Trick Flow® GenX® Top-End Engine Kits for GM LS TFS-K326-580-520

Name: Trick Flow® GenX® Top-End Engine Kits for GM LS
Brand: Trick Flow Specialties
SKU: TFS-K326-580-520
Price: 3962.31 USD
Availability: InStock
Rating: 3.75 (4 reviews)

3.75 out of 5 stars ( 4 )

Part Number: TFS-K326-580-520

$3,962.31

Trick Flow® GenX® Top-End Engine Kits for GM LS

Head Combo, GenX® Top-End, 580hp, 520 ft-lbs. Torque, GM, LS3, Square Port, Kit
See More Specifications | Check the Fit

Trick Flow® GenX® Top-End Engine Kits for GM LS TFS-K326-580-520

TFS-K326-580-520

3.75 out of 5 stars ( 4 )

Part Number: TFS-K326-580-520

Estimated Ship Date: Nov 13, 2026

$3,962.31

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Overview

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Recommended Parts

Kit/Combo Contents

Q&A

Reviews

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Estimated Ship Date: Nov 13, 2026 Would you rather pick it up?

Kit/Combo Contents

ACDelco GM Genuine Parts Harmonic Balancer Fastener Bolts 12557840

Harmonic Balancer Bolt, Steel, Flanged Hex, Coarse Thread, Natural, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Pontiac, Saab, Each

Kit Item Quantity: 1

Chevrolet Performance Composition Head Gaskets 12610046

Head Gasket, MLS, 4.080 in. Bore, .051 in. Compressed Thickness, Chevy, Small Block, LS3/L92, Each

Kit Item Quantity: 2

Trick Flow® Chromoly Pushrods TFS-21407750

Pushrods, 5/16 in. Diameter, 7.750 in. Long, 4130 Chromoly, 0.080 in. Wall, For Guideplates, Set of 16

Kit Item Quantity: 1

Trick Flow® by Cometic MLS Exhaust Gaskets TFS-30690931

Exhaust Gaskets, Exhaust Manifold, Round Port, Multi-Layer Steel, 0.030 in. Thick, Chevy, LS, Pair

Kit Item Quantity: 1

Trick Flow® Track Max® Hydraulic Roller Camshafts for GM LS TFS-32603001

Camshaft, Hydraulic Roller, Advertised Duration 278/286, Lift .625/.625, Lobe Sep. 113, GM LS, Each

Kit Item Quantity: 1

Trick Flow® GenX® 255 Cylinder Heads for GM LS3 TFS-3261T002-C01

Cylinder Head, GenX® 255, CNC Comp Port, Assembled, 69cc CNC Chamber, 450 Lb. Springs, Ti Retain, GM LSX, Each

Kit Item Quantity: 2

Trick Flow® Cylinder Head Bolt Kits TFS-92011

Cylinder Head Bolt Kit, Hex Head, Chromoly, Black Oxide, Torque-to-Yield, 2004+ Short Style, GM LS, Each

Kit Item Quantity: 1

Overview

Brand:

Trick Flow Specialties

Manufacturer's Part Number:

TFS-K326-580-520

Part Type:

Top End Kits

Product Line:

Trick Flow® GenX® Top-End Engine Kits for GM LS

Summit Racing Part Number:

TFS-K326-580-520

Item Number:

2578592

Cylinder Heads Included:

Yes

Camshaft Included:

Yes

Camshaft Type:

Hydraulic Roller Tappet

Duration at 050 inch Lift:

230 int./238 exh.

Advertised Duration:

278 int./286 exh.

Valve Lift with Factory Rocker Arm Ratio:

0.625 int./0.625 exh.

Intake Manifold Included:

Carburetor Included:

Throttle Body Included:

Fuel Rails Included:

Fuel Injectors Included:

Timing Chain and Gears Included:

Lifters Included:

Gaskets Included:

Yes

Cylinder Head Style:

Assembled

Cylinder Head Material:

Cast aluminum

Cylinder Head Color:

Natural

Combustion Chamber Volume (cc):

CNC-Machined Combustion Chamber:

Yes

Intake Runner Volume (cc):

255cc

CNC-Machined Intake Runner:

Yes

CNC-Machined Exhaust Runner:

Yes

Intake Port Location:

Standard

Exhaust Port Location:

Standard

Spark Plug Style:

Angle

Intake Valves Included:

Yes

Intake Valve Diameter (in.):

2.165 in.

Exhaust Valves Included:

Yes

Exhaust Valve Diameter (in.):

1.600 in.

Valve Springs Included:

Yes

Outside Diameter of Outer Spring (in.):

1.300 in.

Damper Spring Included:

Number of Springs Per Valve:

Dual

Retainers Included:

Yes

Retainer Material:

Titanium

Locks Included:

Yes

Lock Style:

7 degree

Valve Stem Seals Included:

Yes

Valve Stem Seal Style:

Positive stop

Rocker Arms Included:

Rocker Arm Studs Included:

Rocker Arm Nuts Included:

Guideplates Included:

Pushrods Included:

Yes

Valve Covers Included:

Accessory Bolt Holes Drilled:

Yes

Valve Guides Included:

Yes

Valve Guide Material:

Powdered metal

Valve Seats Machined:

Yes

Valve Seat Material:

Ductile iron

Steam Holes Drilled:

Oiling Style:

Through pushrod

Machined for O-Ring:

Heat Crossover:

Quantity:

Sold as a kit.

Notes:

Camshaft specs are 278/286 duration, .625 in./.625 in. lift, 113 lobe separation angle. Trick Flow dyno-tested this kit using a GM 6.2L LS3 10.43:1 compression engine, a L92 90mm intake manifold, Kooks headers with 1 7/8 in. primaries, and dual exhaust with 3 in. Flowmaster mufflers.

Trick Flow® GenX® Top-End Engine Kits for GM LS

Are you still confused as to which parts you need to get the performance you want? Quit wasting time and second-guessing yourself. Trick Flow® has already done the work for you with GenX® Top-End Engine kits for GM LS. Designed and dyno-tested to deliver the performance you crave for less than purchasing the parts separately, these kits save time and money!

What's in these GenX® Top-End Engine kits?

* A pair of Trick Flow® GenX® street/strip cylinder heads
* A specially matched hydraulic roller cam
* Some kits contain roller rocker arms
* Pushrods
* Head gaskets
* Head bolts
* Exhaust gaskets
* Balancer bolt