluminum heads don’t suck power. They don’t reduce detonation.

But that myth will keep going because it hasn’t been eradicated yet. Probably never will.

Click to expand...

Newbomb,

Thank you for enlightening me:

My comments were not intended to be misleading, they come from following Larry Shepard's Book. On my budget I follow his recommended cylinder head compression ratio combinations.

Swapping the Speedmaster 2.02 aluminum heads for (New Zealand) EQ 318B 1.92 on my La 360 short block netted me a lower et and better mph with flat top piston combo. The swap included a cam change as well, from the 238/238 108 solid to a 248/256 110 assuming the cylinder pressure went down about 10psi with the EQ's.