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Rotating Assemblies

When you're ready to get serious about your engine, check out our massive selection of custom rotating assemblies. Our engine rotating kits provide the perfect combination of pistons, connecting rods, and crankshafts to optimize power and durability, without maxing out your budget. We've got the rotating kits for a wide variety of applications from small block Chevys to flathead Fords and everything in between. Take the guesswork out of picking engine components - we'll help you pick out the perfect rotating kit for your ride.

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1939-53 Flathead Ford Rotating Assembly, 286 C.I.
1939-53 Flathead Ford Rotating Assembly, 286 C.I.
$1,899.99
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Labor To Side Clearance Rods, Balance Rotating Assembly, 350/377 Kits
Labor To Side Clearance Rods, Balance Rotating Assembly, 350/377 Kits
$149.99
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Labor To Side Clearance Rods, Balance Rotating Assembly, 383/400 Kits
Labor To Side Clearance Rods, Balance Rotating Assembly, 383/400 Kits
$219.99
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1939-53 Flathead Ford Rotating Assembly, 274 C.I.
1939-53 Flathead Ford Rotating Assembly, 274 C.I.
$1,899.99
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SB Chevy Rotating Assembly, 350 Flat Top-4 Valve Relief, 5.7 Rod
SB Chevy Rotating Assembly, 350 Flat Top-4 Valve Relief, 5.7 Rod
$579.99 $569.99
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SB Chevy Rotating Assembly, 350 Flat Top-2 Valve Relief, 6 Rod
SB Chevy Rotating Assembly, 350 Flat Top-2 Valve Relief, 6 Rod
$624.99 $599.99
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1939-53 Flathead Ford Rotating Assembly, 304 C.I.
1939-53 Flathead Ford Rotating Assembly, 304 C.I.
$1,899.99
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Forged SB Chevy Rotating Assembly, 383 Flat Top, H-Beam, 6 Rod
Forged SB Chevy Rotating Assembly, 383 Flat Top, H-Beam, 6 Rod
$1,549.99 $1,499.99
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Speedway Small Block Ford 347 Stroker Kits, I-Beam Rods
Speedway Small Block Ford 347 Stroker Kits, I-Beam Rods
$1,099.99 $999.99
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Premium Small Block Chevy Rotating Assembly, 350 Flat Top, 6 Inch Rods
Premium Small Block Chevy Rotating Assembly, 350 Flat Top, 6 Inch Rods
$849.99 $839.99
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Premium Small Block Chevy Rotating Assembly, 383 Flat Top, 6 Inch Rods
Premium Small Block Chevy Rotating Assembly, 383 Flat Top, 6 Inch Rods
$899.99 $869.99
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Premium Small Block Chevy Rotating Assembly, 400 Flat Top, 6 Inch Rods
Premium Small Block Chevy Rotating Assembly, 400 Flat Top, 6 Inch Rods
$924.99 $909.99
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Speedway Small Block Ford 396 Stroker Kits, H-Beam Rods
Speedway Small Block Ford 396 Stroker Kits, H-Beam Rods
$1,299.99
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SB Chevy Rotating Assembly, 400 Flat Top-2 Valve Relief, 5.7 Rod
SB Chevy Rotating Assembly, 400 Flat Top-2 Valve Relief, 5.7 Rod
$599.99
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SB Chevy Rotating Assembly, 350 Flat Top-2 Valve Relief, 5.7 Rod
SB Chevy Rotating Assembly, 350 Flat Top-2 Valve Relief, 5.7 Rod
$599.99 $589.99
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SB Chevy Rotating Assembly, 383 Flat Top-2 Valve Relief, 5.7 Rod
SB Chevy Rotating Assembly, 383 Flat Top-2 Valve Relief, 5.7 Rod
$624.99 $609.99
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Machining Labor, 350/383 Chevy Balance & Side Clearance 6 Inch Rods
Machining Labor, 350/383 Chevy Balance & Side Clearance 6 Inch Rods
$219.99
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Machining Labor, 383 Chevy Balance & Side Clearance 5.7 Inch Rods
Machining Labor, 383 Chevy Balance & Side Clearance 5.7 Inch Rods
$219.99
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SB 383 Chevy Rotating Assem., One Piece, Flat Top-2 Valve, 5.7 Rod
SB 383 Chevy Rotating Assem., One Piece, Flat Top-2 Valve, 5.7 Rod
$624.99 $609.99
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Premium SB Chevy Rotating Assembly, 383 .100 Dome, 5.7 In Rods
Premium SB Chevy Rotating Assembly, 383 .100 Dome, 5.7 In Rods
$869.99
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Premium SB Chevy Rotating Assembly, 383 .150 Dome, 6 In Rods
Premium SB Chevy Rotating Assembly, 383 .150 Dome, 6 In Rods
$899.99
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SB Chevy Rotating Assembly, 377 Flat Top-2 Valve Relief, 5.7 Rod
SB Chevy Rotating Assembly, 377 Flat Top-2 Valve Relief, 5.7 Rod
$599.99
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Premium SB Chevy Rotating Assembly, 350 .200 Dome, 5.7 In Rods
Premium SB Chevy Rotating Assembly, 350 .200 Dome, 5.7 In Rods
$849.99
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Forged Street SB Chevy 383 Rotating Assembly, 5.7 In I-Beam Rods
Forged Street SB Chevy 383 Rotating Assembly, 5.7 In I-Beam Rods
$1,399.99
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Forged Street SB Chevy 383 Rotating Assembly, 6 In I-Beam Rods
Forged Street SB Chevy 383 Rotating Assembly, 6 In I-Beam Rods
$1,484.99
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Street SB Chevy 383 Rotating Assembly, Dish Dome, 5.7 In Rod
Street SB Chevy 383 Rotating Assembly, Dish Dome, 5.7 In Rod
$779.99
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Premium SB Chevy Rotating Assembly, 350 Flat Top, 5.7 In Rods
Premium SB Chevy Rotating Assembly, 350 Flat Top, 5.7 In Rods
$749.99
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SB 350 Chevy Rotating Assem., One Piece, Flat Top-2 Valve, 6 In. Rod
SB 350 Chevy Rotating Assem., One Piece, Flat Top-2 Valve, 6 In. Rod
$649.99 $639.99
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Forged Small Block Chevy Rotating Assembly, 350 Dome, H-Beam, 6 Rod
Forged Small Block Chevy Rotating Assembly, 350 Dome, H-Beam, 6 Rod
$1,549.99 $1,499.99
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Premium SB Chevy Rotating Assembly, 400 .150 Dome, 6 In Rods
Premium SB Chevy Rotating Assembly, 400 .150 Dome, 6 In Rods
$949.99
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Dirt Late Model Modified Pavement Late Model Stock Car Sprint Car Sport Mod Hobby Stock
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KRC Power Steering KRC Power Steering Scat Scat Speedway Speedway
Product Line
KRC Power Steering Pro Crank Hubs Scat 9000 Series Cast Rotating Assemblies Speedway Made To Order Labor Options Speedway Rotating Assemblies
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Street Rod Classic Truck Oval Track Muscle Car Drag Racing T-Bucket Open Wheel Modern Truck Modern Muscle
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$1000 - $100000 $750 - $1000 $500 - $750 $125 - $250 $0 & up
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350 Chevy Small Block V8 383 Chevy Small Block V8 400 Chevy Small Block V8 377 Chevy Small Block V8 434 Chevy Small Block V8 302 Ford Small Block V8 421 Chevy Small Block V8 1939-48 Ford Flathead V8 1949-53 Ford Flathead V8 347 Ford Small Block V8 395 Chevy Small Block V8 305 Chevy Small Block V8 429 Ford Big Block V8 351W Ford Small Block V8 396 Ford Small Block V8 460 Ford Big Block V8 327 Ford Small Block V8

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Piston Material
Hypereutectic Aluminum Forged Aluminum
Connecting Rod Type
H-Beam I-Beam
Connecting Rod Length
6.000" 5.700" 5.400" 5.090" 5.956"
Crankshaft Material
Cast Steel Forged 4340 Steel
Rear Main Seal Style
2-piece 1-piece
Main Journal Style
350 mains 400 mains
Piston Style
Dome Flat Top Dish Flat Top w/ 2 valve reliefs Flat Top w/ 4 valve reliefs Inverted Dome
Dome Height
.068 .100 .150 .163 .180 .200 .218 .275 .283 .400 .465
Piston Diameter
4.00 4.030 4.040 4.060 4.125 4.145 4.155 4.165 4.185
Piston Ring Style
C A E
Piston Weight
406 410 411 415 420 422 425 427 429 430 433 434 435 439 441 444 450 452 460 463 464 465 469 475 476 479 483 485 486 492 497 499 500 501 505 510 512 514 522 525 526 528 535 541 550 564 580 583 600 605 645 660 670 676
Wrist Pin Weight
102 125 132 133 135 143 145
Wrist Pin Diameter
.9120 .9272
Stroke
3.00 3.25 3.40 3.48 3.75 3.85 3.875 4.00 4.125 4.25
Connecting Rod Material
Forged 4340 Steel Forged 5140 Steel
Connecting Rod Weight
585 588 590 605 620 622 624 629 634 638 646
Connecting Rod Bolt Diameter
7/16" 3/8" 5/16"
Main Journal Diameter
2.448" 2.650 2.648
Rod Journal Diameter
2.10" 2.00"
Bearing Construction
Bi-metal
Bearing Undersize
Standard
Narrowed Bearing
Yes No
Coated Bearing
No
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