Re: Magnum valve spring question
[Re: 65rbdodge]
#1294109
08/30/12 02:07 PM
08/30/12 02:07 PM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
Too Many Posts
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Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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No. they will not work
stock springs are barely enough for a stock cam. I can take them and compress them a little bit by hand, that's how weak they are.
they'll PROBABLY accept the lift though, as they don't run into clearance issues until .500 lift, but again, you'll float the valves long before you hit 5,000 rpm.
I would consider running the Hughes 1110 springs or something similar. that's a good all-around spring that works for a lot of cams.
**Photobucket sucks**
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Re: Magnum valve spring question
[Re: dogdays]
#1294114
08/31/12 10:25 AM
08/31/12 10:25 AM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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Quote:
Patrick, where are you?
Comp 901s will work.
R.
https://board.moparts.org/ubbthreads/show...rue#Post3134434
ask and ye shall receive.
comp 901's have a ~1.1" coil bind height. you'll get about 1.6-1.64" install height with the proper retainers, so if you want to leave .060 before coil bind, that'll leave you with .440-.480" max lift, depending on install height.
for this moderate lift, I'd use either the GM3100 springs and retainers, or for about the same price, hughes #1110 springs and either used 2.2L retainers or hughes retainers. that'll give you ~.040-.060" more lift capacity than the the GM3100 springs, for about the same price (if you're not junkyard scrounging)
Last edited by patrick; 08/31/12 10:38 AM.
1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: Magnum valve spring question
[Re: 1BAD68]
#1294116
08/31/12 01:06 PM
08/31/12 01:06 PM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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nope, they dropped right on my magnum heads.
1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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stock Mag springs = Wimpy! Made for low RPM truck torque output, not high RPM horsepower.