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Old 06-17-2003, 03:38 PM   #1
82 GT
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Join Date: May 1999
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Default need help measuring torque converter bolt pattern

How do you measure the bolt pattern for a torque converter?
I have a '78 C-4 tranny. I want to order my stall converter from Summit but I need to know the bolt pattern. It's either 10.5 or the 11 7/16 pattern.
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'82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.
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