JEGS
Small Block Chevy Cast Iron Vortec Cylinder Head for 1996-2002 Chevy 5.7L
555-514080
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Vortec Cast Iron Cylinder Head
JEGS 555-514080 Vortec Cast Iron Cylinder Head Features:
- Fits all 1955-2002 Chevy small blocks except LT1, LT4, and LS-style engines
- Utilizes fast-burn combustion chambers and high-velocity intake and exhaust ports
- Performs great right out of the box and can be mildly ported and milled up to 0.040 inch
- Requires a Vortec-style intake manifold to complete installation
- Specifications: 1.940 in. intake Valve, 1.500 in. exhaust valve, 170cc intake ports, .475 in. max lift, straight spark plug design, 3/8 in. rocker arm studs, 64cc combustion chambers, 1.250 in. O.D. valve springs
JEGS 555-514080 Vortec Cast Iron Cylinder Head Notes:
This Cast Iron Vortec Cylinder Head for Small Block Chevy with 170cc Intake Runners is a bolt-on replacement for the 1996-2002 Chevy 5.7L Truck Engines.
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Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
FAQ
Can I put Vortec heads on an older 350?
- Yes, JEGS Vortec heads, like the 51480, are designed for older 350 engines, providing enhanced performance and efficiency. Ensure compatibility with your specific setup. You will also need to use a Vortec intake manifold when using Vortec heads.
How do I identify my 5.7 Vortec head?
- Identify your 5.7 Vortec head by locating casting numbers and unique features. Consult JEGS resources for detailed guides on recognizing Vortec heads for accurate identification.
How much are Vortec heads worth?
- Pricing for JEGS Vortec heads varies. Check the product page for the latest information on costs and consider the performance benefits they bring to your Chevy 350 engine.
How much HP will Vortec heads add?
- JEGS Vortec heads can add significant horsepower gains to your engine. Exact numbers depend on your setup, but they are known to enhance combustion efficiency for improved performance.
Specifications:
Part Type
Product Line
Combustion Chamber Volume (cc)
64
Cylinder Head Finish
Natural
Cylinder Head Material
Cast iron
Cylinder Head Style
Assembled
Engine Make/Size
Chevy 5.7L (Vortec)
Exhaust Runner Volume (cc)
61
Exhaust Valve Diameter
1.5 in (38.1 mm)
Exhaust Valves Included
Yes
Guideplate Pushrod Size
0.313 in (7.95 mm)
Guideplates Included
No
Intake Runner Volume (cc)
170
Intake Valve Diameter
1.94 in (49.276 mm)
Intake Valves Included
Yes
Locks Included
Yes
Material
Cast Iron
Maximum Valve Lift
0.475 in (12.065 mm)
Number of Springs Per Valve
Single
Outside Diameter of Outer Spring
1.25 in (31.8 mm)
Package Depth
6.40
Package Height
21.50
Package Width
9.70
Part Category
Performance Parts
Part Fitment
Semi Universal
Quantity
Sold individually
Retainers Included
Yes
Rocker Arm Nut Thread Size (in.)
3/8"-24
Rocker Arm Studs Included
Yes
Shipping Weight
47.37
Spark Plug Style
Straight
Valve Springs Included
Yes
Valve Stem Seals Included
Yes
514080 is rated
out of
5 by
15.
Rated 5 out of
5
by
MTMike from
Great heads for a reasonable price.
Bought these heads after making the mistake of buying a set of reman ATQ heads. They fit amazing, look great and are priced pretty reasonable.
Date published: 2023-04-26
Rated 5 out of
5
by
Danny AW from
Vortec cast iron replacement heads
Really nice heads. Put them on, runs perfectly. I'd buy another set in a second.
Date published: 2022-02-17
Rated 5 out of
5
by
JMCC from
Buying new GM cylinder heads
I brought two new cylinder heads from JEGS to fit onto my 1999 Chevy Suburban which has the 350 cubic inch Vortex engine. Both of the old original heads were cracked and while the engine was still running OK it was "drinking" coolant. The intake manifold gaskets had been previously replaced. JEGS had the replacement heads in stock and at a very good price. The heads came complete with valves and assembled.
The delivery was prompt and within three days of placing the order. No other supplier had these heads new and for that price! I appreciate the service and will be back to buy from JEGS again. Thank you
Date published: 2022-02-02
Rated 4 out of
5
by
Rocket Rod from
Vortec heads..great option!!
Appears to be good castings. Direct replacement and fit well. I pulled a few springs and seats look good too.
Great value!
Date published: 2022-09-09
Rated 4 out of
5
by
Txchevy from
Good price
Nice for heads for the money. The dowel pin holes are tighter tolerance. The machine work is pretty good. Can't complain to much. Good price good customer service.
Date published: 2021-10-29
Rated 1 out of
5
by
Junior V from
Rocker head bolts leaking
I purchased these a few months ago and I recently took it to a professional mechanic shop and the bolts that hold the rockers, started leaking water on all the bolts. I don’t know if it’s poor manufacturing issues or they damaged them due to poor packaging because I received the heads with the bolts sticking out of the box. I will be calling soon. Note: I was replacing the tbi head from from 94 c1500 to these vortec heads with vortec intake manifold.
Date published: 2024-03-19
Do I need to change valve springs to run a hyd. roller cam with .450 lift on both intake and exhaust?
The Jegs 555-514080 cylinder head will work with a .450 lift cam.
Date published: 2024-04-12
Do these have the coolant bypass ?
The Jegs 555-514080 cylinder head is same as stock for '96-02 model years.
Date published: 2024-02-07
are self aligning rocker arms required with these heads
The Jegs cylinder head uses self aligning rocker arms.
Date published: 2024-01-22
Will the valve springs need to be changed on these heads to run a comp 268 hydraulic flat tapper cam. The cam has .454 lift.
The springs on the Jegs 555-514080 will have to be changed for a flat tappet cam.
Date published: 2024-03-04
Can I run a roller cam for an old style sbc?
The Jegs 555-514080 Vortec cylinder head will work with a stock Vortec roller cam.
Date published: 2023-12-14
I have a 99 4 door Yukon 2wd with the 5.7 Vortec motor. Will these heads be a direct swap for the factory ones? Can a set of roller rockers be used on? My mechanic told me to make sure that the head I order are for a roller cam 5.7.
The Jegs 555-514080 cylinder head is a direct swap for a '99 Yukon with 5.7.
Date published: 2023-12-12
Do these heads have casting numbers on them
The Jegs 555-514080 cylinder head does have a casting number.
Date published: 2023-12-07
Are the valves stainless steel?
The Jegs 555-514080 cylinder head uses stainless valves.
Date published: 2023-11-30
Some parts are not legal for use in California or other states with similar laws / regulations
Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
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