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upgrading edelbrock magnum springs? #912139 01/23/11 11:34 PM 01/23/11 11:34 PM
Joined: Dec 2007 Posts: 10 Sacramento P ptowntsi OP member
ptowntsi OP member P Joined: Dec 2007 Posts: 10 Sacramento	I have the edelbrock aluminum magnum heads I was planning on putting on my 360 magnum, but some people are saying the heads aren't good out of the box. Are the stock springs any good or is it worth upgrading to bee hives? What springs can I upgrade to for more lift without machining the spring seats? Do ls1 springs fit? I don't even know if I need more lift but if it gets me more power why not.

Re: upgrading edelbrock magnum springs? [Re: ptowntsi] #912140 02/10/11 01:21 AM 02/10/11 01:21 AM
Joined: Dec 2007 Posts: 10 Sacramento P ptowntsi OP member
ptowntsi OP member P Joined: Dec 2007 Posts: 10 Sacramento	bump!

Re: upgrading edelbrock magnum springs? [Re: ptowntsi] #912141 02/10/11 01:30 AM 02/10/11 01:30 AM
Joined: Feb 2004 Posts: 4,501 Gainesville,FL G goldmember master
goldmember master G Joined: Feb 2004 Posts: 4,501 Gainesville,FL	The springs have to match the cam and lift is the last of many cam specs you need to worry over. The stock springs work ok with many hyd cam lobes(but not all) and even some mild solid lifter cams. More info may help.

Re: upgrading edelbrock magnum springs? [Re: goldmember] #912142 02/10/11 02:37 AM 02/10/11 02:37 AM
Joined: Jan 2003 Posts: 9,826 las vegas 70AARcuda master
70AARcuda master Joined: Jan 2003 Posts: 9,826 las vegas	the question is what cam are you going to use in the magnum engine? Tony 70 AARCuda Vitamin C 71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield) 71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas) 71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)

Re: upgrading edelbrock magnum springs? [Re: 70AARcuda] #912143 07/12/11 07:11 AM 07/12/11 07:11 AM
Joined: Dec 2007 Posts: 10 Sacramento P ptowntsi OP member
ptowntsi OP member P Joined: Dec 2007 Posts: 10 Sacramento	looking at something like the COMP XR268HR-10? with 1.6 scorpion SBC roller rockers.

Re: upgrading edelbrock magnum springs? [Re: ptowntsi] #912144 07/15/11 12:28 AM 07/15/11 12:28 AM
Joined: Dec 2007 Posts: 10 Sacramento P ptowntsi OP member
ptowntsi OP member P Joined: Dec 2007 Posts: 10 Sacramento	bump, put my cam info in. Will that be too radical to keep good fuel mileage? The other cam I like is the KRC 210x which is similar to the comp 262HR-12. These are the spec's for that 206/210 .480/.512 112 The KRC has a bit more lift and 110LSA. I'd be running with 1.7 ford rockers if I used this one to kick the lift up some more. All things equal, how will having a total lift of .570 vs say .512 affect the engine if I am running out of the box edelbrock heads?

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