BASIC CRANKSHAFT SPECIFICATIONS:

BASIC CRANKSHAFT SPECIFICATIONS

CID

BORE x STROKE

MAIN

ROD

CID

BORE x STROKE

MAIN

ROD

262

3.671 x 3.100

2.45

2.1

305e

3.736 x 3.480

2.45

2.1

265a

3.750 x 3.000

2.30

2.0

305f

3.740 x 3.480

2.45

2.1

265b

3.740 x 3.000

2.45

2.1

307

3.875 x 3.250

2.45

2.1

267

3.500 x 3.480

2.45

2.1

327g

4.001 x 3.250

2.30

2.0

283

3.875 x 3.000

2.30

2.0

327h

4.001 x 3.250

2.45

2.1

302c

4.001 x 3.000

2.30

2.0

350

4.001 x 3.480

2.45

2.1

302d

4.001 x 3.000

2.45

2.1

400

4.126 x 3.750

2.65

2.1

NOTES:

(a) - The first small block, the "265" was built from 1955 through 1957.

(b) - In 1994 a "265" was introduced which had a long rod (5.940-inch) and large journals and a slight smaller bore.

(c) - The "302" which was introduced in 1967 used the small journal "283" crankshaft and the "327" block.

(d) - In 1968 and 1969 the "302" used the "350" block with the large journal crankshaft.

(e)(f) - The "305" had a bore increase in 1985 of 0.004-inch.

(g) - The "327" which was introduced in 1962 used a small journal crankshaft.

(h) - In 1968 the "327" was upgraded with a large journal crankshaft.

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