LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

GM 847 and 1.65 ratio rockers?

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Old May 6, 2005 | 02:12 AM
  #1  
johnny o's Avatar
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From: Cambridge, Ontario, CANADA
GM 847 and 1.65 ratio rockers?

I know 1.7 ratio rockers would be too much and 1.6 should work great with good enough springs, but what about 1.65 ratio? Maybe someone can do the math on lift for me I kind of forget how. Also, anyone have good/bad comments on the scorpion rockers? ok for street use? are they aluminum?
Old May 6, 2005 | 08:27 AM
  #2  
WS Sick's Avatar
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From: Oklahoma where trees are made of wood.
Re: GM 847 and 1.65 ratio rockers?

Take the advertized lift #s and divide by 1.5 then multiply by 1.65.

1.7s will work too, you just have to have the springs to handle it.
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