New valve springs for 440 with Eddy heads

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New valve springs for 440 with Eddy heads #2825795 09/27/20 07:44 PM 09/27/20 07:44 PM
Joined: Nov 2003 Posts: 1,032 illinois B bigblk66_coronet OP super stock
bigblk66_coronet OP super stock B Joined: Nov 2003 Posts: 1,032 illinois	My box stock Eddy heads are 16 years old that i have on my 440. figuring it may be time to put fresh valve springs on them. its a 10:1 with a 292 purple shaft. any good recomendations on a good spring ? yes i do run the car occasionally at the strip. 66 Dodge Coronet 500 440w/727 11:10 30 over 440 w/292 purple shaft,stock Eddy heads,3:23,full exhaust Best ET. 12.38 @110 in street trim

Re: New valve springs for 440 with Eddy heads [Re: bigblk66_coronet] #2825813 09/27/20 08:21 PM 09/27/20 08:21 PM
Joined: Aug 2003 Posts: 43,237 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,237 Bend,OR USA	Is it, the motor and tach talking to you ? Is it not pulling as hard above 4500 RPM as it did to start with? If not worse now why try to fix something that isn't broken I would remove a couple of them, valve springs, especially on the exhaust valves and have them tested I would be tempted to try adding between .060 and .090 valve spring shims under all of them, make sure and check for coil bind first though before running the motor with them shimmed up Last edited by Cab_Burge; 09/27/20 08:24 PM. Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

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