valve drop calculation/conversion?
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From: Arnaudville, LA
valve drop calculation/conversion? I am waiting on a call back but I am no patient today LOL
A certain brand head has .175 valve drop with their 243 casting with 64cc chambers, 2.02/1.57 valves.
Now, with that exact same head milled down to 59cc chambers what would be the new valve drop?
Thanks
Brian
A certain brand head has .175 valve drop with their 243 casting with 64cc chambers, 2.02/1.57 valves.
Now, with that exact same head milled down to 59cc chambers what would be the new valve drop?
Thanks
Brian
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From: Was New Orleans, but swam to Baton Rouge
Red I am sure the math is something like this. To get ls6 heads to 59 cc you need to mill about .030 off of them. So with a .175 stock and then milled to 59 cc you would have .175 - .030 = .155.
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From: Arnaudville, LA
Sig, you damn engineer... I will call you with my future math questions LOL. John is working on some math to figure out what cam we can fit in their. I wouldn't mind just using the F7 since I like to hit it with the 175shot, but I think John is gearing more for the F13 if it will fit.
Thread Starter
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Joined: Dec 2003
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From: Arnaudville, LA
Good catch! LOL once they make it to my house I will just bring them to John @ FMS so he can "double check" the drop. I may just leave my current cam in and pick up a couple more N20 goodies 
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From: Was New Orleans, but swam to Baton Rouge
I guess I just ran the numbers too quickly. I wonder if they are taking less off the heads.
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