5.0L Cylinder Heads

.

EDELBROCK
PERFORMER

FORD
MOTORSPORT
SVO GT-40

FORD
MOTORSPORT
SVO GT-40
"TURBO SWIRL"

TFS
TWISTED
WEDGE

WORLD
PRODUCTS
WINDSOR JR

WORLD
PRODUCTS
WINDSOR

Material

356-T6 Aluminum

Cast Iron

356-T6 Aluminum

A356-T61 Aluminum

Avail. Cast Iron or 355 T-6

Avail. Cast Iron or 355 T-6

50-State legal

Performer models only

Yes

Yes

Yes

Yes¹

Yes¹

Accept stock intake/headers

Yes, all models

Yes

Yes

Yes

Yes²

Yes²

Accept stock valve covers

Yes, all models

Yes³

Yes³

Yes
(Rails raised 0.350")

Yes

Yes

Compatible w/ 7/16 & 1/2" head bolts

Yes⁴

Yes⁵

Yes⁵

Yes⁶

Yes⁷

Yes⁷

Stock Pushrods

Yes⁸

Yes⁹

Yes⁹

No¹⁰

Yes¹¹

Yes¹¹

Special Requirements

None¹²

None

None

None¹³

None

None

Combustion Chamber Volume

60cc

65.5cc

64cc

61cc

58cc

64cc¹⁴

Intake Runner Volume

170cc

160cc

160cc

170cc

171cc

197cc

Intake Runner Flow (Unported)

212 cfm @ 28"
(0.500" lift)

182.1 cfm @ 28"

217.4 cfm @ 28"

250 cfm @ 28"
(0.500" lift)

202 cfm

222 cfm @ 28"
(0.500" lift)

Valve Size

2.02/1.60¹⁵

1.84/1.54

1.94/1.54

2.02/1.60

1.94/1.60

2.02/1.60

Max Valve Size Possible

2.05/1.625

2.02/1.60

2.02/1.60

2.055/1.60

1.94/1.60

2.08/1.60

Max Valve Spring Size Possible

1.550¹⁶

Not Avail.

Not Avail.

1.550¹⁷

1.625¹⁸

1.625¹⁸

Deck Thickness

0.625

Not Avail.

Not Avail.

0.560

0.400 min

0.400 min

Largest Cam Recommended

0.575 lift¹⁹

0.500 lift, 220-244 duration²⁰

0.500 lift, 220-244 duration²⁰

0.520 lift, 224 duration @ 0.050

0.530 lift, 290 duration²¹

0.530 lift, 290 duration²²

Recommended Head Gasket

Fel-Pro²³

Motorsport²⁴

Motorsport²⁴

Fel-Pro

Fel-Pro²⁵

Fel-Pro²⁵

Recommended Head Torque (ft/lbs)

7/16" - 70 short bolts, 80 long bolts
1/2" - 100 short bolts, 110 long bolts

65-72

65-72

7/16" - 70

80 long bolts, 70 short bolts

1/2" - 105, 7/16" - 80 long bolts, 70 short bolts

Recommended Spark Plug

Champion
RC12YC

Motorcraft
AGSF-32C

Motorcraft
AGSF-32C

Autolite 3924 or equivalent

ACCEL 276S or equivalent

ACCEL 276S or equivalent

Claimed HP Gain (Stock Short Block)

40-50

25

40

45-50

35 w/GT-40 intake

65 w/GT-40 intake

Suggested Retail, Bare

$942/pair

$299 each

$395 each

$871/pair

Cast Iron: $720/pair, Aluminum: $1198/pair

Cast Iron: $720/pair, Aluminum: $1198/pair

Suggested Retail, Assembled

$1176/pair²⁶

$449 each²⁷

$589 each²⁸

$1145/pair²⁹

Cast Iron: $1020/pair, Aluminum; $1498/pair³⁰

Cast Iron: $1020/pair, Aluminum; $1498/pair³¹

Top

Notes

Note 1:

Cast iron, yes E.O. number on aluminum version pending

Note 2:

Some minor header flange clearancing may be necessary for spark plug installation due to slightly deeper spark plug location (for optimized spark)

Note 3:

Some oil baffle trimming may be required.

Note 4:

All Edelbrock heads are drilled for 1/2" bolts, but bushings/washers are offered (Kit #9680) for use with 7/16" bolts.

Note 5:

Drilled for 1/2" bolts. Use Motorsport head bolt kit (M-6065-B289) when installing on blocks with 7/16" bolts.

Note 6:

Twisted Wedge heads (P/N TFS-51400001 and TFS-51400002) are drilled for 7/16" head bolts, but contain a "step" enabling the heads to be easily drilled for 1/2" bolts. The TFS-51400003 heads are drilled for 1/2" bolts.

Note 7:

Drilled for 1/2" bolts only. Use Motorsport head bolt kit (M-6065-B289), when installing on 289/302 applications.

Note 8:

When using stud mounted rockers, with guide plates, a hardened pushrod must be used.

Note 9:

Motorsport recommends its stock length hardened pushrods. (M6565-A302).

Note 10:

Hardened pushrods 0.500" longer than stock are required.

Note 11:

World has noted that the length of stock pushrods may vary. It suggests measuring your pushrods, then ordering hardened pushrods to replace them.

Note 12:

Edelbrock heads are designed to bolt on straight out of the box, and fit all 289-351 Windsor engines. Flycutting pistons is required with 2.02" valves at cam lift greater than 0.500".

Note 13:

Aftermarket roller rockers are highly recommended.

Note 14:

Stock combustion chamber is 58cc. To maintain stock compression, these heads must be milled to 58cc, then piston to valve clearance checked, especially with after market cams. If your engine is super charged, World recommends leaving the heads at 64cc.

Note 15:

Available with either 2.02" or 1.90" intake valve sizes, and 1.60" exhaust valves.

Note 16:

1.45" standard.

Note 17:

1.47" standard.

Note 18:

Can be machined for up to 1.625" spring, but will accept 1.250", 1.437", and 1.550" springs out of the box, (assembled with 1.250" springs).

Note 19:

Edelbrock heads come equipped to handle camshafts up to 0.575" lift. However, Edelbrock engineers recommend that you check piston to valve clearance with any cam with more than a 0.500" lift when a 2.02" valve is used.

Note 20:

Approximately 0.500" lift, 220-224 degrees duration such as M6250-E303/B303, M6250-X303, (0.544" lift, 224 degrees duration at 0.050"), may also be used but pistons will have to be notched. Valve timing can affect piston to valve clearance so this tolerance should be checked with any cam approaching 0.500" lift.

Note 21:

Maximum with stock pistons. However, World maintains that this head will flow well beyond this lift and duration.

Note 22:

Maximum with stock pistons (if Windsor is milled for 58cc chamber volume, piston to valve clearance must be checked). However, World maintains that the Windsor flows well up to and beyond 0.700" lift.

Note 23:

Fel-Pro P/N 9333 PT-1 head gaskets for stock 5.0 engines, Fel-Pro P/N 1011-2 gaskets for engines with up to 12:1 compression, and Fel-Pro P/N1006 Loc-Wire gaskets for engines with more than 12:1 compression, or supercharger/turbocharger/big nitrous systems.

Note 24:

Motorsport P/N M6051-B51 expanded graphite.

Note 25:

Fel-Pro 9333PT-1 or 1011-2 (do not use 1011-1).

Note 26:

Assembled Edelbrock heads come with one-piece, stainless steel, under-cut, 11/32" valves with a Serdi-machined 3-angle valve job. Also included, are valve springs, (capable of 0.575" lift), phosphor-bronze valve guides, two-ring oil control seals, steel retainers, machined steel locks, rocker studs, and guideplates, (where applicable). And, Heli-Coils in the rocker, exhaust and manifold bolt holes. Screw-in studs and guideplates are supplied with applicable heads.

Note 27:

Assembled GT-40 heads come with stainless steel valves, single springs, (with damper), hardened locks, machined steel retainers, and positive rubber valve seals.

Note 28:

Assembled aluminum GT-40 "Turbo Swirl" heads come with stainless steel valves, single springs, (with damper), hardened locks, machined steel retainers, and positive rubber valve seals.

Note 29:

Assembled TFS Twisted Wedge heads come with stainless steel one-piece 11/32" valves, manganese phosphor valve guides, 1.470" single valves springs with damper (good for 0.540" lift), stamped 7 degree keepers, chrome molly retainers, and positive teflon seals. TFS heads using stud mounted rockers come with guide plates and screw-in studs.

Note 30:

Assembled World products Windsor Jr. heads come with one-piece stainless steel swirl-polished valves with hard chrome stems and stellite tips; 1,250" valve springs, 7 degree chrome-moly retainers and locks; 7/16" bottom, 3/8" top chrome moly studs and 5/16" guideplates.

Note 31:

Assembled World products Windsor heads come with one-piece stainless steel swirl-polished valves with hard chrome stems and stellite tips,1.250" valve springs, 7 degree chrome-moly retainers and locks, 7/16" bottom, 3/8" top chrome moly studs and 5/16" guideplates.

Top

Edelbrock Corp.
2700 California St.
Torrance, CA 90503

Edelbrock offers four different versions of it's 50 state legal Performer heads and two different versions of it's off-road Performer RPM heads. Performer heads are offered in pedestal mount or 3/8" stud mount rocker configurations with either 1.90" or 2.02" intake valves. Both have 1.60" exhaust valves. Performer RPM heads do not have heat crossover or provisions for AIR injection plumbing. Combustion chamber and intake runner volume are common to both Performer and Performer RPM heads.

Ford Motorsport SVO
44050 Groesbeck Hwy.
Clinton Township, MI 48036

Ford Motorsport SVO offers it's popular GT-40 cylinder heads in both cast iron and aluminum versions, both are 50 state emissions legal. These heads are sold individually and are available bare or fully assembled.

Trick Flow Specialties
1248 Southeast Ave.
Tallmadge, OH 44278

Trick Flow Specialties (TFS) Twisted Wedge cylinder heads are unique from other cylinder heads in that they feature rotated intake and exhaust valves moved over the center of the cylinder bores for better air flow. As a result of optimizing the valve locations, valve angles, and combustion chamber shape, the Twisted Wedge heads use stock height exhaust ports without power loss.TFS offers the Twisted Wedge heads in three configurations: pedestal mount, stud mount and stud mount machined for Fel-Pro Loc-Wire head gaskets.

World Products
29 Trade Zone Dr.
Ronkonkoma, NY 11779

World Products offers two basic designs for the 5.0: the Windsor and the Windsor Jr., both of which are available in cast iron or aluminum. The Windsor Jr. is designed specifically for the 5.0 applications. The Windsor was originally designed for earlier 351W engines. However, World Products maintains that the Windsor with extra large intake runners and bigger valves (and same price) is still the more popular head with the 5.0 crowd.

Top

.	EDELBROCK PERFORMER	FORD MOTORSPORT SVO GT-40	FORD MOTORSPORT SVO GT-40 "TURBO SWIRL"	TFS TWISTED WEDGE	WORLD PRODUCTS WINDSOR JR	WORLD PRODUCTS WINDSOR
Material	356-T6 Aluminum	Cast Iron	356-T6 Aluminum	A356-T61 Aluminum	Avail. Cast Iron or 355 T-6	Avail. Cast Iron or 355 T-6
50-State legal	Performer models only	Yes	Yes	Yes	Yes¹	Yes¹
Accept stock intake/headers	Yes, all models	Yes	Yes	Yes	Yes²	Yes²
Accept stock valve covers	Yes, all models	Yes³	Yes³	Yes (Rails raised 0.350")	Yes	Yes
Compatible w/ 7/16 & 1/2" head bolts	Yes⁴	Yes⁵	Yes⁵	Yes⁶	Yes⁷	Yes⁷
Stock Pushrods	Yes⁸	Yes⁹	Yes⁹	No¹⁰	Yes¹¹	Yes¹¹
Special Requirements	None¹²	None	None	None¹³	None	None
Combustion Chamber Volume	60cc	65.5cc	64cc	61cc	58cc	64cc¹⁴
Intake Runner Volume	170cc	160cc	160cc	170cc	171cc	197cc
Intake Runner Flow (Unported)	212 cfm @ 28" (0.500" lift)	182.1 cfm @ 28"	217.4 cfm @ 28"	250 cfm @ 28" (0.500" lift)	202 cfm	222 cfm @ 28" (0.500" lift)
Valve Size	2.02/1.60¹⁵	1.84/1.54	1.94/1.54	2.02/1.60	1.94/1.60	2.02/1.60
Max Valve Size Possible	2.05/1.625	2.02/1.60	2.02/1.60	2.055/1.60	1.94/1.60	2.08/1.60
Max Valve Spring Size Possible	1.550¹⁶	Not Avail.	Not Avail.	1.550¹⁷	1.625¹⁸	1.625¹⁸
Deck Thickness	0.625	Not Avail.	Not Avail.	0.560	0.400 min	0.400 min
Largest Cam Recommended	0.575 lift¹⁹	0.500 lift, 220-244 duration²⁰	0.500 lift, 220-244 duration²⁰	0.520 lift, 224 duration @ 0.050	0.530 lift, 290 duration²¹	0.530 lift, 290 duration²²
Recommended Head Gasket	Fel-Pro²³	Motorsport²⁴	Motorsport²⁴	Fel-Pro	Fel-Pro²⁵	Fel-Pro²⁵
Recommended Head Torque (ft/lbs)	7/16" - 70 short bolts, 80 long bolts 1/2" - 100 short bolts, 110 long bolts	65-72	65-72	7/16" - 70	80 long bolts, 70 short bolts	1/2" - 105, 7/16" - 80 long bolts, 70 short bolts
Recommended Spark Plug	Champion RC12YC	Motorcraft AGSF-32C	Motorcraft AGSF-32C	Autolite 3924 or equivalent	ACCEL 276S or equivalent	ACCEL 276S or equivalent
Claimed HP Gain (Stock Short Block)	40-50	25	40	45-50	35 w/GT-40 intake	65 w/GT-40 intake
Suggested Retail, Bare	$942/pair	$299 each	$395 each	$871/pair	Cast Iron: $720/pair, Aluminum: $1198/pair	Cast Iron: $720/pair, Aluminum: $1198/pair
Suggested Retail, Assembled	$1176/pair²⁶	$449 each²⁷	$589 each²⁸	$1145/pair²⁹	Cast Iron: $1020/pair, Aluminum; $1498/pair³⁰	Cast Iron: $1020/pair, Aluminum; $1498/pair³¹

Note 1:	Cast iron, yes E.O. number on aluminum version pending
Note 2:	Some minor header flange clearancing may be necessary for spark plug installation due to slightly deeper spark plug location (for optimized spark)
Note 3:	Some oil baffle trimming may be required.
Note 4:	All Edelbrock heads are drilled for 1/2" bolts, but bushings/washers are offered (Kit #9680) for use with 7/16" bolts.
Note 5:	Drilled for 1/2" bolts. Use Motorsport head bolt kit (M-6065-B289) when installing on blocks with 7/16" bolts.
Note 6:	Twisted Wedge heads (P/N TFS-51400001 and TFS-51400002) are drilled for 7/16" head bolts, but contain a "step" enabling the heads to be easily drilled for 1/2" bolts. The TFS-51400003 heads are drilled for 1/2" bolts.
Note 7:	Drilled for 1/2" bolts only. Use Motorsport head bolt kit (M-6065-B289), when installing on 289/302 applications.
Note 8:	When using stud mounted rockers, with guide plates, a hardened pushrod must be used.
Note 9:	Motorsport recommends its stock length hardened pushrods. (M6565-A302).
Note 10:	Hardened pushrods 0.500" longer than stock are required.
Note 11:	World has noted that the length of stock pushrods may vary. It suggests measuring your pushrods, then ordering hardened pushrods to replace them.
Note 12:	Edelbrock heads are designed to bolt on straight out of the box, and fit all 289-351 Windsor engines. Flycutting pistons is required with 2.02" valves at cam lift greater than 0.500".
Note 13:	Aftermarket roller rockers are highly recommended.
Note 14:	Stock combustion chamber is 58cc. To maintain stock compression, these heads must be milled to 58cc, then piston to valve clearance checked, especially with after market cams. If your engine is super charged, World recommends leaving the heads at 64cc.
Note 15:	Available with either 2.02" or 1.90" intake valve sizes, and 1.60" exhaust valves.
Note 16:	1.45" standard.
Note 17:	1.47" standard.
Note 18:	Can be machined for up to 1.625" spring, but will accept 1.250", 1.437", and 1.550" springs out of the box, (assembled with 1.250" springs).
Note 19:	Edelbrock heads come equipped to handle camshafts up to 0.575" lift. However, Edelbrock engineers recommend that you check piston to valve clearance with any cam with more than a 0.500" lift when a 2.02" valve is used.
Note 20:	Approximately 0.500" lift, 220-224 degrees duration such as M6250-E303/B303, M6250-X303, (0.544" lift, 224 degrees duration at 0.050"), may also be used but pistons will have to be notched. Valve timing can affect piston to valve clearance so this tolerance should be checked with any cam approaching 0.500" lift.
Note 21:	Maximum with stock pistons. However, World maintains that this head will flow well beyond this lift and duration.
Note 22:	Maximum with stock pistons (if Windsor is milled for 58cc chamber volume, piston to valve clearance must be checked). However, World maintains that the Windsor flows well up to and beyond 0.700" lift.
Note 23:	Fel-Pro P/N 9333 PT-1 head gaskets for stock 5.0 engines, Fel-Pro P/N 1011-2 gaskets for engines with up to 12:1 compression, and Fel-Pro P/N1006 Loc-Wire gaskets for engines with more than 12:1 compression, or supercharger/turbocharger/big nitrous systems.
Note 24:	Motorsport P/N M6051-B51 expanded graphite.
Note 25:	Fel-Pro 9333PT-1 or 1011-2 (do not use 1011-1).
Note 26:	Assembled Edelbrock heads come with one-piece, stainless steel, under-cut, 11/32" valves with a Serdi-machined 3-angle valve job. Also included, are valve springs, (capable of 0.575" lift), phosphor-bronze valve guides, two-ring oil control seals, steel retainers, machined steel locks, rocker studs, and guideplates, (where applicable). And, Heli-Coils in the rocker, exhaust and manifold bolt holes. Screw-in studs and guideplates are supplied with applicable heads.
Note 27:	Assembled GT-40 heads come with stainless steel valves, single springs, (with damper), hardened locks, machined steel retainers, and positive rubber valve seals.
Note 28:	Assembled aluminum GT-40 "Turbo Swirl" heads come with stainless steel valves, single springs, (with damper), hardened locks, machined steel retainers, and positive rubber valve seals.
Note 29:	Assembled TFS Twisted Wedge heads come with stainless steel one-piece 11/32" valves, manganese phosphor valve guides, 1.470" single valves springs with damper (good for 0.540" lift), stamped 7 degree keepers, chrome molly retainers, and positive teflon seals. TFS heads using stud mounted rockers come with guide plates and screw-in studs.
Note 30:	Assembled World products Windsor Jr. heads come with one-piece stainless steel swirl-polished valves with hard chrome stems and stellite tips; 1,250" valve springs, 7 degree chrome-moly retainers and locks; 7/16" bottom, 3/8" top chrome moly studs and 5/16" guideplates.
Note 31:	Assembled World products Windsor heads come with one-piece stainless steel swirl-polished valves with hard chrome stems and stellite tips,1.250" valve springs, 7 degree chrome-moly retainers and locks, 7/16" bottom, 3/8" top chrome moly studs and 5/16" guideplates.

Edelbrock Corp. 2700 California St. Torrance, CA 90503	Edelbrock offers four different versions of it's 50 state legal Performer heads and two different versions of it's off-road Performer RPM heads. Performer heads are offered in pedestal mount or 3/8" stud mount rocker configurations with either 1.90" or 2.02" intake valves. Both have 1.60" exhaust valves. Performer RPM heads do not have heat crossover or provisions for AIR injection plumbing. Combustion chamber and intake runner volume are common to both Performer and Performer RPM heads.
Ford Motorsport SVO 44050 Groesbeck Hwy. Clinton Township, MI 48036	Ford Motorsport SVO offers it's popular GT-40 cylinder heads in both cast iron and aluminum versions, both are 50 state emissions legal. These heads are sold individually and are available bare or fully assembled.
Trick Flow Specialties 1248 Southeast Ave. Tallmadge, OH 44278	Trick Flow Specialties (TFS) Twisted Wedge cylinder heads are unique from other cylinder heads in that they feature rotated intake and exhaust valves moved over the center of the cylinder bores for better air flow. As a result of optimizing the valve locations, valve angles, and combustion chamber shape, the Twisted Wedge heads use stock height exhaust ports without power loss.TFS offers the Twisted Wedge heads in three configurations: pedestal mount, stud mount and stud mount machined for Fel-Pro Loc-Wire head gaskets.
World Products 29 Trade Zone Dr. Ronkonkoma, NY 11779	World Products offers two basic designs for the 5.0: the Windsor and the Windsor Jr., both of which are available in cast iron or aluminum. The Windsor Jr. is designed specifically for the 5.0 applications. The Windsor was originally designed for earlier 351W engines. However, World Products maintains that the Windsor with extra large intake runners and bigger valves (and same price) is still the more popular head with the 5.0 crowd.