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TwistedTerror
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4,013 Posts
Discussion Starter #1
Got kind of a small question, I am going to put new spring in my 461 double heads on my street car. And I was wondering what is the factory spring diameter? Thanks...
 

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Butch
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8,208 Posts
Got kind of a small question, I am going to put new spring in my 461 double heads on my street car. And I was wondering what is the factory spring diameter? Thanks...
You can fit 1.255"

If its a solid flat tappet or hydraulic roller use the Manley or Crane H-11 1.255" spring

Great spring and what I use on most GM heads with uncut pockets, these have the pressure of a 1.46" dual spring for flat tappet racing
 

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Butch
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8,208 Posts
He asked what the factory spring diameter was and that is 1.250 .
He said he was gonna put a new spring in there so i figure to give him a good spring for flat tappet solids and hyd rollers
 
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