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Re: Hemi dynamic compression est.
[Re: johnzgarage]
#3183022
10/11/23 11:33 AM
10/11/23 11:33 AM
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Joined: Dec 2021
Posts: 1,144
Loudoun County, VA
Brad_Haak
super stock
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super stock
Joined: Dec 2021
Posts: 1,144
Loudoun County, VA
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Here are two online calculators you can try, but don't be surprised if the results vary significantly because of the difference in how they define the IVC point http://www.wallaceracing.com/dynamic-cr.phphttps://uempistons.com/p-27-compression-ratio-calculator
2021 Challenger 6.4L Scat Pack 1320
100% stock: 1.680, 11.894 at 113.75 (DA 175 ft)
weight reduction, wheels, tires, Hellcat air box: 1.661, 11.686 at 115.97 (DA 710 ft)
1973 Challenger 452 ci street/strip [2008]
pump gas, DOT radials: 1.454, 10.523 at 126.44 (DA 514 ft)
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Re: Hemi dynamic compression est.
[Re: Brad_Haak]
#3183095
10/11/23 02:13 PM
10/11/23 02:13 PM
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Joined: Jan 2004
Posts: 4,570
Motor City
6PKRTSE
master
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master
Joined: Jan 2004
Posts: 4,570
Motor City
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Sounds about right. Mine is close to that but in a 528 Hemi.
1963 Belvedere 440 Max Wedge Tribute
1970 Charger R/T S.E. 440 Six Pack
1970 Challenger R/T, 528 Hemi
1970 Charger 500 S.E. 440 4 BBL
1970 Plymouth Road Runner 383
1974 Chrysler New Yorker 440
1996 2500 RAM 488 V-10 4X4
2004 3500 Dually Cummins 4x4
2012 Challenger R/T Classic.
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Re: Hemi dynamic compression est.
[Re: johnzgarage]
#3183105
10/11/23 02:56 PM
10/11/23 02:56 PM
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Joined: Oct 2007
Posts: 4,209
New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,209
New York
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60 ABDC predicts 9.08:1 DCR and 244 psi CCP
Boffin Emeritus
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