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Old 07-28-2011, 09:10 PM   #118
OKGMC4
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Join Date: Oct 2009
Location: Broken Arrow, OK
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Re: Yet another GMC build

On the mark it is 93-98
93-96 use p/n F3LY 8C607 A @ 245.80
The 93-96 spin 1100 rpms on low and 1850 on highspeed.
97's use p/n F7LZ 8C607 AB @ 196.23
98's use p/n F8LZ 8C607 AA @ 140.11
The 97-98 spin 1800 on low and 2225 on high.

T birds and cougars are similar on some years (I think the 4.6l cars) There are some that are single speed and some that are two speed. Mine has three wires and definitely works at two speeds.
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https://67-72chevytrucks.com/vboard/...d.php?t=851167
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