Re: edelbrok performer rpm 440 heads
[Re: S/ST 3040]
#954405
03/20/11 01:47 PM
03/20/11 01:47 PM
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Joined: Feb 2005
Posts: 370 Real North Cal.
66er
enthusiast
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enthusiast
Joined: Feb 2005
Posts: 370
Real North Cal.
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Quote:
Try a Comp Cams 928, installed @ 1.875"
I ran those for a while with a .600" flat tappet cam. Fit like a glove
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Re: edelbrok performer rpm 440 heads
[Re: mopar65]
#954407
03/20/11 01:51 PM
03/20/11 01:51 PM
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Joined: Sep 2009
Posts: 257 madison, ohio
modified1090
OP
enthusiast
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OP
enthusiast
Joined: Sep 2009
Posts: 257
madison, ohio
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Quote:
i ran the isky 8005A with the same set up that you have but with 1.6 indy roller rockers. mopar65
did u have to cut the seat pockets for the smaller id of the inner spring? or did u just shim for the difference in installed height between the edelbrock and isky recomend, i think the difference is only .010" is that enough to worry about?
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Re: edelbrok performer rpm 440 heads
[Re: modified1090]
#954409
03/20/11 02:13 PM
03/20/11 02:13 PM
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Joined: Dec 2008
Posts: 415 Peru
cbarracuda
mopar
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mopar
Joined: Dec 2008
Posts: 415
Peru
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Quote:
i am running the mopar purple shaft .590 312 duration cam. i cannot find any recommendations for this anywhere.
the old mopar book said 140 sit pression,
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Re: edelbrok performer rpm 440 heads
[Re: cbarracuda]
#954410
03/20/11 02:23 PM
03/20/11 02:23 PM
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Joined: Sep 2009
Posts: 257 madison, ohio
modified1090
OP
enthusiast
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OP
enthusiast
Joined: Sep 2009
Posts: 257
madison, ohio
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Quote:
Quote:
i am running the mopar purple shaft .590 312 duration cam. i cannot find any recommendations for this anywhere.
the old mopar book said 140 sit pression,
thanks, i know that the spings on the heads now are only rated at 115 seat psi 280@.500"
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Re: edelbrock performer rpm 440 heads
[Re: qwkmopardan]
#954412
03/20/11 04:18 PM
03/20/11 04:18 PM
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Joined: Feb 2005
Posts: 4,318 Prospect, PA
BSB67
master
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master
Joined: Feb 2005
Posts: 4,318
Prospect, PA
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Quote:
I have done several sets of eddys small and big block. What has worked every time on big block is adding a red or blue comp inner spring to the original spring with comp retainer #741-16 steel or 732-16 titanium. This is to get 340-350 at .600 lift and 150-160 seat pressure. The original springs are borderline to stiff for hyd cams and borderline to weak for solid cams. The original springs from edel. will work the way they are if not revving over 6000 rpm. If the edel. springs are new, the blue should work, if the edel. springs have a couple hundred runs on them try the red inner. red part#975-16, blue part#974-16. These are around $30 at summit. Steel retaners and locks will be around $80. tit. retainers will shock you at around $320 with locks.
Nice info. Thanks
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Re: edelbrock performer rpm 440 heads
[Re: qwkmopardan]
#954413
03/20/11 05:52 PM
03/20/11 05:52 PM
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Joined: Jan 2003
Posts: 4,448 Phoenix, AZ
MoparBilly
master
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master
Joined: Jan 2003
Posts: 4,448
Phoenix, AZ
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Quote:
I have done several sets of eddys small and big block. What has worked every time on big block is adding a red or blue comp inner spring to the original spring with comp retainer #741-16 steel or 732-16 titanium. This is to get 340-350 at .600 lift and 150-160 seat pressure. The original springs are borderline to stiff for hyd cams and borderline to weak for solid cams. The original springs from edel. will work the way they are if not revving over 6000 rpm. If the edel. springs are new, the blue should work, if the edel. springs have a couple hundred runs on them try the red inner. red part#975-16, blue part#974-16. These are around $30 at summit. Steel retaners and locks will be around $80. tit. retainers will shock you at around $320 with locks.
Likewise for me, just went through my collection of old springs until I found a set of inners that gave me the right pressure. When I pulled the 312/590 out and went with the 304/640 ultradyne, I upgraded to crower spriings and Titanium retainers.
"Livin' in a powder keg and givin' off sparks"
4 Street cars, 5 Race engines
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Re: edelbrok performer rpm 440 heads
[Re: 66er]
#954415
03/20/11 07:45 PM
03/20/11 07:45 PM
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Joined: Jan 2003
Posts: 3,031 Erda, UT
67Charger
master
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master
Joined: Jan 2003
Posts: 3,031
Erda, UT
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Quote:
Quote:
Try a Comp Cams 928, installed @ 1.875"
I ran those for a while with a .600" flat tappet cam. Fit like a glove
Same here, Eddie valves, 1.6 rockers with .600" net lift with Comp 928's, stable to 7000+ rpm. Do yourself a favor and have the valve guide clearances checked, mine were tight and I have heard MANY reports of the same.
11.33 @ 118.46 on motor 10.75 @ 125.35 w/ a little spray Now, high Speed Open Road Racing - Silver State Classic Challenge, Nevada Open Road Challenge, Big Bend Open Road Race Rocky Mountain Race Week 2020, 2022 2.0, Sick Week 2023
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Re: edelbrok performer rpm 440 heads
[Re: 67Charger]
#954416
03/20/11 09:43 PM
03/20/11 09:43 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Quote:
Quote:
Quote:
Try a Comp Cams 928, installed @ 1.875"
I ran those for a while with a .600" flat tappet cam. Fit like a glove
Same here, Eddie valves, 1.6 rockers with .600" net lift with Comp 928's, stable to 7000+ rpm. Do yourself a favor and have the valve guide clearances checked, mine were tight and I have heard MANY reports of the same.
My eddy heads had the same tight valve guide issue as well.
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