27/28 SPLINE ( C4, AOD ) (10)
TECH TIP: THE C4 AND THE 4R70W BOTH HAVE A 28 SPLINE COUNT. HOWEVER, THE C4 STYLE ONLY HAS A GROUND HUB OF 1.5″
SPECS: C4, AOD, 3&4 SPEED BORGWARNER, TREMEC T5:
28 SPLINE (1-dead spot = 27 SPLINE)
1.220″ = INTERNAL SPLINE MAJOR DIAMETER
1.5″ = GROUND HUB/SEALING DIAMETER