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Specials!
ENGINE BLOCKS & COMPONENTS
CHEVROLET SMALL BLOCK QUICK REFERENCE CHART

Part Number

10066098

10051181

10105123

10066034

10051183

10185047

24502501

24502503

Block Material

Cast Iron

Cast Iron

Cast Iron Cast Iron Cast Iron Cast Iron Cast Iron Cast Iron

Cylinder Wall Type

Non -Siamesed

Non -Siamesed

Non -Siamesed

Non -Siamesed

Siamesed

Siamesed

Non-Siamesed

Siamesed

Cylinder Deck Height

9.025"

9.025"

9.025"

9.025"

9.025"

9.025"

9.025"

9.025"

Cylinder Bore Range

3.76"-3.84'

3.870"-4.020"

4.00"-4.030"

4.00"-4.030"

4.000"-4.090

4.000"-4.090"

3.875"-4.030"

3.995"-4.155"

No. Bearing Cap Bolts

2

2

4

4

2

4

4

4

Cap Bolt Orientation

Straight

Straight

Straight

Straight

Straight

Straight

Splayed 20°

Splayed 20°

Bearing Cap Type

Gray Cast Iron

Gray Cast iron

Gray Cast iron

Gray Cast iron

Gray Cast iron

Nodular Cast Iron

8620 Steel

8620 Steel

Crankshaft Journal Dia.

2.45"

2.45"

2.45"

2.45"

2.45"

2.45"

2.45"

2.45"

Oil Sump Type

Wet

Wet

Wet

Wet

Wet

Wet

Wet

Wet

Crankshaft Seal Type

1 piece

1 piece

1 piece

2 piece

1 piece

1 piece

2 piece

2 piece

Design Max. Stroke

3.75"

3.75"

3.75"

3.75"

3.75"

3.75"

3.75"

3.75"

Weight (lbs. - bare) 195 187 181 N/A 187 182 190 208

Design Max. Stroke

3.75"

3.75"

3.75"

3.75"

3.75"

3.75"

3.75"

3.75"

Intended Max Hp @ RPM 350 @ 5700 375 @ 5750 350 @ 5700 350 @ 5700 400 @ 5750 450 @ 6500 650 @ 8500 700 @ 8500
Intended Usage Street Street Street Street Street Amateur Competition Professional Competition Professional Competition
Intended Max Hp @ RPM 350 @ 5700 375 @ 5750 350 @ 5700 350 @ 5700 400 @ 5750 450 @ 6500 650 @ 8500 700 @ 8500

 

Part Number 24502600 24502650 24502495 10185075 10134400 22551788 22551790 12480047
Block Material Cast iron Cast iron Aluminum Aluminum Aluminum Cast iron Cast iron Cast iron
Cylinder Wall Type Siamesed Siamesed Siamesed Siamesed Siamesed Siamesed Siamesed Siamesed
Cylinder Deck Height 9.025" see text 9.525" 9.025" 9.025" 9.025" 9.325" 9.025"
Cylinder Bore Range 3.995"-4.155" 3.980"-4.155" 4.125"-4.155" 3.980"-4.155" 4.117"-4.155" 4.000"-4.155" 4.125"-4.155" 3.980"-4.150"
No. Bearing Cap Bolts 4 4 4 4 4 4 4 4
Cap Bolt Orientation Splayed 20° Splayed 20° Splayed 20° Splayed 18 ° Splayed 20° Splayed 18 ° Splayed 18 ° Splayed 20°

Bearing Cap Type

8620 Steel

8620 Steel

8620 Steel

Steel

8620 Steel

Steel

Steel

Nodular Cast Iron

Crankshaft Journal Dia.

2.45"

2.30"

2.65"

2.45"

2.65"

2.45"

2.65"

2.45"

Oil Sump Type

W e t

Dry

Dry

Dry

Dry

W e t

W e t

W e t

Crankshaft Seal Type

2 piece

2 piece

2 piece

2 piece

2 piece

2 piece

2 piece

2 piece

Design Max. Stroke

3.75"

3.25"

4.125"

4.125"

3.75"

4.125"

4.125"

3.75"

Weight (lbs. - bare)

208

167

101

90

89

200

202

208

Intended Max Hp @ RPM

 700 @ 8500 700 @ 8500 850 @ 8000 800 @ 8000 800 @ 8600 500 @ 6800 595 @ 6800 500 @ 6500
Intended Usage Professional Competition Professional Competition Professional Competition Professional Competition Professional Competition Professional Competition Professional Competition Professional Competition
                 
Part Number 12480049 12480157 12480159 12480174 12480175 12480050 12480045 12480046

Block Material

Cast iron Cast iron Cast iron Cast iron Cast iron Cast iron Cast iron Cast iron

Cylinder Wall Type

Siamesed Siamesed Siamesed Siamesed Siamesed Siamesed Siamesed Siamesed

Cylinder Deck Height

9.025" 9.025" 9.025" 9.025" 9.025" 8.700"-8.500" 9.025" 9.025"
Cylinder Bore Range 3.980"-4.150" 4.177"-4.150" 4.177"-4.150" 3.980"-4.150" 4.117"-4.155" 3.900"-4.190" 4.117"-4.155" 4.117"-4.155"

No. Bearing Cap Bolts

4
4
4
4
4
4
4
4
Cap Bolt Orientation Splayed 20° Splayed 20° Splayed 20° Splayed 20° Splayed 20° Splayed 20° Splayed 17° Splayed 17°

Bearing Cap Type

Nodular Cast Iron
Nodular Cast Iron
Nodular Cast Iron
 8620 Steel 8620 Steel 8620 Steel 8620 Steel 8620 Steel

Crankshaft Journal Dia.

2.65"
2.45"
2.65"
2.45"
2.45"
2.30"
2.30"
2.45"

Oil Sump Type

Wet
Wet
Wet
Wet
Wet
Dry
Dry
Dry

Crankshaft Seal Type

2 piece
2 piece
2 piece
1 piece
1 piece
2 piece
2 piece
2 piece

Design Max. Stroke

3.75"
3.75"
3.75"
3.75"
3.75"
3.48"
3.75"
3.75"

Weight (lbs. - bare)

208
196
196
208
196
216
192
192

Intended Max Hp @ RPM

500 @ 6500
500 @ 6500
500 @ 6500
500 @ 6500
500 @ 6500
700 @ 6500
700 @ 6500
700 @ 6500

Intended Usage

Amateur Professional
Amateur Professional
Amateur Professional
Amateur Professional
Amateur Professional
Professional
Competition
Professional
Competition
Professional
Competition

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