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AFR CHEVY SBC 406 421 434 ELIMINATOR HEADS 220cc 65cc FULLY BUILT # 1065-HR-65

$1,729.00

Available



Product Information

UPC351087981739
Product TypeShipped Product
Shipping Cost $0
Number of reviews 0

AFR 220cc RUNNERS 65cc CHAMBERS ELIMINATOR ALUMINUM HEADS. ANGLE PLUG. FULLY CNC'd

AIR FLOW RESEARCH

This sale is for a fully assembled set of heads.

The springs in this setup are to operate with hydraulic roller cams up to .600 lift.

READY TO INSTALL.


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PICTURED ABOVE ARE OUR FULLY CNC'D AFR HEADS.

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The AFR heads are the best aftermarket cylinder heads in the world. Quality, performance, and reliability are excellent.

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The information below pertains to our testing with the AFR 220 heads. This sale is for a set of 220cc heads setup for hydraulic roller cams. From what we have seen on the flow charts, the 220cc heads do slightly edge out the 210's but not by much. We suggest using the 220cc heads on very aggressive setups coupled with cams in the 600 lift or more range, with higher amounts of duration than what is common in most street rods. These heads will most likely prevail when run hard. We have not done any testing yet on the 220's but they are sure to make excellent power. These heads may be on the larger than needed side for most hyd. roller cam builds, but should you ever decide to increase your cam and or cubic inch on your engine, you would not be outgrowing the 220cc heads for certain.

As our company founder explains it, the results you experience with the AFR heads will vary greatly by what type setup you are running. The engine combos we have dynoed are what most people have chosen to use as far as cam and intake selection goes, and we have some of the results listed below. The engines dynoed with the 220cc heads were mostly sbc 421, 427, and 434

engines in the 10:1 to 10.5:1 compression range, give or take. We also did an aggressive 406 build with the 210 heads. Normally, we use the 195cc heads on the 406 but found the 220's suitable due to the cam size of this one particular engine. All run on pump gas.


Our 421 through 434 engine ads have a selection of four different cams and these engines all come with AFR heads. This has given us a great opportunity to see how they performed. We were able to test several different cam setups with these heads. This will give you an idea on what these heads are capable of with a given combination of cam, intake, rockers, and carb. This may also help you select a proper cam for your build.

We feel the 220cc AFR heads would perform very well on a medium to aggressive 421, 427, or 434 build or a somewhat Pro-street 406. As mentioned, below is just an excerpt from our 421-434 ads. If you're using a lower lift than those listed below, then it would be fair to say the hp will drop, but not by much, providing your lift and duration are somewhat close to any of the cams mentioned below. This will give you an idea of what kind of power to expect with these heads, and it can certainly help you choose a cam and intake.

Please do understand that a cam is not included with the heads. This is just a guide to show what you may expect with a given combination when building your engine.

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Special Grind # 13459

PART NUMBER: 12-000-8-11321

598/583 lift

253/261 duration

110 lobe sep.

Comp Cams SBC Xtreme Energy Hydraulic Roller Camshafts.

Official Dyno results using this cam in a 434 engine with a Q-950 carburetor and an MSD distributor with AFR 75cc heads.

598 583 comp cam 434 engine hetzel dyno photo b4e31452-444c-4f7b-bc24-5bb9d68f7168.jpg

598 583 comp cam 434 engine hetzel photo 459391d1-9a17-4ebb-88d9-8b1fe7fdb6f0.jpg

An excerpt from our engine ad about our new dyno.

As of 9/15/2013 we have completed installation of our brand new Super Flow 902S dyno. In the past, we have outsourced our dyno work. Never being able to do the research and development we truly wanted, prompted us to make the $105,000 investment. Needless to say, it's been the best investment we have ever made. Every aspect of our engines can now be monitored, calibrated, and tuned. Best of all, we can see what combos make the best power, with consideration to drivability.

One thing we have noticed is that the de-tuned engines with different cam and intake combos certainly do have less top end horse power, as expected, but the torque increase in the low rpm range is much greater than the higher horse power setup. This increase in torque down low is what you want if you're sporting around on the street, rather than all out racing. The de-tuned version of our engines will also allow you to set the car up closer to stock and increase drivability to a very high degree. Throttle response is also noticeably better.

One of the worst mistakes you can make building up an engine is to get a mismatched combination of parts. We know about combinations and how they work. Take a test drive in a car with over 400hp vs. a 300hp or less and you will then see what you’re missing. The exhaust sound under load is very pleasing. We are very pleased with everything about the AFR heads. Few if any of the others know much about the correct way to setup a set of cylinder heads.

Accessory Bolt Holes Drilled

Yes

CNC-Machined Combustion Chamber

Yes

CNC-Machined Exhaust Runner

Yes

CNC-Machined Intake Runner

Yes

Combustion Chamber Style

Heart

Combustion Chamber Volume (cc)

65

Cylinder Head Finish

Natural

Cylinder Head Material

Aluminum

Cylinder Head Style

Assembled

Damper Spring Included

Yes

Exhaust Port Location

Raised

Exhaust Port Shape

Square

Exhaust Runner Volume (cc)

80cc

Exhaust Valve Angle

23

Exhaust Valve Diameter (in)

1.600 in.

Exhaust Valves Included

Yes

Guideplate Pushrod Size

5/16 in.

Guideplates Included

Yes

Heat Crossover

Yes

Intake Port Location

Standard

Intake Port Shape

Rectangular

Intake Runner Volume (cc)

220cc

Intake Valve Angle

23

Intake Valve Diameter (in)

2.100 in.

Intake Valves Included

Yes

Lock Style

10 degree

Locks Included

Yes

Machined for O-Ring

No

Maximum Valve Lift (in)

0.670 in.

Notes

Not compatible with self-aligning rocker arms.

Number of Springs Per Valve

Dual

Oiling Style

Through pushrod

Outside Diameter of Outer Spring (in)

1.290 in.

Quantity

Sold as a pair.

Retainer Material

Chromoly steel

Retainers Included

Yes

Rocker Arm Nut Thread Size

3/8-24 in.

Rocker Arm Nuts Included

No

Rocker Arm Studs Included

Yes

Rocker Arms Included

No

Spark Plug Style

Angle plug.

Steam Holes Drilled

No

Valve Cover Mounting Style

Center and perimeter bolt

Valve Guide Material

Bronze

If you have any technical questions about these heads or if you need to know if they are right for your application, feel free to contact us with your question.

For overseas shipping quotes, contact us using the contact seller tab.

A final note,

Our eBay user id is: skipwhite, and our eBay store name is whiteperformance1. You may have noticed other sellers using a similar name offering similar products. These other sellers have capitalized on our name as we see it, and many customers searching for us will inadvertently find them, thinking we are one in the same company. There is only one "Skip White" We are the original premier eBay seller under this name since approximately 2002. We have no other eBay names, nor are we associated with any other company regardless of the similarity in the name or location. Our official company name is Skip White Performance.

Skip White

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