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    CR 641SI

TECH DATA

SUITABLE FOR ENGINES

CROSS REFERENCE

AVAILABLE SIZES

TECH DATA

SUITABLE FOR ENGINES

CROSS REFERENCE

AVAILABLE SIZES

Upper

Lower

Oty.

Position

Crankshaft

Housing

Part No.

Max Wall Thickness

SI 6 53.34 / 53.31 56.52 / 56.51 21.3 1.577

Engine Results

ENGINE MAKER

ENGINE CONFIG

BORE X STORKE

DETAILS

General Motors

4.3L / 4291CC V8 989v

93.24 X 79.0 mm mm

[RACE] 262, 265, 267, 302, 305, 307, 327, 350 OHV 16v V8 Small Block (68-96) 2.100"" Large journal

General Motors

5.7L / 5666CC V8 1080v

99.0 X 92.0 mm mm

[RACE] 5.7L 348 OHV 16v Gen III LS1

General Motors

6L / 5967CC V8 1139v

101.6 X 92.0 mm mm

[RACE] 6.0L OHV 16v Gen IV L76, L98, LS2

General Motors

6.6L / 6555CC V8 1032v

104.78 X 95.2 mm mm

[RACE] 6.6L 400 OHV 16v V8 Small Block

Mercury Marine

3.000000L / 3000CC4 79543v

101.6 X 91.4 mm mm

181,

General Motors

3.000000L / 3000CC4 79444v

101.6 X 91.4 mm mm

181,

General Motors

4.3L / 4293CC V8

93.2 X 78.7 mm

G,Chevrolet OHV

General Motors

4.3L / 4321CC V8 990v

95.25 X 76.2 mm mm

L99, OHV

General Motors

4.4L / 4375CC V8

88.9 X 88.4 mm

Chevrolet OHV

General Motors

4.4L / 4375CC V8

88.9 X 88.4 mm

J,Chevrolet OHV

General Motors

4.4L / 4389CC V8

88.9 X 88.39 mm

L39 OHV

Chevrolet

4.4L / 4389CC V8

88.9 X 88.39 mm

L39 OHV

General Motors

4.8L / 4785CC L6

98.4 X 104.8 mm

T,Chevrolet OHV

General Motors

4.8L / 4786CC L6

98.4 X 104.8 mm

T,Chevrolet OHV

General Motors

4.8L / 4800CC V8 79794v

96.0 X 83.0 mm mm

294 Vortec,

General Motors

4.8L / 4811CC V8

96.012 X 83.058 mm

LR4 OHV

General Motors

4.8L / 4811CC V8

96.01 X 83.06 mm

LY2 OHV

General Motors

4.8L / 4811CC V8

96.01 X 83.06 mm

L20 OHV

Chevrolet

4.8L / 4811CC V8

96.012 X 83.058 mm

LR4 OHV

Chevrolet

4.8L / 4811CC V8

96.01 X 83.06 mm

LY2 OHV

Chevrolet

4.8L / 4811CC V8

96.01 X 83.06 mm

L20 OHV

General Motors

4.8L / 4818CC V8

96 X 83 mm

C,Vortec OHV

General Motors

4.8L / 4818CC V8

96 X 83 mm

V,Vortec OHV

General Motors

4.8L / 4818CC V8

96 X 83 mm

L20,A,Vortec OHV

General Motors

4.8L / 4818CC V8

96 X 83 mm

L20,F,Vortec OHV

General Motors

4.9L / 4949CC V8

101.6 X 76.2 mm

OHV

General Motors

5L / 4998CC V8

94.9 X 88.4 mm

Chevrolet OHV

General Motors

5L / 4998CC V8

94.9 X 88.4 mm

Chevrolet OHV

General Motors

5L / 4998CC V8

94.9 X 88.4 mm

LE9,H,Chevrolet OHV

General Motors

5L / 4998CC V8

94.9 X 88.4 mm

L03,E,Chevrolet OHV

General Motors

5L / 4998CC V8

94.9 X 88.4 mm

LG9,G,Chevrolet OHV

General Motors

5L / 4998CC V8

94.9 X 88.4 mm

LG9,U,Chevrolet OHV

General Motors

5L / 4998CC V8

94.9 X 88.4 mm

LF3,F,Chevrolet OHV

General Motors

5L / 4998CC V8

94.9 X 88.4 mm

L03,H,Chevrolet OHV

General Motors

5L / 4998CC V8

94.9 X 88.4 mm

L30,M,Vortec OHV

General Motors

5L / 4998CC V8

94.9 X 88.4 mm

LG3,Q,Chevrolet OHV

General Motors

5L / 4998CC V8

94.9 X 88.4 mm

LB9,F,Chevrolet OHV

General Motors

5L / 4998CC V8

94.9 X 88.4 mm

LU5,7,Chevrolet OHV

General Motors

5L / 4998CC V8

94.9 X 88.4 mm

LU5,S,Chevrolet OHV

General Motors

5L / 4998CC V8

94.9 X 88.4 mm

L69,G,Chevrolet OHV

General Motors

5L / 4998CC V8

94.9 X 88.4 mm

L69,7,Chevrolet OHV

General Motors

5L / 5002CC V8

94.9 X 88.4 mm

LG4 OHV

General Motors

5L / 5002CC V8

94.9 X 88.4 mm

LO3 OHV

Chevrolet

5L / 5002CC V8

94.9 X 88.4 mm

LG4 OHV

Chevrolet

5L / 5002CC V8

94.9 X 88.4 mm

LB9 OHV

Chevrolet

5L / 5002CC V8

94.9 X 88.4 mm

LO3 OHV

Pontiac

5L / 5002CC V8

94.9 X 88.4 mm

LG4 OHV

Pontiac

5L / 5002CC V8

94.9 X 88.4 mm

LO3 OHV

Pontiac

5L / 5002CC V8

94.9 X 88.4 mm

LB9 OHV

Cadillac

5L / 5002CC V8

94.9 X 88.4 mm

LO3 OHV

Oldsmobile

5L / 5002CC V8

94.9 X 88.4 mm

LO3 OHV

General Motors

5L / 5031CC V8

98.4 X 82.6 mm

DA OHV

General Motors

5L / 5031CC V8

98.4 X 82.6 mm

OHV

General Motors

5L / 5031CC V8

98.4 X 82.6 mm

DN OHV

General Motors

5L / 5031CC V8

98.4 X 82.6 mm

X OHV

General Motors

5L / 5031CC V8

98.4 X 82.6 mm

B OHV

General Motors

5L / 5031CC V8

98.4 X 82.6 mm

H OHV

General Motors

5L / 5031CC V8

98.4 X 82.6 mm

DB OHV

General Motors

5L / 5031CC V8

98.4 X 82.6 mm

F OHV

General Motors

5L / 5031CC V8

98.4 X 82.6 mm

U OHV

General Motors

5L / 5031CC V8

98.4 X 82.6 mm

A OHV

General Motors

5L / 5031CC V8

98.4 X 82.6 mm

CCA OHV

General Motors

5L / 5031CC V8

98.4 X 82.6 mm

DE OHV

General Motors

5L / 5031CC V8

98.4 X 82.6 mm

E OHV

General Motors

5L / 5031CC V8

98.4 X 82.6 mm

P OHV

General Motors

5L / 5031CC V8

98.4 X 82.6 mm

CCC OHV

General Motors

5.3L / 5328CC V8 79897v

96.0 X 92.0 mm mm

325 Vortec Hybrid,

General Motors

5.3L / 5328CC V8

96 X 92 mm

LH9,P,Vortec OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

LMG,0,Vortec OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

L59,Z,Vortec OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

L59,Z,Vortec OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

LMG,0,Vortec OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

LC9,7,Vortec OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

LC9,7,Vortec OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

Vortec OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

LMF,4,Vortec OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

LMG,0,Vortec OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

LC9,3,Vortec OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

LM7 OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

L59 OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

LMG OHV

General Motors

5.3L / 5328CC V8

96.01 X 92 mm

LMF OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

LH6 OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

LC9 OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

LMG OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

LMF,4,Vortec OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

LY5Vortec OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

Vortec OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

LH8,L,Vortec OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

LM7,T,Vortec OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

LH9,P,Vortec OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

LM7,T,Vortec OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

LS4,C OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

LH6,M,Vortec OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

L33,B,Vortec OHV

General Motors

5.3L / 5328CC V8

96 X 92 mm

LY5,J,Vortec OHV

Chevrolet

5.3L / 5328CC V8

96 X 92 mm

LM7 OHV

Chevrolet

5.3L / 5328CC V8

96 X 92 mm

L59 OHV

Chevrolet

5.3L / 5328CC V8

96 X 92 mm

LMG OHV

Chevrolet

5.3L / 5328CC V8

96 X 92 mm

LMF OHV

Cadillac

5.3L / 5328CC V8

96 X 92 mm

LM7 OHV

Hummer

5.3L / 5328CC V8

96 X 92 mm

LH9 OHV

General Motors

5.4L / 5358CC V8

101.6 X 82.5 mm

OHV

General Motors

5.4L / 5358CC V8

101.6 X 82.5 mm

FJ OHV

General Motors

5.4L / 5358CC V8

101.6 X 82.5 mm

MA OHV

General Motors

5.4L / 5358CC V8

101.6 X 82.5 mm

E OHV

General Motors

5.4L / 5358CC V8

101.6 X 82.5 mm

HE OHV

General Motors

5.7L / 5665CC V8

99 X 92 mm

LS1 OHV

General Motors

5.7L / 5665CC V8

99 X 92 mm

LS1 OHV

Holden

5.7L / 5665CC V8

99 X 92 mm

LS1 OHV

Chevrolet

5.7L / 5665CC V8

99 X 92 mm

LS1 OHV

Pontiac

5.7L / 5665CC V8

99 X 92 mm

LS1 OHV

Avanti

5.7L / 5665CC V8

99 X 92 mm

LS1 OHV

Vauxhall

5.7L / 5665CC V8

99 X 92 mm

LS1 OHV

Daewoo

5.7L / 5665CC V8

99 X 92 mm

LS1 OHV

General Motors

5.7L / 5670CC V8

99 X 92 mm

S,Chevrolet OHV

General Motors

5.7L / 5700CC V8 79796v

96.0 X 92.0 mm mm

346 Chevrolet,

Chevrolet

5.7L / 5727CC V8

99 X 93 mm

LT5 DOHC

General Motors

5.7L / 5733CC V8

101.6 X 88.4 mm

LO5 OHV

General Motors

5.7L / 5733CC V8

101.6 X 88.4 mm

L31 OHV

General Motors

5.7L / 5733CC V8

101.6 X 88.4 mm

LM1 OHV

Chevrolet

5.7L / 5733CC V8

101.6 X 88.4 mm

LO5 OHV

Chevrolet

5.7L / 5733CC V8

101.6 X 88.4 mm

L31 OHV

Chevrolet

5.7L / 5733CC V8

101.6 X 88.4 mm

LM1 OHV

Chevrolet

5.7L / 5733CC V8

101.6 X 88.392 mm

L48 OHV

Cadillac

5.7L / 5733CC V8

101.6 X 88.4 mm

LO5 OHV

Cadillac

5.7L / 5733CC V8

101.6 X 88.4 mm

LM1 OHV

AM General

5.7L / 5733CC V8

101.6 X 88.4 mm

LO5 OHV

Oldsmobile

5.7L / 5733CC V8

103 X 86 mm

LO5 OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

4,Chevrolet OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

H,Oldsmobile OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

T,Chevrolet OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

J,Chevrolet OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

T OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

J OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

H OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

A OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

Chevrolet OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

Chevrolet OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

Y OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

V OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

K OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

B OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

L OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

E OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

P,Chevrolet OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

X,Chevrolet OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

Chevrolet OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

M,Chevrolet OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

K,Chevrolet OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

P,Chevrolet OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

Chevrolet OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

Chevrolet OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

L31,R,Vortec OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

Y,Chevrolet OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

L,Chevrolet OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

6,Chevrolet OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

8,Chevrolet OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

V,Chevrolet OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

G,Oldsmobile OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

8,Chevrolet OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

W OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

K,Chevrolet OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

L31,R,Vortec OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

W OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

N,Oldsmobile OHV DIESEL

General Motors

5.7L / 5735CC V8

99 X 92 mm

LS1,G,Chevrolet OHV

General Motors

5.7L / 5735CC V8

99 X 92 mm

S,Chevrolet OHV

General Motors

5.7L / 5735CC V8

101.6 X 88.5 mm

L31,R,Vortec OHV

General Motors

5.7L / 5737CC V8

103.05 X 85.98 mm

LF9 OHV DIESEL

Chevrolet

5.7L / 5737CC V8

103.05 X 85.98 mm

LF9 OHV DIESEL

Buick

5.7L / 5737CC V8

103.05 X 85.98 mm

LF9 OHV DIESEL

Cadillac

5.7L / 5737CC V8

103.05 X 85.98 mm

LF9 OHV DIESEL

Pontiac

5.7L / 5737CC V8

103.05 X 85.98 mm

LF9 OHV DIESEL

Oldsmobile

5.7L / 5737CC V8

103.05 X 85.98 mm

LF9 OHV DIESEL

General Motors

6L / 5967CC V8

101.6 X 92 mm

LY6 OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

L96 OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

LZ1 OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

L76 OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

L76 OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

LQ4,U,Vortec OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

L96,G,Vortec OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

LY6 OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

LY6 OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

L96,G,Vortec OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

LS2,U OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

LFA,5,Vortec OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

LQ4,U OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

LS2,H OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

K,Vortec OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

L76,Y,Vortec OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

LQ9,N,Vortec OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

L96,G,Vortec OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

L96,G,Vortec OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

L96,G,Vortec OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

L96,G,Vortec OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

LZ1,J,Vortec OHV

Chevrolet

6L / 5967CC V8

101.6 X 92 mm

LY6 OHV

Chevrolet

6L / 5967CC V8

101.6 X 92 mm

L76 OHV

Chevrolet

6L / 5967CC V8

101.6 X 92 mm

LFA OHV

Chevrolet

6L / 5967CC V8

101.6 X 92 mm

L96 OHV

Chevrolet

6L / 5967CC V8

101.6 X 92 mm

LZ1 OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

LQ4,U,Vortec OHV

General Motors

6L / 5967CC V8

101.6 X 92 mm

LQ4,U,Vortec OHV

Holden

6L / 5967CC V8

101.6 X 92 mm

L76 OHV

Cadillac

6L / 5967CC V8

101.6 X 92 mm

LZ1 OHV

Vauxhall

6L / 5967CC V8

101.6 X 92 mm

LS2 OHV

Pontiac

6L / 5967CC V8

101.6 X 92 mm

L76 OHV

General Motors

6L / 5998CC V8 79797v

101.6 X 92.0 mm mm

364 Vortec,

General Motors

6.2L / 6162CC V8

103.2 X 92 mm

L94,F,Vortec OHV

General Motors

6.2L / 6162CC V8

103.3 X 92 mm

L9HVortec OHV

General Motors

6.2L / 6162CC V8

103.2 X 92 mm

L9H,2,Vortec OHV

General Motors

6.2L / 6162CC V8

103.25 X 92 mm

L92 OHV

General Motors

6.2L / 6162CC V8

103.25 X 92 mm

L94 OHV

General Motors

6.2L / 6162CC V8

103.25 X 92 mm

L9H OHV

General Motors

6.2L / 6162CC V8

103.2 X 92 mm

LSA,P OHV

General Motors

6.2L / 6162CC V8

103.2 X 92 mm

LS3,W OHV

General Motors

6.2L / 6162CC V8

103.2 X 92 mm

L94 OHV

General Motors

6.2L / 6162CC V8

103.2 X 92 mm

L92 OHV

General Motors

6.2L / 6162CC V8

103.2 X 92 mm

L94 OHV

General Motors

6.2L / 6162CC V8

103.2 X 92 mm

L92,F,Vortec OHV

General Motors

6.2L / 6162CC V8

103.2 X 92 mm

L99,J OHV

General Motors

6.2L / 6162CC V8

103.2 X 92 mm

LS3,W OHV

General Motors

6.2L / 6162CC V8

103.2 X 92 mm

L92,8,Vortec OHV

Cadillac

6.2L / 6162CC V8

103.25 X 92 mm

L92 OHV

Cadillac

6.2L / 6162CC V8

103.25 X 92 mm

L94 OHV

Cadillac

6.2L / 6162CC V8

103.25 X 92 mm

L9H OHV

Chevrolet

6.2L / 6162CC V8

103.25 X 92 mm

L9H OHV

Hummer

6.2L / 6162CC V8

103.25 X 92 mm

L92 OHV

Hummer

6.2L / 6162CC V8

103.25 X 92 mm

L9H OHV

AC

6.2L / 6162CC V8

103.25 X 92 mm

LS9 (6,2L) OHV

General Motors

6.6L / 6555CC V8

104.8 X 95.5 mm

R,Chevrolet OHV

General Motors

6.6L / 6555CC V8

104.8 X 95.5 mm

R OHV

General Motors

6.6L / 6555CC V8

104.8 X 95.5 mm

U OHV

General Motors

6.6L / 6555CC V8

104.8 X 95.5 mm

E OHV

General Motors

6.6L / 6555CC V8

104.8 X 95.5 mm

R OHV

General Motors

6.6L / 6555CC V8

104.8 X 95.5 mm

K OHV

General Motors

6.6L / 6555CC V8

104.8 X 95.5 mm

OHV

General Motors

6.6L / 6555CC V8

104.8 X 95.5 mm

Chevrolet OHV

General Motors

6.6L / 6555CC V8

104.8 X 95.5 mm

U,Chevrolet OHV

General Motors

6.6L / 6555CC V8

104.8 X 95.5 mm

R,Chevrolet OHV

General Motors

6.6L / 6555CC V8

104.8 X 95.5 mm

M,Chevrolet OHV

General Motors

6.6L / 6555CC V8

104.8 X 95.5 mm

X,Chevrolet OHV
Make
Reference

SUPERSEDED BY

CR 641AM

ACL

6B663A-STD

ACL

6B663P-STD

CLEVITE

CB-663A(6)

CLEVITE

CB-663P(6)

FMOGUL

2555CP

FMOGUL

6-2555A

METALEVE

BB-153-J

Part No.

Size

Flange

Notes
CR 641SI
CR 641SI 010 010
CR 641SI 020 020
CR 641SI 030 030
CR 641SI 040 040
CR 641SI 050 050
CR 641SI 060 060