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Description
Proflow Cylinder Heads, AirMax-B 185, SB Ford 289, 302, 351W, Aluminium, Bare Cylinder Heads, 61cc Chamber, 185cc Intake Runner, Pair - PFEAHF18560-BAREPart Number: PFEAHF18560 BARE Proflow Cylinder Heads, AirMax 185, SB Ford 289,3 02, 351W Bare Proflow does not sacrifice quality for a low priceyou get both with our aluminium cylinder heads. The lightweight heads are cast from A 356 aluminium alloy with a large choice of Engine, for SB & BB Chevrolet, LS Chev Holden Ford SB 289 351W, 302,351 Cleveland 2V & 3V & BB FE, and Chrysler SB & BB, phosphorous bronze valve guides, and ductile iron valve seats
Part Number: PFEAHF18560-BARE
Proflow Cylinder Heads, AirMax 185, SB Ford 289,3 02, 351W Bare
Proflow does not sacrifice quality for a low priceyou get both with our aluminium cylinder heads. The lightweight heads are cast from A-356 aluminium alloy with a large choice of Engine, for SB & BB Chevrolet, LS Chev Holden Ford SB 289-351W, 302,351 Cleveland 2V & 3V & BB FE, and Chrysler SB & BB, phosphorous bronze valve guides, and ductile iron valve seats for use with unleaded gas. They're also end-milled and drilled for accessories. The fully assembled heads have stainless steel valves, High Performance valve springs, 7 degree valve locks, rocker arm studs, and guideplates. Perfect for your Mild or High performance Hot Rod.
Note: We suggest using Proflow Head Bolt Stepped washers part number PFEAHF-HBW. Proflow head bolt insert washers are designed to be used on Ford Windsor cylinder heads in applications where you have 7/16" head bolts being used in 1/2" bolt holes. This stops the head bolt hole distorting on aluminium heads when using 7/16'' bolts on 289 / 302 standard Windsor blocks.
SPECIFICATIONS |
|
| Material | A356 Aluminum |
| Intake Port Volume | 185cc |
| Intake seat size | 2.02 |
| Exhaust seat size | 1.60 |
| Intake Port Dimension | 2.045" H x 1.205" W x 3/8 Radius |
| Intake Port Location | Stock |
| Exhaust Port Volume | 63cc |
| Exhaust Port Dimension | 1.355" H x 1.360" W |
| Exhaust Port Location | Stock |
| Combustion Chamber Size | 58cc |
| Valve Cover Bolt Pattern | Perimeter Bolt |
| Valve Angle | 20° |
| Valve Spring Pocket Diameter | 1.460" O.D |
| Max Valve Spring Pocket Machining | 1.625" O.D |
| Deck Thickness | .750" |
| Minimum Bore Diameter | 4.000" |
| Flat Mill | .006" per cc 54cc Max (from 58cc); 68cc Max (from 72cc); |
| Angle Mill | .009" per cc 48cc Max (from 58cc); 62cc Max (from 72cc) |
| Note | Angle mills might require a.120" Thick intake gasket. |
| Minimum Cross Sectional Area | 2.025 sq. in. |
| Spark Plug Dimensions | 14mm x.750" w/Gasket Seat |
| Head Bolt Diameter | 1/2" |
FEATURES |
| Stud Mount - Non-Emissions Legal |
| Combustion Chamber |
| 8mm Bead Lock Intake Valve 2.020" x 4.900" O.A.L.: 11/32 guide is an option |
| 8mm Bead Lock Exhaust Valve 1.600" x 4.950" O.A.L. |
| Pedastal 8mm Bead Lock Intake Valve 2.020" x 5.080" O.A.L |
| Pedastal 8mm Bead Lock Exhaust Valve 1.600" x 5.100" O.A.L |
| Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat,.600" maximum lift, Max RPM 6300-6500 (upgrades available) |
| 7° Manley Steel Retainers 1.245" O.D x.885" I.D x.655" I.D |
| 7° Bead Lock Valve Keepers |
| 3/8" Rocker Studs |
| 5/16" Guide Plates |
| Viton Valve Seals.600" O.D x.495" I.D |
| Hardened Valve Spring O.D Locator 1.380" O.D x.570" I.D |
| Powder Metallurgy Intake Valve Seats 2.131" O.D x 1.680" I.D x.375" Deep |
| Powder Metallurgy Exhaust Valve Seats 1.650" O.D x 1.350" I.D x.375" Deep |
| 8 mm Bronze Valve Guides.502" O.D x 2.100" O.A.L |
| Thermactor Air Injector Reducer Bushing (5/8"-11 x 7/16"-14) |
RECOMMENDED COMPONENTS |
|
| Intake Port Gasket, Fel-Pro #1262 | |
| Important | Do not port match your intake manifold to Fel-Pro gasket as it does not precisely fit the heads. |
| Exhaust Port Gasket, Fel-Pro #1415 | |
| Head Gasket | 302/351W, Fel-Pro #1011-1 |
| SB Ford 1/2" Bolt Head Bolts, ARP #154-3603 | |
| SB Ford 1/2" Bolt Head Studs, ARP #254-4503 | |
| 1/2" Bolt - 7/16" Thread Head Bolts, 289/302W | ARP 254-3708 |
| Head Bolt Washers | Manley |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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4.7 ★★★★★
Based on 82 reviews
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Product Reviews
★★★★★ 5
Strong Omegaverse Comfort and a Attention Grabbing Plot
Format: Kindle
Jillian West never misses when it comes to Omegaverse, and Not Ready is no exception. This story was the perfect blend of cozy comfort and emotional depth while still delivering a strong plot.
Vale is such a powerful heroine, she is strong, capable, and determined but I love that she still allows her pack to love and take care of her. It’s that balance of independence and vulnerability that makes her so relatable.
The relationship dynamics were amazing: Bishop is steadfast and completely head over heels, Mercy is skeptical but protective in his own way, and Holt is the hesitant one whose slow fall is so satisfying to watch unfold.
The romance hits that sweet spot between insta-love and cautious build, keeping me hooked the entire way through. And that ending. Oh my god, the cliffhanger! I need the next book in this duet immediately.
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Reviewed in the United States on August 28, 2025
★★★★★ 5
Interesting
Format: Kindle
So I will say I enjoyed the story, for sure had its moments where it dragged but it was a great story. I really liked that omegas picked their alphas/make the pack. Normally the Alphas make it and the omega fits in with them which is great but I enjoyed this new version where all the power basically went to the omega. It was a nice change of pace. I can admit some of the weird bedroom stuff with her being pregnant was odd, it’s really not hard to do stuff when pregnant (I know I’ve had two and it’s normal and even encouraged at the end especially if you want the baby out). But I like the story as a whole and will read the second, I do hope the next one isn’t dragged bc it stopped being action or tense after she met her alphas and I don’t think it was brought up or properly done when they tried to do it. More sweet after she left.
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Reviewed in the United States on November 11, 2024
★★★★★ 3
I’m a little disappointed.
Format: Kindle
I usually like Jillian West’s books but this one was missing a lot for me. The pregnancy didn’t come across as real. She’s on her feet for 12 hour days but is perfectly healthy at 8 months pregnant? Yet the week she moves in all of a sudden she’s not? She is planning on actually running during one of the plot buildups. But at 8 months pregnant that’s incredibly hard to do. The lack of breathing ability and lung space, the change in body center, mass, and gravity. All of it prohibits running, unless you’re an athlete this didn’t come off as at all realistic.
I didn’t feel any connection with the alphas. There wasn’t any emotional connection. It could be because of the tense it was written in. But I didn’t get any deep feelings out of this. It came across as checking off boxes. Even the spicy scenes weren’t really believable for me. I wanted to see them fall for her, and it just kind of all fizzled. Even Bishop.
One thing I did really like was the ending. I did not see it coming and I’m interested in reading book two because of it. But on the whole this book was mostly disappointing for me.
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Reviewed in the United States on March 16, 2024
★★★★★ 4
4.25 stars
Format: Kindle
Vale is an 8 month pregnant omega working as a waitress at a strip club and a cam girl. She starts to get very creepy vibes from a regular at the club, and her baby daddy ghosted her. She has had an online relationship with a man named Bishop through her cam girl status. One night, bishop was paying to watch her sleep and ansthe creepy regular Andrew break in and watch her sleep he tells vale to come to him at his business now. She flees and finds herself at a large security company with some.hot of alphas who are there to help her. This imegaverse is a little different than I have read, but I am thoroughly enjoying it. Vale is not a traditional omega she was raised by a single beta mom, and the alphas are not normal alphas they have never really loved pack life. But they are ruthless mercenaries. They need her, and she needs them. I love the aspect of the stalker and now the plot twists at the end, so so good. Sometimes, it seemed a little slow and stale mated, but since this a duet, I think It was just her starting to have Vale get to know her alpha suitors. Cliffhanger for sure with this one.
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Reviewed in the United States on September 9, 2024
★★★★★ 5
That ending 😫
Format: Kindle
I fell into a false sense of security and really thought this was gearing towards a happy ending. Then I realized there’s no work they don’t punish Andrew. I really liked Vale’s character. I don’t normally read books with pregnancy but going into this knowing she was pregnant made it more enjoyable for me.
I loved Bishops devotion to her and her happiness. I also loved that Holt and Mercy couldn’t fight their attraction to her. I love scent matches so very much. I’m so curious to see how this duet will end up. And I need to pay more attention and notice that a book I’m starting is a duet to begin with lol
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Reviewed in the United States on February 21, 2025