AFR Cylinder Head Aluminum 165cc Intake 3/8" Stud 58cc Chambers Without EGR Pair 289/302/351W

Air Flow Research: AFR-1399
MSRP: $1,643.00
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$1,593.71
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Make sure to add the bolts that are necessary to mount these cylinder heads.
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AFR Cylinder Head Aluminum 165cc Intake 3/8" Stud 58cc Chambers Without EGR Pair 289/302/351W
Air Flow Research

Product Description

Pair of Assembled Air Flow Research Aluminum 165CC Cylinder Heads with 58CC Combustion Chambers for 289, 302 and 351W Engines without EGR.

These heads come ready for the maximum street or strip Small Block Ford performance possible. These 165cc performance heads are non-emissions legal and come with lightweight 8mm 1.900" intake valves and 1.600" exhaust valves. As well, they come with 58cc combustion chambers and a 70cc ultra high flowing nitrous exhaust port. With AFR's trademark 3/4" thick head deck, it's no problem handling that additional cylinder pressure. Each head is also drilled with 1/2" head bolt for maximum head gasket retention as a standard feature of this serious race piece in street design.

Cylinder Head Specifications:
Intake Port Size: 165cc
Exhaust Port Size: 70cc
Combustion Chamber Size: 58cc
Intake Valve Size: 1.900"
Exhaust Valve Size: 1.600"
Stud Mount Rockers: 3/8"
EGR: No

As you upgrade you engine to get the best performance out of it possible, cylinder heads are likely high on your list. Air Flow Research has over 30 years of cylinder head development experience and is going to have the perfect cylinder heads for your performance Small Block Ford. Check out their products that are available from CJ Pony Parts and give your engine a huge performance upgrade.

Purchase this Pair of Assembled Air Flow Research Aluminum 165CC Cylinder Heads with 58CC Combustion Chambers for your 289, 302 or 351W Engine without EGR from CJ Pony Parts today!

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Installation Instructions

Mustang Installation

Bronco Applications

This product will fit the following Ford Bronco years:

Product Reviews

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Product Questions

Hi I'm looking to upgrade my 5.0 HO out of a 1991 t bird it is basically a stock motor still using the original fuel injection.I have heard that one of the best gains is fitting the afr heads as this will give the most as a bolt on please could you advise

Asked by: Pop302
A set of aluminum performance heads will increase the performance of the engine when tuned properly.
Answered by: rk cjpp
Date published: 2016-09-30

Will the standard rockers fit the pedestals, and will these require longer pushrods than standard on a 289  ? Thanks

Asked by: Daman
This will use stud mounted push rods.This seems like an easily answered question, however, there are many variables. Block and cylinder head deck heights, head gasket thickness, varying cams, rockers arms, and valve length can all affect pushrod length. Please see our following best estimates: for 165, 185 or 195cc standard or .100” long pushrods work in most cases. For 205 or 220cc typically .100” or .200” long pushrods will usually achieve proper geometry. For exact pushrod length we suggest using an adjustable pushrod to determine the proper length pushrod to be used.
Answered by: rk cjpp
Date published: 2016-06-28

Sorry I accidentally clicked on the 165 heads when asking my last question.  Meant to ask if the 185 heads would be a better choice then the z heads it wasn't a typo. 

Asked by: Raun82
That would all depend on what you are going to use the engine for and what cam you are using.
Answered by: rk cjpp
Date published: 2016-05-18

Would these 185's be a better choice on the z363 crate motor rather then the ford z heads that come on it? 

Asked by: Raun82
The ford head has larger intake valves and larger combustion chamber.
Answered by: rk cjpp
Date published: 2016-04-20

Can these be used in a 331 stroker engine as well ?

Asked by: Stuart
Yes a 331 is the same block as a 289/302 just stroked out.
Answered by: 1967
Date published: 2016-05-04

AFR 6226 - Ford Reducer Bushing Are these not included when you buy the heads. If so it is really inconvient when you have it all together then you have to order these seperate

Asked by: MustangMat
  • 2016-12-03T07:55CST
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