[78w72]

He stated .010 milled off the heads is equal to 1.66 CC reduction, and that it takes 4cc to increase compression 1/4 of 1 point on those heads... so basic math says the compression was increased less than 1/8 of 1 point, not 1/4 of 1 point. Then add in the other numbers mentioned for valve job etc & you are actually lower than the guess of 10.5 and nowhere near 10.75.

Also, water wetter temp reduction claims are over rated from my experience using it and what Ive read from other real world experience... the "up to" 30° temp reduction is for using pure water, as you increase the amount of anti-freeze that number drops a lot, so if you have any % of anti freeze its not reducing the temps as much as claimed... and why are some numbers on that chart actually higher than before adding it?

& BTW, there are countless STREET/RACE engines on here & out in the world, guys have been building dual purpose cars for decades... a basically stock 428, even with backwards pistons and slightly advanced cam timing is NOT a race motor.