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#1
05-30-2005, 08:18 PM
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O.K.,I need some help.Fresh 400 block .030 bore.New forged TRW flat tops with 4 "eyebrows" or valve reliefs.Stock uncut crank.Stock rods.6x4 heads milled .010 I think the chambers are 98cc,uncut.The cam is an 068 "ram air I" or "HO" Close guess on Compression Ratio???Any help greatly appreciated!
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1967 GTO ! Latest project basket case-stored for now... Forced to make due with 430 H.P. daily driver chevy...... |
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#2
05-30-2005, 08:18 PM
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O.K.,I need some help.Fresh 400 block .030 bore.New forged TRW flat tops with 4 "eyebrows" or valve reliefs.Stock uncut crank.Stock rods.6x4 heads milled .010 I think the chambers are 98cc,uncut.The cam is an 068 "ram air I" or "HO" Close guess on Compression Ratio???Any help greatly appreciated!
__________________
1967 GTO ! Latest project basket case-stored for now... Forced to make due with 430 H.P. daily driver chevy...... |
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#3
05-30-2005, 09:52 PM
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Depending on the deck height and combustion chamber cc's........I figured it with zero deck and 93 cc chambers and got 8.7:1.
According to Wallace Racings site, the 6X-4 heads have a 93 cc chamber but they are usually bigger than advertised. Milling .010 will knock off about 2-3cc's. Here is a decent calculator http://rosspistons.com/calculator.php
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"It is foolish and wrong to mourn the men who died. Rather we should thank God that such men lived."- General George Patton "Perpetual peace is a futile dream."-General George Patton "I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them."-Thomas Jefferson "Any society that would give up a little liberty to gain a little security deserves neither and will loose both."-Benjamin Franklin |
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#4
05-30-2005, 09:54 PM
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Oh yeah...the TRW pistons will usually be about -6cc for the eye brows.
__________________
"It is foolish and wrong to mourn the men who died. Rather we should thank God that such men lived."- General George Patton "Perpetual peace is a futile dream."-General George Patton "I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them."-Thomas Jefferson "Any society that would give up a little liberty to gain a little security deserves neither and will loose both."-Benjamin Franklin |
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