What transmissions with overdrive would be interchangeable with the 3 speed Turbo 350 in a 1983 Chevy Silverado truck?
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M$3 Answers
According to Zach Farah, owner of Gearstar "For our purposes we decided on a Gearstar Level 3 4L60. Basically an improved version of the 700-R4, this transmission doesn’t require a computer like any of the later transmissions with an “E” suffix (4L60E as an example). Thanks to a variety of modifications and the Yank lockup converter this transmission is tough enough to endure aggressive launches from a dead stop yet the overdrive gear and lockup feature make it perfect for highway cruising. This package is recommended for 350/355/383/396/400/454 naturally aspirated Chevrolet engines producing 450hp.
Modifications include:
■Yank 10-inch Lockup Racing with stall speeds ranging from 2,600-4,500 rpm for a stronger launch from a standing start while retaining the advantages provided by the lockup feature.
■Improved reactor holding capacity from ALTO Redline racing frictions and band, hardened steels, expanded capacity direct clutch drum, expanded capacity forward clutch pack, and four-clutch overdrive pack.
■A combination of TransGo and Gearstar reprogramming shift kits, Corvette servo and Sonnax “Superhold” 3-4 Servo to provide firm shifts that are timed appropriately.
■A13-vane, high-output pump and 0.500-inch boost valve for higher and more consistent hydraulic pressure.
■For increased strength a 300M hardened steel shaft and hardened expanded capacity drum, monster sun gear shell, and extreme duty springs and sprags."
Owner - Kidd Mechanical, LLC
http://www.hotrod.com/techarticles/113_0704_700_r4_transmission/photo_04.ht...
http://www.gearstartransmission.net/articles/details.php?unid=320
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M$
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M$
Personal knowledge.
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M$
good answer!