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Edelbrock performer rpm heads #279396 04/06/09 04:40 PM 04/06/09 04:40 PM
Joined: Apr 2007 Posts: 123 Nebraska L Lime446 OP member
Lime446 OP member L Joined: Apr 2007 Posts: 123 Nebraska	Does anyone know what valve springs these heads come with and what kind of seat pressure they have and open pressure at 520 lift any info would be greatly appreciated

Re: Edelbrock performer rpm heads [Re: Lime446] #279397 04/06/09 04:48 PM 04/06/09 04:48 PM
Joined: Jul 2004 Posts: 4,384 Worst Weather USA 493_DART master
493_DART master Joined: Jul 2004 Posts: 4,384 Worst Weather USA	Installed height 1.885� Seat pressure @ 1.900� = 115lbs. Open pressure @ 1.400� =280lbs. Coil bind 1.160� they are single w/ damper --for up to .600 lift cams.

Re: Edelbrock performer rpm heads [Re: 493_DART] #279398 04/06/09 04:52 PM 04/06/09 04:52 PM
Joined: Apr 2007 Posts: 123 Nebraska L Lime446 OP member
Lime446 OP member L Joined: Apr 2007 Posts: 123 Nebraska	Thanks a bunch!

Re: Edelbrock performer rpm heads [Re: Lime446] #279399 04/06/09 05:37 PM 04/06/09 05:37 PM
Joined: Jul 2006 Posts: 4,319 Puyallup, WA S StealthWedge67 master
StealthWedge67 master S Joined: Jul 2006 Posts: 4,319 Puyallup, WA	Probobly a fairly safe hydraulic cam spring. If you're running an aggressive solid or roller, I'd jump to a spring specific to that cam. LemonWedge - Street heavy / Strip ready - 11.07 @ 120

Re: Edelbrock performer rpm heads [Re: StealthWedge67] #279400 04/06/09 05:46 PM 04/06/09 05:46 PM
Joined: Apr 2007 Posts: 123 Nebraska L Lime446 OP member
Lime446 OP member L Joined: Apr 2007 Posts: 123 Nebraska	A friend bought the car turn key and I've been checking it over for him. Being unfamiliar with them heads and springs I wanted to make sure that it didn't have too much spring for the 509 hyd cam. It's his first drag car and I'd hate to see something major happen to him that could've been prevented.

Re: Edelbrock performer rpm heads [Re: Lime446] #279401 04/06/09 05:54 PM 04/06/09 05:54 PM
Joined: Dec 2007 Posts: 10,542 BROOK PARK, OH WILD BILL Senior Member of the Junior Dragster Club
WILD BILL Senior Member of the Junior Dragster Club Joined: Dec 2007 Posts: 10,542 BROOK PARK, OH	I don't think he'll have an issue with that cam. I used a Comp 525 hyd and now a 555 solid with my OOTB eddy heads and have yet to see an issue.

Re: Edelbrock performer rpm heads [Re: WILD BILL] #279402 04/06/09 07:25 PM 04/06/09 07:25 PM
Joined: Jan 2003 Posts: 1,221 Jarrettsville, MD T tywebb2 super gas
tywebb2 super gas T Joined: Jan 2003 Posts: 1,221 Jarrettsville, MD	I've been running the 84cc Eddys out of the box with a MP509 cam in my 440 for a few years and am very happy. '72 440 Cuda 11.673 @ 115.91 w/1.663 60'

Re: Edelbrock performer rpm heads [Re: tywebb2] #279403 04/07/09 12:33 AM 04/07/09 12:33 AM
Joined: Jan 2003 Posts: 27,421 Balt. Md 3 383man Too Many Posts
383man Too Many Posts 3 Joined: Jan 2003 Posts: 27,421 Balt. Md	My sons 400 ran the stock springs that come on the Eddy heads for 2 years with his MP .557 cam. Not a single problem. We updated to dual springs and some mild port work over a year ago and he went from 11.55 @ 116 to 11.45 @ 117. Ron

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