sonnax smartech drum
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TECH Enthusiast
Joined: Sep 2010
Posts: 534
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sonnax smartech drum hey guys wondering what are yall running as far as 3/4 clutch set? are yall using the return springs or no?transmission is going on a 2000 camaro with a forged 5.7 and a 200 shot max..for converter its going to run a PY3600..any help is greatly apreciated
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Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
I am running a 9 friction setup in my SmartTech drum. Using Raybestos GPZ 105 (.066) frictions with perhaps one or two GPZ 100 (.078) to get the desired clearance in the .035 to .040 range. Or use BW Hi-Energy (Green) frictions.
.078 steels. Also the thickest .215 apply ring.
Sonnax recommends the 3/4 load release spring and supplies special one for this input drum.
Note that the SmartTech drum comes with their input shaft reinforcement ring and a custom overrun piston which fits around that ring. Therefore, you have to use either an old-style aluminum forward piston or the expensive Sonnax billet forward piston.
Alternatively FinishLine Transmissions can sell you their (less expensive) custom overrun piston which will work with the stronger new-style steel forward piston.
.078 steels. Also the thickest .215 apply ring.
Sonnax recommends the 3/4 load release spring and supplies special one for this input drum.
Note that the SmartTech drum comes with their input shaft reinforcement ring and a custom overrun piston which fits around that ring. Therefore, you have to use either an old-style aluminum forward piston or the expensive Sonnax billet forward piston.
Alternatively FinishLine Transmissions can sell you their (less expensive) custom overrun piston which will work with the stronger new-style steel forward piston.
