SKU: 40306971007

Proflow Cylinder Heads, LS3 SuperMax 276 CNC Ported , Assembled, Holden, Chev Aluminium, (6-Bolt ) LS3/LSX, 276cc Intake, 70cc Chamber, Pair - PFEAHCLS3-276-6-CNC

$1274.40 $1416.00
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Description

Proflow Cylinder Heads, LS3 SuperMax 276 CNC Ported , Assembled, Holden, Chev Aluminium, (6-Bolt ) LS3/LSX, 276cc Intake, 70cc Chamber, Pair - PFEAHCLS3-276-6-CNCPart Number: PFEAHCLS3 276 6 CNC LS3 SuperMax 276 CNC Ported, Aluminium Cylinder Heads 15deg, Holden Chev, Bare Proflow does not sacrifice quality for a low price you get both with our aluminium cylinder heads. Our LS3 cylinder heads are designed for street race performance engines to give the ultimate in flow at a competitive price. Cast from A356 aluminium, these 15 LS3 rectangle port heads are designed to fit LS series engines with a 4. 00" or

Part Number: PFEAHCLS3-276-6-CNC

LS3 SuperMax 276 CNC Ported, Aluminium Cylinder Heads 15deg, Holden Chev, Bare

Proflow does not sacrifice quality for a low price- you get both with our aluminium cylinder heads. Our LS3 cylinder heads are designed for street / race performance engines to give the ultimate in flow at a competitive price. Cast from A356 aluminium, these 15° LS3 rectangle port heads are designed to fit LS series engines with a 4.00" or larger bore. These bare 275cc heads accept 2.165" diameter intake valves and 1.60" exhaust valves and have a 0.625" deck thickness. Suits 6-bolt standard or LSX block designs.

Material A356.2 Aluminum
Intake Port Volume 276cc
Intake Port Location Stock
Exhaust Port Volume 92cc
Exhaust Port Location Stock
Combustion Chamber  70cc 
Valve Angle 15°
Minimum Bore Diameter 4.000"
Maximum Valve Lift (in.) 0.55”
Intake valve  2. 165" 8mm
Exhaust valve  1. 60" 8mm
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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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
SKU: 40306971007

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4.0 ★★★★★
Based on 20 reviews
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Product Reviews
A
Verified Purchase
Amazon Customer
Alexandria, US
★★★★★ 5
Best toy for dogs
Color: Blue
My dog plays with this for hours!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
C
Chelsea H.
Los Angeles, US
★★★★★ 4
I wouldn’t recommend this for strong chewers.
Color: Orange, Color: Orange
Is it fun? Sure. Was it easy to charge and set up? Yep. That being said, this toy kind of fell flat for me. It really didn’t do any big movements once charged that I expected it to, so that was a bummer. I initially got it for my dog, but my cats were more interested in this than my dog was. The battery does seem to last a long time and the motor is pretty quiet. I WOULD NOT recommend this toy for strong chewers as the material for this is a foam rubber and I don’t think it’s durable enough for strong chewers. While the material makes this ball extremely lightweight for more movement, a strong chewer would have this disintegrated in five minutes flat. My Dog is a super strong chewer. I don’t think I would feel comfortable leaving him unattended with this because I know he would destroy it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2026
C
Verified Purchase
Charlie
Lexington, US
★★★★★ 5
Interactive puppy fun
Color: Blue
Pups love this and I enjoy watching them have so much fun. Serious playtime followed by a well earned nap!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
N
Verified Purchase
Nala Nose Best 🐾
Waukegan, US
★★★★★ 3
Well-designed and quiet, but didn’t keep my dog interested
Color: Blue
My dog was interested in this at first, but she would lose interest after a few minutes and move on. I do like that it’s quieter than the hard plastic ball toys, and the charge lasts well. The internal charging port that twists closed is also a nice design feature. That said, it will occasionally turn on by itself, which can be a little surprising. Overall, it has some nice features, but it just didn’t keep my dog engaged.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026
O
Verified Purchase
OhCaptainMyCaptain
Alexandria, US
★★★★★ 1
Good - for a few hours
Color: Blue, Color: Blue
Concept is fantastic. Dog loved it. Problem is that she figured out how to open it within two hours of play. The robot core, alas, did not survive. In the photo, you see a tooth went cleanly into the button and that was the end of the toy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026

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