1970-90 Chevy 454/502 Nodular Flywheel-168 tooth ext balance OE # 3993827
Application:
1970-1990 Chevy 454/502ci V8, 2-piece rear main 3.580" crank bolt pattern
Features:
168 Tooth ring gear
Lighten Billet Street
Externally balanced
11" (12-5/8" clutch pattern)
Zero balance
Made in USA