trick flow head stats

23 Degree A luminum Cylinder Heads for Small B lock Chevro let

Product Description

Performance aluminum cylinder heads for the price of cast iron

Dyno tested on a 383 cubic inch engine, our 64cc 23 Degree heads made 460 horsepower and 451 ft.-lbs. of torque—40 more horsepower and 11 ft.-lbs. more torque than the same engine with new GM L98 Corvette heads. The 23 Degree heads also made more power than Dart’s Iron Eagle and World Product’s Sportsman II cast iron heads.

The 23 Degree heads are a direct, high performance replacement for most original equipment factory heads, and accepts most factory accessories. They feature 64cc combustion chambers, 2.02 in./1.60 in. stainless steel valves, hardened exhaust valve seats for unleaded gas, and 195cc intake ports with a high velocity, small cross-section design to promote low rpm torque without sacrificing higher rpm horsepower.

The heads are available with three different spring sizes: 1.26 in. single for cams up to .520 in. lift, 1.47 in. single for cams up to .540 in. lift, and 1.46 in. dual for cams up to .600 in. lift. They come with your choice of 64cc or 72 cc, CNC-profiled combustion chambers for improved airflow and combustion efficiency.

They come fully assembled with valves, valve springs, locks, retainers, rocker arm studs, and guideplates. They’re 50-state emissions-legal and carry CARB E .O . number D-369-4 for use on pollution controlled motor vehicles.

Sold as a kit.

California Air Resources Board Executive Order #D-369-4 for Trick Flow Specialties 23 Degree Aluminum Cylinder Heads for 262-400 c.i.d. Chevrolet Gasoline Engines, Part Numbers TFS-30400001

23 Degree Heads, 64cc Chamber

Heads for Pre 1987 327-350-400 with 1.26 in. single valve springs, pair


Heads for Pre 1987 327-350-400 with 1.46 in. dual valve springs, pair

Heads for 1987-95 350 non-LT1 with 1.26 in. single valve springs, pair


TFS-30400001

TFS-30400002

TFS-30400003

TFS-30400005

TFS-30400006

23 Degree Heads, 64cc CNC-Profiled Chamber






TFS-30400001-CNC

TFS-30400002-CNC

TFS-30400003-CNC

TFS-30400005-CNC

TFS-30400006-CNC

23 Degree Heads, 72cc CNC-Profiled Chamber



TFS-30400012-CNC

TFS-30400013-CNC

Included Parts

Each 23 Degree A luminum Cylinder Head for Small B lock Chevy has:

Two assembled cylinder headsOne pack of eight 5/16 in. guideplates Two packs of eight 3/8 in. rocker arm studsOne pack of 17 head bolt washersOne instruction manual

Recommended Accessories

Rocker Stud G irdles:

These CNC-machined stud girdles help control valve lift and timing changes due to stud flex, allowing more consistent high-rpm performance . Each stud girdle is anodized for an attractive appearance and comes complete with high quality mounting hardware and hardened adjusting nuts. Tall style valve covers required.

3/8 in. Rocker stud girdles, pair 7/16 in. Rocker stud girdles, pair

TFS-30400700TFS-30400701

Copyright© 2001 by Trick F low Specialties®

23 Degree Heads for Small Chevy

Technical Specs

Trick Flow 23 Degree Aluminum Cylinder Heads for SBCTechnical Specifications:

A356-T61 aluminum 64cc or 72cc

195cc 2.07 in. high x 1.26 in. wide

75cc 1.35 in. high x 1.50 in. wide

CNC-profiled, one piece, non-magnetic stainless steel with hardened tips

2.02 in. head diameter, 11/32 in. stem diameter, 4.960 in. OAL

1.60 in. head diameter, 11/32 in. stem diameter, 4.980 in. OAL

Bronze alloy, .500 in. O .D. Viton

Tungsten alloy, compatible with unleaded fuels

1.260 in. Springs1.260 in. O .D. single with damper110 lbs. at 1.700 in. installed height290 lbs. at 1.200 in.360 lbs. per inch spring rate.520 in. max valve lift

Material:Combustion Chamber Volume:Intake Port Volume:Intake Port Dimensions:Exhaust Port Volume:Exhaust Port Dimensions:Valve Type:

Intake Valve:

Exhaust Valve:

Valve Guides:Seals:Valve Seats:Valve Springs:

1.470 in. Springs1.470 in. O .D. single with damper120 lbs. at 1.780 in. installed height300 lbs. at 1.280 in.360 lbs. per inch spring rate.540 in. max valve lift

1.460 in. Springs1.460 in. O .D. double with damper125 lbs. at 1.780 in. installed height376 lbs. at 1.180 in.420 lbs. per inch spring rate.600 in. max valve lift

7 degree stamped steel on all 1.25 in. springs, 7 degree + .050 in. machined steel on all other spring versions

Chromemoly steel 6,500

ARP 3/8 in. included with all heads For use with 5/16 in. hardened pushrods, included with all

heads Yes

Valve Locks:

Valve Retainers:Max rpm:Rocker Studs:Guideplates:

OEM Accessory Holes:

The use of a valvetrain combination that exceeds the maximum valve lift will void the warranty. Piston-to-valve clearance must be checked in all cases.

NOTE:

Recommended Components for 23 Degree Heads

Fel-Pro 7733PT-2 for mild engines up to 4.060 in. boreFel-Pro 1010 for high output engines up to 4.155 in. bore (will not indent aluminum heads)Fel-Pro 1014 with pre-drilled steam holes for 400 engines (must modify heads)

Fel-Pro 1205 Fel-Pro 1404

TFS-30400905 for mild engines up to 4.060 in. bore (pre-1987 only)

ARP-134-3601 (6 pt.) or ARP-134-3701 (12 pt.) ARP-134-4001 (6 pt.) or ARP-234-4301 (12 pt.)

Head Gasket:

Intake Gasket:Exhaust Gasket:Head Gasket K its:

Head Bolts:Head Studs:

ARP-100-9902 Permatex Ultra Black #598BR

Permatex Aviation Form-A-Gasket #3H Loctite Blue #242 for medium strength applications or

Loctite Red #272 for high strength applications

Crane Gold Race 1.5 ratio 11750-16 or 1.6 ratio 11759-16Trick Flow 1.5 ratio TFS-31400510 or 1.6 ratio TFS-31400511Summit 1.5 ratio SUM-G6910 or 1.6 ratio SUM-G6920

Moly Lube:RTV sealer:Thread sealer:Thread locker:

Roller Rocker Arms:

All rockers fit 3/8 in. studs. If you use other brand rockers, you must check them for operating clearances and proper geometry. Stamped steel rockers should be used only with stock or very mild cams.

NOTE:

1/2 in. pipe plug—Aeroquip F CM-3749 (for plugging unused temperature sender hole)

(1/2 in. male to 3/8 in. female)—Aeroquip F CM-2139 (for adapting 3/8 in. temperature sender)

Refer to enclosed instruction manual. Will fit most headers. Check for proper fitment before installing

heads on the engine. Refer to the Checking Header Clearance section in the instruction manual.

The following spark plugs are recommended as a starting point:AC-FR3LSAutolite-324Champion-RC9YCNGK-FR5

Pipe Plugs and Adapters:

Adapter busing

Pushrods:Headers:

Spark Plugs:

Make heat range adjustments based on tuning results. Blower and nitrous applications will require you to run a colder heat range spark plug. Try several heat ranges as needed.

NOTE:

Important Information for Emiss ions Inspection

Trick Flow Specialties 23 Degree Aluminum Heads for 1995 and earlier 262-400 c.i.d. Chevrolet gasoline engines part number TFS-30400001 has been found not to reduce the effectiveness of required vehicle pollution control devices, and are therefore exempt under California Vehicle Section 27156 permitting the advertising, sale, and installation of these parts for the 262-400 c.i.d. small block Chevrolet V8 gasoline engines.

This information is provided with the 23 Degree Cylinder Head. It can be presented at a smog inspection station during a smog check.

For more information contact:

1248 Southeast AvenueTallmadge, OH 44278Sales & Tech: (330) 630-1555Fax: (330) 630-5565

Trick F low Specialties



Rep lacement Parts

Rep lacement Assemb led Heads:Assembled Heads (Single):

TFS-30410001 TFS-30400001, eachTFS-30410001-CNC TFS-30400001-CNC , eachTFS-30410002 TFS-30400002, eachTFS-30410002-CNC TFS-30400002-CNC , eachTFS-30410003 TFS-30400003, eachTFS-30410003-CNC TFS-30400003-CNC , eachTFS-30410005 TFS-30400005, eachTFS-30410005-CNC TFS-30400005-CNC , eachTFS-30410006 TFS-30400006, eachTFS-30410006-CNC TFS-30400006-CNC , eachTFS-30410012-CNC TFS-30400012-CNC , eachTFS-30410013-CNC TFS-30400013, each

Rep lacement Components:

TFS-31400271 SBC 23 Degree Intake Valve Seats, eachTFS-31400272 SBC 23 Degree Exhaust Valve Seats, eachTFS-51400252 SBC 23 Degree Valve Guides, bronze, intake

only, set of 16TFS-51410252 SBC 23 Degree Valve Guides, bronze, intake

only, eachTFS-304B0252 SBC 23 Degree Valve Guides, bronze, exhaust

only, eachTFS-31400423 SBC 23 Degree 1.250 in. Retainers, 7 degree,

set of 16TFS-31400423-1 SBC 23 Degree 1.250 in. Retainers, 7 degree,

eachTFS-51400423 SBC 23 Degree 1.470 in. Retainers, 7 degree,

set of 16TFS-31400423-1 SBC 23 Degree 1.470 in. Retainers, 7 degree,

eachTFS-31400443 SBC 23 Degree Valve Locks, stamped, 7

degree , set of 32TFS-31400413 SBC 23 Degree 1.250 in. Single Valve Springs,

set of 16TFS-31400413-1 SBC 23 Degree 1.250 in. Single Valve Springs,

eachTFS-51400413 SBC 23 Degree 1.470 in. Single Valve Springs,

set of 16TFS-51400413-1 SBC 23 Degree 1.470 in. Single Valve Springs,

eachTFS-31400414 SBC 23 Degree 1.460 in. Dual Valve Springs,

set of 16TFS-31400414-1 SBC 23 Degree 1.460 in. Dual Valve Springs,

eachTFS-30400523-8 SBC 23 Degree Guideplates, set of 8TFS-30400523-1 SBC 23 Degree Guideplates, eachTFS-31400417 SBC 23 Degree 7/16 in. Head Bolt Washers, set

of 17TFS-51400613 SBC 23 Degree 3/8 in. Rocker Studs, set of 16TFS-51410613 SBC 23 Degree 3/8 in. Rocker Studs, set of 8TFS-51400613-1 SBC 23 Degree 3/8 in. Rocker Studs, eachTFS-51400454 SBC 23 Degree Valve Seals, set of 16TFS-51400212 SBC 23 Degree 1.60 in. Exhaust Valves, eachTFS-51400211 SBC 23 Degree 2.02 in. Intake Valves, eachTFS-31500432 SBC 23 Degree .060 in. spring shim, set of 16TFS-31500432-1 SBC 23 Degree .060 in. spring shim, eachTFS-31400433 SBC 23 Degree 1.250 in. Valve Spring Cups,

set of 16TFS-31400433-1 SBC 23 Degree 1.250 in. Valve Springs, each



Installation Notes

Recommended Too ls

* Shop manual for your vehicle* Basic mechanics tool set with SAE and metric size sockets and combination wrenches* 0-100 ft.-lbs. torque wrench* Timing light, vacuum gauge, and spark plug gapper* 7/16-14 tap and tap handle* Straightedge* Feeler gauge* Modeling clay* Comp Cams adjustable pushrod (C CA-7702-1 for hydraulic roller applications, C CA-7703-1 for flat tappet applications)* Solid mock-up lifter

Additional Parts Required

You will need the following components to complete the installation of your Trick Flow heads. See Recommended Components in the technical specifications section for specific part numbers.

Trick F low also has complete Head Gasket kits featuring top quality gaskets made for us by Fel-Pro. The kits will save you time and money.

Head gasketsIntake gasketsExhaust gasketsHead boltsIntake boltsExhaust boltsMoly lubeSpark plugsRTV sealerPushrodsRocker armsThread sealerTemperature sending unit adapter (if needed )1/2" pipe plug for blocking unused temperature sender holeThread locker (stud applications)

Installation Instructions

Pushrod and Rocker Arm Recommendations1.

High quality, hardened pushrods must be used in all applications. We strongly recommend that you verify the valve tip wear pattern, using the procedure outlined in the Tech Bulletin. The pushrod length you obtain should be very close to the following:

Pushrod Length us ing Ro ller Rocker Arms(Crane Gold Race [CRN-11750-16/11759-16], Trick Flow [TFS-31400510/31400511], or Summit "Black" [SUM-G6910/G6920])

Cam Type Pushrod LengthStandard hydraulic cam 7 .850 in .Standard mechanical cam 7 .950 in .GM or Crane hydraulic roller 7 .250 in .

For other combinations,.

see the Rocker and Pushrod Data Sheet

400 c.i.d. Drill Note2.

The Trick F low 23 Degree Heads do not come pre-drilled with the steam holes required for use on a 400 c.i.d. small block Chevy.

If needed, the steam holes can be drilled by a competent machine shop, but be advised that this will void the warranty since it is a modification of the head. If you choose to drill the steam holes, follow the instructions below:

. Place a 400 c.i.d. head gasket on the deck surface of the cylinder head and carefully mark the positions of the steam holes.

A

Using a 1/8 in. drill bit, drill the steam holes as shown below. Note that the steam hole that is closest to the intake side of the head is drilled at a 45 degree angle toward the exhaust side of the head.

B.

Cylinder Head Removal3.

Consult your shop manual for the proper removal procedure for your particular vehicle . It's a good idea to jot down notes or drawings. Taking pictures or even making a video of the disassembly will help you greatly when reinstalling complicated bracketry and vacuum line routing. Be sure the #1 cylinder is at TDC on the compression stroke and mark the distributor's rotor position on the firewall before disassembly.

Prepping the B lock4.

With the old heads removed, now is a good time to inspect your cylinder bores for scratches, ridges, and cracks. If everything looks OK, put some paper towels in the cylinders to catch loose debris as you scrape the old head gaskets off the block's deck surface . Remove all traces of gasket and any oil or grease that may be present. Wipe the surface with brake cleaner.

Check the deck surfaces for flatness by laying a straightedge across the deck lengthwise , then try to stick a .004 in. feeler gauge under the straightedge anywhere on the deck surface . If you can get the feeler gauge under, it's time to have your block decked.

Once the block decks have been cleaned and checked, use the 7/16-14 tap to chase the threads in the head bolt holes. This will clean out old sealer and debris. There are 17 holes per side , so don't forget any. This is very important for sealing the new head bolts and torquing the heads down evenly on the block! You may want to put an "X" on the bolt pattern diagram ( ) by the holes that you've already done so you don't lose track.

Figure 1

After cleaning the head bolt hole threads, carefully take the paper towels out of the cylinders and discard. Wipe the cylinders out with paper towels until they are very clean, then coat the cylinder walls with a thin film of engine oil.

Checking Header C learance5.

Place one of your new heads on a suitable work top and install a couple of the recommended spark plugs. Bolt the headers to the head and check for any plug interference . It is much easier to find out now instead of waiting until the engine is in the chassis. Be sure to check both headers.

Although some headers will work with straight plug boots, we recommend using 90 degree boots with header-equipped small block Chevys. A good hex end plug socket is a must.

Now is also a good time to make sure your vehicle's temperature sending unit is the correct size . We use a 1/2 in.-14 NPT hole. If your sender doesn't fit, see Recommended Components to get the right adapter bushing.

Checking Piston to Valve C learance and Valvetrain 6.

Geometry

If you choose to use the stock cam in your engine , and it has not been moved from its factory position, you do not have to check piston-to-valve clearance. It is still a good idea to familiarize yourself with the procedure since you may want to go to a larger cam in the future. See the maximum valve lifts in Specifications before purchasing a larger cam.

If you have an aftermarket cam or are reinstalling ANY cam (especially with a multi-keyway timing set), you must follow this procedure to assure safe operating clearances between your pistons and valves:

Rotate the crank until you're on the compression stroke of the #1 cylinder. Place a solid mock-up lifter in the lifter bore of the valve that you'll be checking. (Make sure the lifter is the same height as your original--you'll need it for checking valvetrain geometry later.)

A.

Coat the top of the piston with a very thin layer of oil, then place a few 1/4 in. thick strips of modeling clay across the upper half of the piston. Place the head gasket you will be using on the block and bolt the head on with five or six head bolts, torqued to 30 ft.-lbs.

B.

Install the rocker studs, guideplate , and valvetrain for the position you are checking (intake or exhaust), and set the adjustable pushrod to the proper length for your combination. Tighten the rocker to zero lash, rotate the crank at least twice , then remove the head and gently remove the clay.

C.

Carefully cut the clay in slices and look for the thinnest section of the valve impression. This impression is a 3D representation of the closest approach of the piston to the valve .

Carefully measure the clay with a machinist's scale or calipers. The intake side should have .080 in. or more of clearance , and the exhaust should have .100 in. or more of clearance . Repeat the procedure for the other valve .

D.

When you are done with the second valve , reinstall the head in the same manner as before so you can verify proper pushrod length and valvetrain geometry by following the procedure described in the Valvetrain Geometry Tech Info.

E.

Once the checking procedures are done , rotate the crank until the #1 piston is at TDC on the exhaust stroke, and leave it there .

Installing the Trick F low Heads7.

With the block clean and all checks completed, position the head gaskets per the manufacturer's markings. Some head gaskets will have "UP" imprinted on one side, while others may have "FRONT." When the gasket is positioned correctly, don't be alarmed if some of the holes in the block are restricted by a smaller hole in the gasket. This is done intentionally to regulate coolant flow.

With gaskets in place , push the heads down onto the dowel pins evenly so that the head is flat against the gasket.

Next, place all head bolt washers on the head to protect the aluminum surface. Put a small amount of ARP moly lube on the tops of all washers once they are in place .

There are three different lengths of head bolts/studs. Coat all threads with a premium thread sealer (Permatex 3H Aviation Form-a-Gasket for bolts, Loctite Blue for studs), let them set up for a while , then place the bolts in their proper locations. Torque the bolts in the three stages below, following the sequence in :Figure 1

Step One: 32 ft.-lbs.Step Two: 52 ft.-lbs.Step Three: 70 ft.-lbs.

Go over once again at 70 ft.-lbs. to be safe . Retorquing shouldn't be necessary after initial break-in, but can be done if desired.

Installing and Adjusting the Valvetrain8.

Place the proper length, hardened pushrods into the pushrod holes. Be sure to coat the base threads of the rocker studs with the Permatex 3H to seal the threads, then put the guideplates on.

When everything is lined up correctly, torque the studs to 55 ft.-lbs.

Place your rockers on the studs, and make sure they are centered side to side ( ).see F igure 2

Adjust the valvetrain according to your cam maker's specifications.

If you are using a hydraulic cam and no specs are available , turn the rocker arm adjusting nut 1/2 to 3/4 turn after zero lash. For mechanical cams, you must get the correct lash specification from the cam maker.

In either case you can use the following adjustment order. This is the easiest method since it requires only one turn of the crank. See for cylinder layout:Figure 3

With #1 piston at TDC on the exhaust stroke, adjust the exhaust rockers of cylinders 2, 5, 6, and 7, then the intake rockers of cylinders 3, 4, 6, and 8.

A.

Turn the crank 360 degrees (1 full turn) to put the #1 piston at TDCon the compression stroke . Adjust the exhaust rockers of cylinders1, 3, 4, and 8, then the intake rockers of cylinders 1, 2, 5, and 7.Leave the #1 piston at TDC on the compression stroke for the rest of the reassembly.

B.

If you have a reverse rotation marine motor, this method does not apply. Consult a marine shop manual for the procedure .

Marine Engine Note:

Reassemb ling the Rest of the Eng ine9.

Install as many items as you can without putting the valve covers on. This will allow you to prelube the valvetrain, which is explained in the Prelubing the Valvetrain section.

Intake Man ifo ld Tips

Apply a 1/4 in. bead of Permatex Ultra Black (part number 598BR) to the manifold end rail surfaces. Do not use a gasket on the end rails, only the sealer. Outline the water openings at the ends of the head with the Ultra Black to help prevent water leaks. Apply a small amount of motor oil (do not use antiseize!) to the intake bolts and torque to factory specs in the sequence shown in .Figure 4

Exhaust Manifold/Header Tips

Lay your straightedge across the mating flange of your headers or exhaust manifold to make sure they are flat. If they are not, you should have them milled flat. Put a small amount of motor oil (do not use antiseize!) on the exhaust bolts and tighten them down from the center out to the ends. You're

trying to pull the flange down evenly. After the engine has been run a few times, retighten the exhaust bolts. If they loosen up, the leaking exhaust gas will burn out the gasket.

Exhaust Leak Note: What sounds like a lifter tick is often an exhaust gas leak. They both vary directly with rpm and sound alike. Rule out exhaust leaks before tearing the intake off to replace the lifters.

Prelub ing the Valvetrain10.

You are now ready to prelube the valvetrain. Lubricate the rocker arms, springs, and valve stems with about 1/2 quart of oil per head. It is a good idea to use an oil squirt can to get inside the valve spring and lube the valve stem and seal area.

YOU MUST NOT START THE ENGINE WITH THE TOP HALF DRY!

Valve Cover Installation11.

The valve cover rails on the Trick F low heads have been raised approximately .300 in. to provide clearance for roller rocker arm poly locks. This will make the valve covers sit higher--take this into account when reassembling accessories that mount on or cross over the valve covers.

If you choose to run the standard, wide body type rockers with centerbolt type covers, you will have to reduce the width of the baffle by squeezing it in the center until it clears. Remember that you will have to use guideplates if you do not use the self-aligning rockers.

Break-In and Tuning12.

After installing the valve covers, assemble the rest of the engine and align the distributor rotor to the mark you made on the firewall during disassembly so that the engine starts as quickly as possible. If the cylinders are getting the right amount of fuel with a correctly timed spark, the engine will start quickly.

To ensure long life and trouble-free usage , allow 2-4 hours of normal driving time before running the engine hard. This allows proper break-in of the valvetrain. If you are also breaking in a new cam, it's a good idea to change the oil after a half hour. This will help to remove small particles that are shorn off in the break-in process. After proper break-in is complete , you can use a synthetic oil if you wish.

Recommended total timing is from 36 to 38 degrees for maximum power. The best setting will depend on your particular engine combination and ambient conditions.


Figure 1

Figure 2

Figure 3

Figure 4

Rocker and Pushrod Data

Use the following table to find a starting point in your valvetrain geometry mockup.

These lengths should be nearly ideal for the application listed.

Hydraulic Roller CamsCam Lifter Rocker Pushrod

Stock GM Stock GM Crane "Gold" 1.5 7.150"Stock GM Stock GM Summit "Black" 1.5 7.150"Stock GM Stock GM Trick F low 1.5 7.150"Stock GM Stock GM Comp Cams "Red" 1.5 7.050"Stock GM Stock GM Crane Silver 1.5 7.050"Most Crane CRN-11532-16 Crane "Gold" 1.5 7.250"Most Crane CRN-11532-16 Summit "Black" 1.5 7.250"Most Crane CRN-11532-16 Trick F low 1.5 7.250"Most Crane CRN-11532-16 Comp Cams "Red" 1.5 7.100"Most Crane CRN-11532-16 Crane "Silver" 1.5 7.200"Most Crower CRO-66200 Crane "Gold" 1.5 7.350"Most Crower CRO-66200 Summit "Black" 1.5 7.350"Most Crower CRO-66200 Trick F low 1.5 7.350"Most Crower CRO-66200 Comp Cams "Red" 1.5 7.200"Most Comp Cams C CA-853-16 Crane "Gold" 1.5 7.350"Most Comp Cams C CA-853-16 Summit "Black" 1.5 7.350"Most Comp Cams C CA-853-16 Trick F low 1.5 7.350"Most Comp Cams C CA-853-16 Comp Cams "Red" 1.5 7.200"Most Comp Cams C CA-853-16 Crane "Silver" 1.5 7.250"

F lat Tappet Hydraulic CamsMost TRW-VL37 Crane "Gold" 1.5 7.850"Most TRW-VL37 Summit "Black" 1.5 7.850"Most TRW-VL37 Trick F low 1.5 7.850"Most TRW-VL37 Comp Cams "Red" 1.5 7.750"

F lat Tappet Solid CamsMost TRW-VL43 Crane "Gold" 1.5 7.950"Most TRW-VL43 Summit "Black" 1.5 7.950"Most TRW-VL43 Trick F low 1.5 7.950"Most TRW-VL43 Comp Cams "Red" 1.5 7.800"

Mockup: Block Deck Height: 9.010"Head Gasket: .039"Unmilled Heads

Special small base circle cams will use slightly longer pushrods than shown. Always verify valvetrain geometry for your individual combination by checking tip travel.

NOTE:


23 Degree A irflow Chart

Lift Value (in.) As Cast CNC Chamber OptionIntake F low Exhaust F low Intake F low Exhaust F low

CFM CFM CFM CFM0.100 50.6 57.9 64.2 55.90.200 135.8 98.3 138.5 105.20.300 191.0 136.4 197.7 145.50.400 229.7 162.9 237.1 170.70.500 253.1 176.9 256.8 186.30.600 254.3 189.6 258.4 195.9

Tests conducted with 64cc chambers at 28 in. of water (pressure)

NOTE:



Warranty

Trick F low Specialties warrants its assembled street high performance cylinder heads to be free from defects in both materials and workmanship for a period of one year from date of purchase . All other products, including race cylinder heads, are warranted for a period of 90 days from date of purchase . This warranty covers manufacturing defects only. Damage due to negligence or improper installation will not be covered. Alterations made to the product such as porting, milling, welding, or other custom modifications are done at the owner’s sole risk and will void the warranty. Trick F low’s sole obligation shall be to repair or replace any product that is defective under this warranty. This warranty covers only the product itself and not the cost of installation or removal.

Customers who believe they have a defective product should either return it to the dealer from whom it was purchased or call Trick F low at 1-330-630-1555 with a complete description of the problem. After obtaining a return authorization number, the product must be returned freight prepaid. If a thorough inspection by the factory indicates defects in workmanship or materials, our sole obligation shall be to repair or replace the product.


trick flow head stats

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