Performance Crankshafts

Your crankshaft is one of the most fundamental features in your 1984 Chevrolet K30. It converts linear energy into rotational energy, which enables your wheels to move forward. Your pistons are also attached to the crankshaft and the flywheel. Its safe to say a crankshaft is one of the most important components in your vehicle. Like any other factory part, its not meant to work with your performance upgrades. Your crankshaft especially undergoes a lot of stress and pressure from its continuous use and engine combustion. A performance crankshaft is created to a higher standard. They are designed to handle higher loads and RPMS without cracking, failing, or twisting. When picking a performance crankshaft there are several options available including lightweight options, forged steel, and machined billet. Depending on the power your creating, and your intended use of your 1984 Chevrolet K30 the type of performance crankshaft recommended will vary. Sport Compact Warehouse is your premier source for performance crankshafts. If you have any questions regarding performance cranks, reach out to one of our experienced representatives and we will help you make a more informative decision.

No other engine component is subject to as much stress as the crankshaft. It’s impacted by the explosive force of combustion thousands of times every minute, yet typically will provide many thousands of miles of trouble free service in an unmodified engine. But, hop up the engine for increased horsepower and high RPM use, and that once reliable stock crankshaft can become the pin and your precious engine a very expensive hand grenade.

Many cranks are made of cast iron, which is reliable at factory power levels, but isn’t up to the demands of a performance engine. Also, the constant pounding can cause hard-to-find hairline cracks to develop, and may even cause the crank to bend. If the journals are worn, regrinding may remove the surface case hardening. Don’t run a used OE crank and risk blowing up your engine. Be safe, and make a new performance crankshaft the cornerstone of your build.

We offer performance crankshafts for all popular engines, designed and manufactured by performance crankshaft specialists, in materials and configurations for every use and horsepower output. Cast steel cranks are relatively inexpensive yet can handle some serious power. Next up the ladder in strength and price are forged followed by billet steel cranks. Forged cranks are created by pressure forming heated steel in a die, while billet cranks are CNC machined from solid steel. Regardless of the material, all performance cranks are finish machined to a greater degree of precision than standard replacement cranks.

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Eagle 4350348057LA
Please Note:

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Eagle 4350348057LA Forged Steel Lightweight Crankshaft Internal Balance
for 1984 Chevrolet K30 SILVERADO

$990.47

Save: $129.19
Sale Price:

$861.28

Estimated Ship Date: Today

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In Stock - 3 New In Stock
EngineFit NotesFitment Notes
1984 Chevrolet K30 SILVERADO equipped with
5.7L V8
 
Engine Crankshaft
305/350
 
1984 Chevrolet K30 SILVERADO equipped with
5.7L V8 Engine Crankshaft
305/350
,
Eagle 435030005700
Please Note:

Some images might not represent the actual product

Eagle 435030005700 Forged Steel Crankshaft Internal Balance
for 1984 Chevrolet K30 SILVERADO

$926.98

Save: $120.91
Sale Price:

$806.07

Estimated Ship Date: Today

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In Stock - 4 New In Stock
EngineFit NotesFitment Notes
1984 Chevrolet K30 SILVERADO equipped with
5.7L V8
 
Engine Crankshaft
305/350
 
1984 Chevrolet K30 SILVERADO equipped with
5.7L V8 Engine Crankshaft
305/350
,
Eagle 435032505700
Please Note:

Some images might not represent the actual product

Eagle 435032505700 Forged Steel Crankshaft Internal Balance
for 1984 Chevrolet K30 SILVERADO

$926.98

Save: $120.91
Sale Price:

$806.07

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 4 New In Stock
EngineFit NotesFitment Notes
1984 Chevrolet K30 SILVERADO equipped with
5.7L V8
 
Engine Crankshaft
305/350
 
1984 Chevrolet K30 SILVERADO equipped with
5.7L V8 Engine Crankshaft
305/350
,
Eagle 435034805700
Please Note:

Some images might not represent the actual product

Eagle 435034805700 Forged Steel Crankshaft Internal Balance
for 1984 Chevrolet K30 SILVERADO

$909.33

Save: $118.61
Sale Price:

$790.72

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 3 New In Stock
EngineFit NotesFitment Notes
1984 Chevrolet K30 SILVERADO equipped with
5.7L V8
 
Engine Crankshaft
305/350
 
1984 Chevrolet K30 SILVERADO equipped with
5.7L V8 Engine Crankshaft
305/350
,
Eagle 104544000
Please Note:

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Eagle 104544000 Engine Crankshaft
for 1984 Chevrolet K30 SILVERADO

$409.61

Save: $53.43
Sale Price:

$356.18

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 1 New In Stock
EngineFit NotesFitment Notes
1984 Chevrolet K30 SILVERADO equipped with
7.4L V8
 
Big Block
 
1984 Chevrolet K30 SILVERADO equipped with
7.4L V8 Big Block
,
Eagle 103503480CM
Please Note:

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Eagle 103503480CM Engine Crankshaft
for 1984 Chevrolet K30 SILVERADO

$373.20

Save: $48.68
Sale Price:

$324.52

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 2 New In Stock
EngineFit NotesFitment Notes
1984 Chevrolet K30 SILVERADO equipped with
5.7L V8
 
305/350
 
1984 Chevrolet K30 SILVERADO equipped with
5.7L V8 305/350
,
Eagle 103503480
Please Note:

Some images might not represent the actual product

Eagle 103503480 Cast Steel Crankshaft OE Spec Balance
for 1984 Chevrolet K30 SILVERADO

$340.27

Save: $44.38
Sale Price:

$295.89

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 19 New In Stock
EngineFit NotesFitment Notes
1984 Chevrolet K30 SILVERADO equipped with
5.7L V8
 
Engine Crankshaft
305/350
 
1984 Chevrolet K30 SILVERADO equipped with
5.7L V8 Engine Crankshaft
305/350
,
Eagle 103523480
Please Note:

Some images might not represent the actual product

Eagle 103523480 Cast Steel Crankshaft OE Spec Balance
for 1984 Chevrolet K30 SILVERADO

$339.30

Save: $44.26
Sale Price:

$295.04

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 25 New In Stock
EngineFit NotesFitment Notes
1984 Chevrolet K30 SILVERADO equipped with
5.7L V8
 
Engine Crankshaft
305/350
 
1984 Chevrolet K30 SILVERADO equipped with
5.7L V8 Engine Crankshaft
305/350
,
PRW INDUSTRIES 1745401
Please Note:

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PRW INDUSTRIES 1745401 Engine Crankshaft Main Bearing Cap
for 1984 Chevrolet K30 SILVERADO

$272.73

Save: $35.57
Sale Price:

$237.16

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 5 New In Stock
EngineFit NotesFitment Notes
1984 Chevrolet K30 SILVERADO equipped with
7.4L V8
 
1045 Billet Steel
Main Caps
Straight Caps
HRC 20-25
Set Of 4
 
1984 Chevrolet K30 SILVERADO equipped with
7.4L V8 1045 Billet Steel
Main Caps
Straight Caps
HRC 20-25
Set Of 4
,
PRW INDUSTRIES 1745403
Please Note:

Some images might not represent the actual product

PRW INDUSTRIES 1745403 Engine Crankshaft Main Bearing Cap
for 1984 Chevrolet K30 SILVERADO

$272.73

Save: $35.57
Sale Price:

$237.16

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 1 New In Stock
EngineFit NotesFitment Notes
1984 Chevrolet K30 SILVERADO equipped with
7.4L V8
 
1045 Billet Steel
Main Caps
Splayed Caps
HRC 20-25
Set Of 4
 
1984 Chevrolet K30 SILVERADO equipped with
7.4L V8 1045 Billet Steel
Main Caps
Splayed Caps
HRC 20-25
Set Of 4
,
PRW INDUSTRIES 0945400
Please Note:

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PRW INDUSTRIES 0945400 Engine Crankshaft Main Bearing Cap Girdle
for 1984 Chevrolet K30 SILVERADO

$248.38

Save: $32.40
Sale Price:

$215.98

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 2 New In Stock
EngineFit NotesFitment Notes
1984 Chevrolet K30 SILVERADO equipped with
7.4L V8
 
1045 Billet Steel
Incl. PRW Steel Studs/Nuts/Washers
Limited Machining May Be Required For Proper Fitment
 
1984 Chevrolet K30 SILVERADO equipped with
7.4L V8 1045 Billet Steel
Incl. PRW Steel Studs/Nuts/Washers
Limited Machining May Be Required For Proper Fitment
,
PRW INDUSTRIES 1735002
Please Note:

Some images might not represent the actual product

PRW INDUSTRIES 1735002 Engine Crankshaft Main Bearing Cap
for 1984 Chevrolet K30 SILVERADO

$233.11

Save: $30.41
Sale Price:

$202.70

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 4 New In Stock
EngineFit NotesFitment Notes
1984 Chevrolet K30 SILVERADO equipped with
5.7L V8
 
1045 Billet Steel
22 Degree Splayed Caps
HRC 20-25
 
1984 Chevrolet K30 SILVERADO equipped with
5.7L V8 1045 Billet Steel
22 Degree Splayed Caps
HRC 20-25
,
PRW INDUSTRIES 1735001
Please Note:

Some images might not represent the actual product

PRW INDUSTRIES 1735001 Engine Crankshaft Main Bearing Cap
for 1984 Chevrolet K30 SILVERADO

$223.16

Save: $29.11
Sale Price:

$194.05

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 3 New In Stock
EngineFit NotesFitment Notes
1984 Chevrolet K30 SILVERADO equipped with
5.7L V8
 
1045 Billet Steel
4 Bolt Replacement Style w/Flat Surface Mount
HRC 20-25
 
1984 Chevrolet K30 SILVERADO equipped with
5.7L V8 1045 Billet Steel
4 Bolt Replacement Style w/Flat Surface Mount
HRC 20-25
,
PRW INDUSTRIES 1735003
Please Note:

Some images might not represent the actual product

PRW INDUSTRIES 1735003 Engine Crankshaft Main Bearing Cap
for 1984 Chevrolet K30 SILVERADO

$203.03

Save: $26.48
Sale Price:

$176.55

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 5 New In Stock
EngineFit NotesFitment Notes
1984 Chevrolet K30 SILVERADO equipped with
5.7L V8
 
1045 Billet Steel
2 Bolt To 4 Bolt Block
Straight Holes
HRC 20-25
 
1984 Chevrolet K30 SILVERADO equipped with
5.7L V8 1045 Billet Steel
2 Bolt To 4 Bolt Block
Straight Holes
HRC 20-25
,
COMETIC C5379
Please Note:

Some images might not represent the actual product

COMETIC C5379 Rear Main Seal Works w/ Wet or Dry Sump
for 1984 Chevrolet K30 SILVERADO

$94.12

Save: $12.28
Sale Price:

$81.84

Estimated Ship Date: Today

In Stock - 12 New In Stock
EngineFit NotesFitment Notes
1984 Chevrolet K30 SILVERADO equipped with
L
 
Engine Crankshaft Seal
 
1984 Chevrolet K30 SILVERADO equipped with
L Engine Crankshaft Seal
,
SCAT FP-454-SFI
Please Note:

Some images might not represent the actual product

SCAT FP-454-SFI Extra Thick Flexplate 168 Tooth External Long Part Number: F1980
for 1984 Chevrolet K30 SILVERADO

$90.87

Save: $11.85
Sale Price:

$79.02

Estimated Ship Date: Today

In Stock - 13 New In Stock
EngineFit NotesFitment Notes
1984 Chevrolet K30 SILVERADO equipped with
7.4L V8 Gas OHV
 
TransmissionControlTypeName: Automatic, With 2-Piece Rear Main Seal Shaft, With Externally Balanced Big Block Engine
Cab & Chassis 2-Door
 
1984 Chevrolet K30 SILVERADO equipped with
7.4L V8 Gas OHV TransmissionControlTypeName: Automatic, With 2-Piece Rear Main Seal Shaft, With Externally Balanced Big Block Engine
Cab & Chassis 2-Door
,
COMETIC C15560
Please Note:

Some images might not represent the actual product

COMETIC C15560 Engine Crankshaft Seal
for 1984 Chevrolet K30 SILVERADO

$89.61

Save: $11.69
Sale Price:

$77.92

Estimated Ship Date: Today

In Stock - 8 New In Stock
EngineFitment Notes
1984 Chevrolet K30 SILVERADO equipped with
L
 
1984 Chevrolet K30 SILVERADO equipped with
L
,
SCAT FP-350L-153-SFI
Please Note:

Some images might not represent the actual product

SCAT FP-350L-153-SFI Extra Thick Flexplate 153 Tooth External 1-Piece Rear Seal Long Part Number: F1980
for 1984 Chevrolet K30 SILVERADO

$89.40

Save: $11.66
Sale Price:

$77.74

Estimated Ship Date: Today

In Stock - 8 New In Stock
EngineFit NotesFitment Notes
1984 Chevrolet K30 SILVERADO equipped with
5.7L V8 Gas OHV
 
TransmissionControlTypeName: Automatic, With 1-Piece Rear Main Seal Shaft, With Externally Balanced Chevy Small Block Engine
Cab & Chassis 2-Door
 
1984 Chevrolet K30 SILVERADO equipped with
5.7L V8 Gas OHV TransmissionControlTypeName: Automatic, With 1-Piece Rear Main Seal Shaft, With Externally Balanced Chevy Small Block Engine
Cab & Chassis 2-Door
,
COMETIC C5682
Please Note:

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COMETIC C5682 Rear Main Seal
for 1984 Chevrolet K30 SILVERADO

$35.19

Save: $4.59
Sale Price:

$30.60

Estimated Ship Date: Today

In Stock - 9 New In Stock
EngineFit NotesFitment Notes
1984 Chevrolet K30 SILVERADO equipped with
L
 
Engine Crankshaft Seal
 
1984 Chevrolet K30 SILVERADO equipped with
L Engine Crankshaft Seal
,
COMETIC C5680
Please Note:

Some images might not represent the actual product

COMETIC C5680 Rear Main Seal
for 1984 Chevrolet K30 SILVERADO

$29.73

Save: $3.88
Sale Price:

$25.85

Estimated Ship Date: Today

In Stock - 11 New In Stock
EngineFit NotesFitment Notes
1984 Chevrolet K30 SILVERADO equipped with
L
 
Engine Crankshaft Seal
 
1984 Chevrolet K30 SILVERADO equipped with
L Engine Crankshaft Seal