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Description
Edelbrock Cylinder Head Pontiac Performer D-Port 72cc Chambers for Hydraulic Roller Cam CompleteCylinder Head Specifications: Combustion chamber volume: (A) 65cc 72cc 87cc; Intake runner volume: 204cc; Exhaust runner volume: 145cc; Intake valve diameter: 2. 11"; Valve stem diameter: 11 32"; Exhaust valve diameter: 1. 66"; Valve guides: Manganese bronze; Deck thickness: 5 8"; Valve spring diameter: 1. 46"; 120lbs. @ 1. 800" Inst. Height; Valve spring maximum lift: . 550"; 1. 150" Coil Bind; Rocker stud: 7 16"; Guideplate: Hardended steel; Pushrod
Cylinder Head Specifications: Combustion chamber volume: (A) 65cc / 72cc / 87cc; Intake runner volume: 204cc; Exhaust runner volume: 145cc; Intake valve diameter: 2.11"; Valve stem diameter: 11/32"; Exhaust valve diameter: 1.66"; Valve guides: Manganese bronze; Deck thickness: 5/8"; Valve spring diameter: 1.46"; 120lbs. @ 1.800" Inst. Height; Valve spring maximum lift: .550"; 1.150" Coil Bind; Rocker stud: 7/16"; Guideplate: Hardended steel; Pushrod diameter: 5/16"; Valve angle: 14°; Exhaust port location: Stock; Spark plug fitment: 14mm x 3/4 reach, gasket seat.. Performer Pontiac heads utilize a D-Port exhaust port configuration for use with standard D-port exhaust systems. They are designed for 1962-79 389, 400, 421, 455 cid V8 Pontiac engines with a 4.060in. or larger bore. They feature optimized oil return passages for increased oil flow. These heads are available in three heart shaped combustion chamber sizes, including 65cc, 72cc and 87cc. The 65cc combustion chambers are as-cast while the 72cc and 87cc chambers are fully CNCd to provide a 9.5:1 compression ratios when used with flat-top pistons. The spark plug has been relocated closer to the exhaust valve for improved performance. These heads are cast with extra thick port walls and a compact port size, making them ideal for CNC and hand parting. Complete heads include guide plats, rocker studs and high quality valvetrain for direct bolt-on application. Head crossover machined for 50-state emissions legal performance. INSTALLATION NOTE: 350 c.i.d. engines may require notching the block for valve clearance. Three head bolt bosses are raised higher than the standard D-port heights and will require head bolt kit #8561 to install these heads. Deck thickness: 5/8", rocker stud diameter: 7/16", pushrod diameter: 5/16" (width of slot in guide plate).Installation Instructions
Installation Instructions
Warranty
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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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.
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- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 5
My Female GSD loves
Size: Medium (2.5"), Style: Fetch Pack 1, Size: Medium (2.5"), Style: Fetch Pack 1
Shasta is my smallest. Six in December (2025) along with her brother. She’s 100 lbs and outside, completely ball driven see last picture. Don’t let the size (2.5”) of these Chuck-It balls deter you. If your larger Breed dog has any orthopedic issues, has already torn their ACL etc, one has arthritis but wants to play. This size is perfect!
Shazzy was born with several ortho issues. I don’t throw balls distance but right to her. This size and lighter weight assure even when Shazzy is spazzy w excitement, she’ll catch the ball mid air.
The green balls are softer, and glow in the dark. In summer we can play well past dusk and I can see them!
Her personality shows in the pictures. Playing ball is part of her. These balls are just perfect for her situation. Somehow they disappear, she loves making baskets, puts them in my tractor bucket, or my gardening bucket..then get put in burn pile, trash etc. I keep replacing them because she’d look day and night if we actually ran out!! 🙏✝️👍🏼👍🏼
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 3, 2025
★★★★★ 5
Fun solid ball
Style: Recharges, Size: Medium, Style: Recharges, Size: Medium
Great squeaky balls! Glow doesn’t last for a long time, but they go far in the Chuck it. Solid ball, my dog doesn’t seem to destroy them.
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Reviewed in the United States on February 11, 2026
★★★★★ 5
Great ball!
Style: Recharges, Size: Medium
The dog loves chasing it! Walks around sqeeking it all the time. And bonus, I can see it in the middle of the floor when I get up in the middle of the night so I won't unknowing step on it.
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Reviewed in the United States on May 5, 2026
★★★★★ 5
Lil boy's favorite ball
Style: Recharges, Size: Medium
The squeak gets my little boy every time. The glow factor is under par. I mainly get it because he also enjoys the brighter colors. All of the others be trying to get his ball. Good product just wish it would glow better because our park times are right around sunset.
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Reviewed in the United States on January 20, 2026
★★★★★ 5
Chuck it!
Style: Recharges, Size: Medium
My Golden Doodle absolutely loves this ball. His new favorite!
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Reviewed in the United States on April 17, 2026
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