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AFR 190cc Vortec Eliminator Street Cylinder Heads 912

Airflow Research (AFR) 912 - AFR 190cc Vortec Eliminator Street Cylinder Heads

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Cylinder Heads, Aluminum, Assembled, 190cc Intake, 64cc Exhaust, 65cc Chamber, Chevy, Small Block, Pair

Estimated USA/International Ship Date: Loading...Processing Today INTERNATIONAL Customer Options

  • Order this item and get free delivery and handling on your entire order! Offer excludes truck freight and oversize fees. Valid on orders shipped in the contiguous United States.

Brand: Airflow Research (AFR)

Manufacturer's Part Number: 912

Part Type: Cylinder Heads

Product Line: AFR 190cc Vortec Eliminator Street Cylinder Heads

Summit Racing Part Number: AFR-0912

Combustion Chamber Volume (cc): 65

Intake Runner Volume (cc): 190cc

Exhaust Runner Volume (cc): 64cc

Cylinder Head Style: Assembled

Cylinder Head Material: Aluminum

Intake Port Shape: Rectangular

Intake Valve Diameter (in): 2.020 in.

Cylinder Head Finish: Natural

CNC-Machined Combustion Chamber: Yes

CNC-Machined Intake Runner: No

CNC-Machined Exhaust Runner: No

Combustion Chamber Style: Heart

Intake Port Location: Standard

Exhaust Port Shape: Square

Exhaust Port Location: Raised

Spark Plug Style: Straight

Intake Valves Included: Yes

Exhaust Valves Included: Yes

Exhaust Valve Diameter (in): 1.600 in.

Valve Springs Included: Yes

Maximum Valve Lift (in): 0.600 in.

Outside Diameter of Outer Spring (in): 1.290 in.

Damper Spring Included: Yes

Number of Springs Per Valve: Dual

Retainers Included: Yes

Retainer Material: Chromoly steel

Locks Included: Yes

Lock Style: 7 degree

Valve Stem Seals Included: Yes

Rocker Arm Studs Included: Yes

Rocker Arm Nut Thread Size: 3/8-24 in.

Rocker Arms Included: No

Rocker Arm Nuts Included: No

Guideplates Included: Yes

Guideplate Pushrod Size: 5/16 in.

Valve Cover Mounting Style: Center and perimeter bolt

Accessory Bolt Holes Drilled: Yes

Intake Valve Angle: 23

Exhaust Valve Angle: 23

Valve Guides Included: Yes

Valve Guide Material: Bronze

Valve Seats Machined: Yes

Valve Seat Machine Style: 3-angle

Valve Seat Material: Ductile iron

Steam Holes Drilled: No

Oiling Style: Through pushrod

Machined for O-Ring: No

Heat Crossover: No

Quantity: Sold as a pair.

In-Store Pickup: Choose In-store pick-up (OH, NV, GA, TX) on our web site.

Calculator Compression Calculator

AFR 190cc Vortec Eliminator Street cylinder heads have exceptional flow characteristics, are 50-state street legal, and the preferred choice over rebuilt factory heads. They feature 100 percent CNC-ported chambers, A356 aluminum castings, and high-quality components.

These heads are recommended for street, strip, and towing engines operating up to 6,000 rpm from 350 to 383 cu. in. For performance, strength, and ease, install AFR 190cc Vortec Eliminator Street cylinder heads.

Additional features include:

* 3/4 in. extra-thick head deck
* 2.020 in. intake and 1.600 in. exhaust valves
* Center and perimeter valve cover bolt patterns
* 0.100 in. raised exhaust port
* Not compatible with self-aligning rocker arms

Warranty

Questions & Answers Ask a Product Question
Q:

Are the studs screw in or pressed

Asked by DENNIS on May 13, 2019

A:

Screw in. They are used to position the pushrod guide plates.

MICHAEL from WA answered on May 15, 2019

+See All Answers (4) Answer This Question

Q:

will these work on a block that has a bore of 4.060 will the .060 extra mess anything up?

Asked by PHYLLIS on April 11, 2017

A:

There are other factors to take into consideration, but the extra .060 should not make any difference when using these heads. If you are using dome pistons, that might be a problem, as I understand that vortec type heads are not compatible with dome pistons. Also, these heads are not compatible with self aligning rockers.

JOHN from MS answered on April 11, 2017

+See All Answers (2) Answer This Question

Q:

I'm looking for aluminum heads for my 1997 5.7 vortec, will these heads fit the l31 block? and how much horsepower can i expect to gain by bolting these heads on. thanks

Asked by ABDULLA on September 16, 2018

A:

The 190cc vortec heads will bolt-on to your L31 block, however you will need to replace your intake manifold as your current heads have a different intake bolt pattern (specific to the L31) the heads themselves paired with a good cam, intake manifold and exhaust should increase your HP by at least 50.

Airflow Research (AFR) Airflow Research (AFR) Answer - September 27, 2018

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Q:

Recommended pushrod lenght?

Asked by DARSHAUN on April 06, 2018

A:

Thank you for your question. When changing cylinder heads like the AFR 912 Vortec 190cc Eliminators pushrod length must be measured due to the variables of your specific engine build. Trick Flow 9000 is the appropriate length checker for a hydraulic roller cam and these heads.

Summit RacingSummit Racing Answer - April 07, 2018

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Most Helpful Reviews Review This Product

2 Customer Reviews for Airflow Research (AFR) 912 - AFR 190cc Vortec Eliminator Street Cylinder Heads

Average Customer Review

5 Star

(2)

4 Star

(0)

3 Star

(0)

2 Star

(0)

1 Star

(0)

+See All 2 Reviews

0912

AFR-0912
Great product from a great company, gave new life and power to the old L31, coupled with GM's Hotcam and a Stall Converter these heads deliver the goods!

0 of 0 found this review helpful.

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Reviewer: from Chile

Date: April 19, 2017

Appearance
Ease of Installation
Price/Value
Quality

Old set ?

Summit RacingSummit Racing Verified Purchase

AFR-0912
Nice heads they area as described on web page. Quality looks good. My set must have been sitting around for a while as there is rust on the valves ? (I thought stainless did not rust) The date code on the box is the middle of last year. Does not look like it will affect anything but I will disassemble and completely clean the heads before installing them. I was hoping to have a set to unpackaged and install but not my luck. ...read more

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Reviewer: from CA

Date: February 17, 2017

Appearance
Ease of Installation
Price/Value
Quality

Some parts are not legal for use in California or other states with similar laws / regulations

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