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1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8 by SVE Special Vehicle Equipment ®

1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
Bronze Valve Guide
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
Intake Port
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
Exhaust Port
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
How much power?! 302ci Small Block Ford Engine Build & Dyno w/ SVE 170cc Cylinder Heads
SVE Aluminum Cylinder Heads for Small Block Ford 302/351 | 170cc & CNC'd 185cc - Overview
How To Install 302/351 Mustang Cylinder Heads & Valvetrain (1979-1995)
How To Check Pushrod Length 302/351 Mustang (79-95)

Use these 170CC SVE aluminum cylinder heads to give your 1979-1995 Mustang 5.0/5.8 Windsor motor more horsepower & torque!

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Item #SVE-6049A-K

Everyday Low Price: $1,049.99

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1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
Bronze Valve Guide
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
Intake Port
1979-95 Mustang SVE 170cc Cylinder Heads - 56cc Chamber 5.0/5.8
Exhaust Port
LMR showroom & will call pickup service will be closed beginning Monday 9/21/26 for renovations until further notice. Need help? Contact Us.

 Benefits

  • Increase Horsepower
  • Increase Torque
  • Arrives Fully Assembled
  • Reduced Weight

 Features

  • Aluminum Construction
  • 170cc Intake Volume
  • Upgraded Valve Springs
  • 56cc Combustion Chamber

 What's in the Box

  • (2) Cylinder Heads

SVE Performance Cylinder Heads - 170cc
Increase horsepower and torque in your 1979-1995 Mustang 5.0 or 5.8 with Special Vehicle Equipment's® performance 170cc aluminum cylinder heads. SVE aluminum cylinder heads are the perfect upgrade for your Fox Body or SN-95. Enlarged ports and valves provide more airflow for increased power, while the aluminum construction reduces weight compared to stock cast iron heads. The 170cc intake ports allow for 263 CFM max airflow at 0.60" lift and a 56cc combustion chamber size. SVE heads come fully assembled with 3/8" rockers studs, upgraded hydraulic roller valve springs, Viton valve seals, guide plates, machined bead valve locks, hardened spring cups, Manley steel retainers, and one-piece valves. Intake valves measure in at 2.02" and exhaust valves measure 1.60" big enough to flow all the air your Windsor engine would need. These stud mount heads are fully assembled and are finished off with a 3-angle valve job meaning that you will be able to bolt the cylinder heads to your short block for an effortless upgrade!

Why Buy SVE 170cc Cylinder Heads?

  • Lightweight Aluminum - Constructed with A356 grade aluminum, SVE cylinder heads reduce engine weight significantly compared to factory cast iron cylinder heads, while providing better heat dissipation for improved performance.
  • Upgraded Valve Springs - When upgrading the camshaft in your Mustang, your valve springs need attention. SVE cylinder heads have valve springs pre-installed that are rated up to .575" lift to handle the extra pressure.
  • Fully Assembled - SVE cylinder heads arrive at your door fully assembled and ready to add your choice of rocker arms, valve covers, and other associated parts. 

Do I Need Anything Else For Installation?
While these cylinder heads can be installed on most Mustangs without the need for additional aftermarket parts, there are a few upgrades you may want to consider while you are upgrading your Heads.

  • Valve Cover & Gasket Kit - Finish off the install of your new SVE Cylinder Heads with a fresh set of SVE short valve covers and rubber bonded valve cover gaskets. Also included in this kit is a new set of valve cover bolts for a complete installation.
  • Rocker Arms - Complete your SVE Cylinder Head install with a set of new Rocker Arms. Aftermarket Rocker Arms reduce friction and allow your entire valvetrain to operate smoother than it came from the factory. This increased smoothness allows for more power output and increased response.
  • Lifters - Install a new set of hydraulic roller lifters with your new SVE Cylinder Heads. This upgraded design allows for a much quieter lifter sound when operating, and will slightly increase power due to the reduced friction compared to the factory lifters.

Cylinder Head Specs:
  • Cylinder Head Style: Assembled
  • Head Material: A356 Aluminum
  • Combustion Chamber Volume (cc): 56cc
  • CNC-Machined Combustion Chamber: No
  • Intake Runner Volume (cc): 170cc
  • Exhaust Runner Volume (cc): 66cc
  • CNC-Machined Intake Runner: No
  • CNC-Machined Exhaust Runner: No
  • Intake Port Location: Standard
  • Exhaust Port Location: Standard
  • Intake Valve Diameter (in): 2.020 in.
  • Exhaust Valve Diameter (in): 1.600 in.
  • Maximum Valve Lift (in): 0.575 in.
  • Camshaft Style: Hydraulic roller
  • Outside Diameter of Outer Spring (in): 1.460 in.
  • Number of Springs Per Valve: Single
  • Valve Spring Pressure: 130lb Seat Pressure/300lb Open Pressure @0.500" Lift
  • Spark Plug Style: Gasket Seat
  • Rocker Arm Studs Included: Yes
  • Rocker Arm Nut Thread Size: 3/8 in.-24
  • Rocker Arms Included: No
  • Rocker Arm Nuts Included: No
  • Guideplates Included: Yes
  • Guideplate Pushrod Size: 5/16 in.
  • Intake Valve Angle: 20 Degree
  • Exhaust Valve Angle: 20 Degree
  • Valve Guide Material: Manganese Bronze
  • Valve Seat Machine Style: 3-Angle
  • Oiling Style: Through pushrod
  • Max RPM: 5800-6000
  • Quantity: Sold as a pair

Installation Note
  • Valve Springs are rated up to .575 Lift, Piston to valve clearance MUST BE MEASURED & CHECKED on any cam greater than .500 lift to verify proper clearances.
  • These heads have a 1/2" mounting hole for the head bolts/studs that allow them to be bolted on to a 5.8L/351W.For use on a 5.0L/302 or other Ford small block that utilizes a 7/16" bolt, head bolt reducer bushings will be needed.
  • Will require the use of hardened push rods.
  • These heads work with the after-market spark plug part number AGSP32CK.
  • Piston to Valve Clearance
    • Piston-to-valve clearance and push rod lengths need to be checked on every application. See our SVE valve clearance and pushrod length checking tool part #SVE-PTVTOOL and check out our how-to video on how to Check Piston to Valve Clearance

Emissions Note
  • These cylinder heads DO NOT have the provisions for smog and, therefore are not 50 state legal.

This product is intended for off-road use only. Off-Road Disclaimer


SVE Products Limited Warranty - Click Here

  • Ford Mustang - 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995
  • Engines: 5.0, 5.8
Fitment Notice
  • Fits 1979-1995 Mustang w/ 5.0 or 5.8 Motors

Recommended Components:

More videos of this product!

How much power?! 302ci Small Block Ford Engine Build & Dyno w/ SVE 170cc Cylinder Heads How much power?! 302ci Small Block Ford Engine Build & Dyno w/ SVE 170cc Cylinder Heads
(9:39)
SVE Aluminum Cylinder Heads for Small Block Ford 302/351 | 170cc & CNC'd 185cc - Overview SVE Aluminum Cylinder Heads for Small Block Ford 302/351 | 170cc & CNC'd 185cc - Overview
(8:01)
How To Install 302/351 Mustang Cylinder Heads & Valvetrain (1979-1995) How To Install 302/351 Mustang Cylinder Heads & Valvetrain (1979-1995)
(6:17)
How To Check Pushrod Length 302/351 Mustang (79-95) How To Check Pushrod Length 302/351 Mustang (79-95)
(2:42)

Check out our YouTube channel for even more tech tips, installation videos, how-tos, and more. The best place to go for anything Mustang related!

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About This Brand


SVE Special Vehicle Equipment ®

SVE Special Vehicle Equipment is a brand focused on providing superior performance and restoration parts for 1979-present Mustang and Ford Lightning trucks. From kits to swap solutions, SVE fuels the enthusiast lifestyle with problem-solving solutions that provide performance with a purpose. Comprised of the highest quality materials, all SVE products display the thorough research and meticulous attention to detail that went into the development of that part. Rest assured that when you purchase an SVE part, you will know you are purchasing a quality solution that will save you time and money.

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