Harmonic Balancer

HARMONIC BALANCER:

PART No.

ENGINE

HUB SIZE

BAL SIZE

TDC LOC

DESCRIPTION

364709

302-327-350

6-1/4

8 x 1-3/4

10-Deg

Nodular Iron, Off Road

458653

267-305

4-3/8

6-3/4 x 1-11/16

Base Performance

3817173

302-327

6-1/2

8 x 1-11/16

2-Deg

High-Performance

3947708

302-327-350

6-1/2

8 x 1-3/4

10-Deg

Special Hi-Performance

6272221

305-350

4-3/8

6-3/4 x 1-3/16

10-Deg

Base Performance

6272222

350

6-1/4

8 x 1-1/2

Intermediate Performance

6272223

262-307

4-3/8

6-1/8 x 3/4

Base Performance

6272225

400 ONLY

6-1/4

8 x 1-1/2

10-Deg

Intermediate Performance

12555879

350

6-1/2

8 x 1-11/16

10-Deg

Used on LT-1, Z-28, L-82, and ZZ4

NOTE:

All crankshaft snouts measure 1-1/4-inch in diameter.

All engines after 1992 use a separate hub and damper.

PART No.	ENGINE	HUB SIZE	BAL SIZE	TDC LOC	DESCRIPTION
364709	302-327-350	6-1/4	8 x 1-3/4	10-Deg	Nodular Iron, Off Road
458653	267-305	4-3/8	6-3/4 x 1-11/16		Base Performance
3817173	302-327	6-1/2	8 x 1-11/16	2-Deg	High-Performance
3947708	302-327-350	6-1/2	8 x 1-3/4	10-Deg	Special Hi-Performance
6272221	305-350	4-3/8	6-3/4 x 1-3/16	10-Deg	Base Performance
6272222	350	6-1/4	8 x 1-1/2		Intermediate Performance
6272223	262-307	4-3/8	6-1/8 x 3/4		Base Performance
6272225	400 ONLY	6-1/4	8 x 1-1/2	10-Deg	Intermediate Performance
12555879	350	6-1/2	8 x 1-11/16	10-Deg	Used on LT-1, Z-28, L-82, and ZZ4

NOTE:
All crankshaft snouts measure 1-1/4-inch in diameter.
All engines after 1992 use a separate hub and damper.