Vette – July 2019

Dyno Results

GenX 255 Square Port

Test Engine: GM 6.2L LS3 short block with 10.43:1 compression, Trick Flow GenX® 255

square port cylinder heads (TFS-3261T002-C01), Trick Flow Track Max® hydraulic roller

cam (TFS-32603001), stock L92 intake with 90mm throttle body, Kooks headers with

17 ∕ 8 " primaries, and dual exhaust with 3" Flowmaster muffl ers.

Airfl ow Results

GenX 255 Square Port

Lift Value Intake Flow CFM Exhaust Flow CFM

.100" 71 59

.200" 146 113

.300" 231 171

.400" 294 215

.500" 334 240

.600" 363 252

.700" 382 258

Tests conducted at 28" of water (pressure).

Bore size: 4.065"; exhaust with 2" pipe.

To view more airfl ow charts, go to TrickFlow.com and type the part number

you want to see into the Search box and then click “Search.”

TrickFlow.com • 1-330-630-1555

1907VTTF Some parts are not legal for use in California or other states with similar laws/regulations. Please check your state and/or local laws/regulations.

You don’t cut corners or accept compromises.

Use the best parts, like Trick Flow GenX® 255 square

port cylinder heads that can signifi cantly increase the

performance of your GM LS-powered car.

Highlights include LS3-shaped CNC Competition Ported

runners, CNC-profi led combustion chambers, 12° valve

angles, coolant holes that work with all LS head gaskets

and engine blocks, and your choice of standard or

6-bolt mounting patterns—all engineered, machined,

assembled, durability tested, and dyno proven in

the USA to help your car stay ahead of the pack.

Put the Hammer Down.

Your Recipe for GM LS Performance!

New heads are just one component of the horsepower recipe. To make it complete,

you’re going to need some more ingredients.

Track Max® Camshafts

Give your LS an even bigger power boost with a Track Max camshaft. They are
dyno-proven to produce signifi cant power increases over the entire RPM range,
not just a particular RPM.

Active Fuel Management and Variable Valve Timing Delete Kits

The problem: most performance camshafts don’t work on engines equipped
with AFM or VVT. The solution? Ditch them with these delete kits! They include
everything to completely remove AFM and VVT the right way so your engine will
make the power you expect with no hiccups.

Cylinder Head Bolt Kits

Keep combustion where it belongs! These high-quality cylinder head bolt
kits provide consistent clamping force. The bolts are made from premium
quality alloy steel with cold-formed heads and rolled threads. The kit contains
all the bolts you need to install a pair of heads.