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 from Ohio: Monday 10/19/2026

$3,962.31

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Overview

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Recommended Parts

Kit/Combo Contents

Q&A

Reviews

Instructions & Calculators

Estimated Ship Date from Ohio: Monday 10/19/2026 Would you rather pick it up?

Kit/Combo Contents

ACDelco 12557840 - ACDelco GM Genuine Parts Harmonic Balancer Fastener Bolts

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

Kit Item Quantity: 1

Chevrolet Performance 12610046 - Chevrolet Performance Composition Head Gaskets

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

Kit Item Quantity: 2

Trick Flow Specialties TFS-21407750 - Trick Flow® Chromoly Pushrods

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 Specialties TFS-30690931 - Trick Flow® by Cometic MLS Exhaust Gaskets

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

Kit Item Quantity: 1

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

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

Kit Item Quantity: 1

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

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 Specialties TFS-92011 - Trick Flow® Cylinder Head Bolt Kits

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

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