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Ships within 48 hours · Estimated delivery Jul 14 - Jul 19
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Description
BluePrint Chev 350 Aluminum Assembled Single Cylinder Head 220cc # HP8103DESCRIPTION: Get big power on a small budget with BluePrint Muscle Series cylinder heads! These lightweight aluminum heads bolt up to your small block Chevy and feature 220cc intake 67cc exhaust runners, 64cc combustion chambers, and 2. 08" intake 1. 60" exhaust valves. They're fully assembled with valve springs, retainers, locks, guideplates, studs, and seals. Maximum output for less money! Designed and produced by BluePrint Engines Fully assembled
DESCRIPTION:
- Get big power on a small budget with BluePrint Muscle Series cylinder heads! These lightweight aluminum heads bolt up to your small block Chevy and feature 220cc intake/67cc exhaust runners, 64cc combustion chambers, and 2.08" intake/1.60" exhaust valves. They're fully assembled with valve springs, retainers, locks, guideplates, studs, and seals.
- Maximum output for less money!
- Designed and produced by BluePrint Engines
- Fully assembled with heavy duty components
- Backed by our full 12-month limited warranty
INTAKE:
- Intake Runner Volume (cc): 220cc
- Intake Port Location: Standard
- Intake Valves Included: Yes
- Intake Valve Diameter (in): 2.08 in.
- CFM Port Flow Average @ 28"
- .100" 76
- .200" 137
- .300" 189
- .400" - 228
- .500" 254
- .600" - 258
EXHAUST:
- Runner Volume (cc): CNC- 65cc
- Exhaust Valve Diameter (in): 1.600 in.
- Exhaust Valves Included: Yes
- Port Shape: Square-Port
- Exhaust Port Location: Raised
- CFM Port Flow Average @ 28"
- .100" 112
- .200" 155
- .300" 186
- .400" 203
- .500" 208
- .600" - 216
COMBUSTION CHAMBER:
- Combustion Chamber Volume (cc): 64cc
- CNC-Machined Combustion Chamber: No
VALVE SPECS:
- Maximum Valve Lift (in): .650 in.
- Intake Valve Angle: 23 Degrees
- Exhaust Valve Angle: 23 Degrees
- Valve Guides Included: Yes
- Valve Guide Material: Manganese Bronze
- Valve Seats Machined: Yes
- Valve Seat Machine Style: 5-Angle
- Valve Seat Material: Chrome Nickle
- Valve Stem Seals Included: Yes
- Valve Stem Seal Style: Viton Fluoroelastomer
SPRINGS:
- Valve Springs Included: Yes
- Spring Pressure Open:360-380 @ 1.150
- Spring Pressure Closed: 115-135 @ 1.800
- Outside Diameter of Outer Spring (in): 1.295 in.
- Damper Spring Included: Yes
- Number of Springs per Valve: Dual
- Retainers Included: Yes
- Retainer Material: Chromemoly Steel
- Locks Included: Yes
- Lock Style: 7 Degree
PUSHRODS:
- Guide Plates Included: Yes
- Guide Plate Pushrod Size (in): 5/16 in.
ROCKER ARMS:
- Rocker Arm Studs Included: Yes
- Rocker Arm Stud Size (in): 7/16 in.
- Rocker Arms Included: N/A
- Rocker Arm Nuts Included: No
MISC:
- Head Style: Assembled
- Cylinder Head Material: Aluminum
- Cylinder Head Finish: Natural
- Spark Plug Style: Straight .750 Reach Gasket
- Spark Plug Placement: Vortec
- Cover Mounting Style: Perimeter & Centert Bolt
- Steam Holes Drilled: No
- Oiling Style: Through Pushrod
- Machined for O-Ring: No
- Heat Crossover: No
- 3/8 -16 in. Accessory Bolt Holes Machined On Ends Of Heads
- Exhaust ports raised approx .500 vs oem iron castings
QTY:
- Sold Per Single
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]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 2350 reviews
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Product Reviews
★★★★★ 4
Great jeans
Size: 36W x 29L, Color: Dark Stonewash
Great jeans great fit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
★★★★★ 5
Fits to size. Nice quality. Heavy denim
Size: 33W x 32L, Color: Dark Stonewash
My husband lives his jeans. Perfect fit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 11, 2026
★★★★★ 5
Honest value for money!
Size: 46W x 30L, Color: Black
I bought these pants (46 X 30 in black) figuring that they would probably be so-so like everything else that seems to be made for people that aren't "perfectly shaped."
I'm VERY happy to report that I was wro...wroooo....um...less right than usual. ;-) (Obviously, I'm a guy.) Anyway, they fit well, feel quite comfortable, including plenty of room up front for sitting for too long, driving etc. No binding nor need to adjust. TMI? Nope...that's kinda important to us fellas.
Perhaps I just happen to be the right sort of fat, but these jeans fit better than any other (Seriously! I'm 54 and this is really true!) pair of non-tailored pants that I've ever purchased. This includes purchases I've made in stores that I've tried on the item. These still fit better than those. Yep. That would be part of, "Any."
I will be buying more and would encourage you to seriously consider these jeans. I don't work for them, they have never contacted me, except by sending what I ordered, nor am I in any way benefitting by writing a review. I don't usually write a review, but this actually moved me to want to speak up about a product/seller that shows what honest, ethical and attention to detail/customer needs and feedback.
In closing, one must ask the obvious question after reading all of this. That question is: "Do penguins have knees?" Whilst you ponder that, just think about how good those jeans are going to look on you. A coupla days later they're going to look great in the window of the laundry machine (front load) at the laundromat and again when you put them in the dryer. Other people are just going to sob quietly about how icky their clothes look when compared to yours. Okay. The fact of the matter is that, yes, penguins do have knees. Now that you know that, I'm sure you'll rest much better and probably get better fuel mileage. Of course, that may not be true.
I hope you've at least taken away from this little novel, that I'm very happy with the product and will absolutely be buying more in the near future. The rest of the silliness is just there to, hopefully, bring a little smile/sunshine into your day/night and I sincerely believe that it will be passed on from you to others, thus we can all spread a bit of happiness in a world that is in dire need of more love and less hate.
~peace to all
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Reviewed in the United States on November 3, 2018
★★★★★ 5
Good fit. Good quality.
Size: 40W x 28L, Color: Vintage Stonewash
Good fit. Good quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 8, 2026
★★★★★ 5
Wrangler Authentics Men's Classic 5-Pocket Relaxed Fit Cotton Jean
Size: 50W x 30L, Color: Stonewash
I’ve been wearing Wrangler Authentics Classic 5-Pocket Jeans for a while now, and they’ve become one of my go-to pairs. The denim is 100% cotton, so it feels sturdy yet comfortable enough for all-day wear. The relaxed fit through the seat and thighs gives plenty of room to move without looking baggy, and they sit naturally at the waist, which makes them easy to wear with just about any shirt.
The five-pocket design is classic and practical, and the stitching feels strong and durable. I also appreciate the heavy-duty zipper and button closure—they add to the overall quality and make the jeans feel like they’ll hold up over time.
These jeans strike a nice balance between workwear toughness and casual style. They look good for everyday wear, but they’re also tough enough for more hands-on activities. For the price, they’re a great value, and I’d definitely recommend them to anyone looking for reliable, no-nonsense jeans.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 17, 2025