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Jim Caughlin · 12-03-2014, 02:33 PM

Same issue with lightweight rearend parts, gundrilled axles, alum spool, lightened ring gear, no noticable improvement. On the other hand, lighter weight flywheel and clutch made a huge difference. In my case, this is a 4 cyl motor that crosses the finish line at 9200.

12-03-2014, 02:33 PM	#1
Jim Caughlin Senior Member Join Date: Mar 2002 Location: Woodburn, Or Posts: 680 Likes: 77 Liked 790 Times in 241 Posts	Re: steel or aluminum driveshaft? Same issue with lightweight rearend parts, gundrilled axles, alum spool, lightened ring gear, no noticable improvement. On the other hand, lighter weight flywheel and clutch made a huge difference. In my case, this is a 4 cyl motor that crosses the finish line at 9200.