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05-31-2007, 06:19 PM
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Registered Member
Join Date: Mar 2003
Location: Saint Louis, MO
Posts: 634
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Re: Cubic inch eats up duration????
The cubic inches grow faster than the intake valve does, so a larger engine needs the added duration to keep a good cylinder fill as it takes longer than when the valve to ci ratio is smaller.
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Tom (Torque) Moss 88Gt 5spd Vert, FLowmaster Catbacks, stock cam advanced 4° @ 108.5° ICL, NMRA prepped GT40P heads 1.85/1.55 valves and 1.7 rockers, MAC P headers Jet-Hot coated, 97 Exlporer intake (ported lower), TB and injectors. 277RWHP/330RWTQ (SAE). http://www.fastlanecars.com/ |
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