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03-04-2021, 05:26 PM
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#15 |
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Senior Member
Join Date: Feb 2002
Location: Southeast Michigan
Posts: 910
Likes: 70
Liked 239 Times in 114 Posts
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Re: 2008-9 Impala 5.3
A special version of the 4L65 was built for Volvo , before Ford bought them . It had the highest sprocket ratio and Final Drive ratio . Also had the heat treated 4th clutch shaft . Those parts would be a good upgrade for drag racing , although you probably won't ever get into 4th gear . One thing for sure is to get some high torque half shafts . There may be aftermarket help for that .
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