The Spec 25 transmission is based on our replacement line of Muncie "M22" style 4 speed transmissions. It comes only with a GM style 1.125" diameter by 26 spline input shaft. The output shaft is 32 spline. The main uses the standard General Motors bolt pattern found in all Muncie, Super T10, Saganaw, and GM T5 transmissions. The sealed front bearing retainer has an outside diameter of 4.680". This is the standard GM retainer dimension. All transmissions come with a alloy vent and rollerized 1st speed gear, thrust button case and modular counter gear. Ratios are also available and sanctioned for SCCA A-SEDAN class. Call for A-SEDAN applications. You can order a Spec-25 with a 27 spline output shaft. |
Synchro Assemblies:
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Shifter Shafts: Linkage arms fasten to the shifter shafts with grade 8 5/16-24 bolts and unit comes with adpater clips for later style Muncie Arms. The 5/16 bolt allows for direct compatibility and replacement of Super T10 Transmissions. Shifter shafts are tig welded. Hardware: All hardware is Grade 8. Fill and drain plugs are drilled for safety wire. Transmission comes with a new speedometer fitting or can be blocked off. |
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