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Description
COMP Cams Camshaft A8 299THR7 ThumperDesigned to deliver an aggressive, hard hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods, the Thumpr series' early intake valve opening and long exhaust duration create optimum overlap for that race car idle. The Thumpr grinds all require an aftermarket torque converter and lower gear ratio to ensure the drivetrain
Designed to deliver an aggressive, hard-hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods, the Thumpr series' early intake valve opening and long exhaust duration create optimum overlap for that race car idle. The Thumpr grinds all require an aftermarket torque converter and lower gear ratio to ensure the drivetrain always puts the engine in its powerband. Additionally, Thumpr camshafts typically deliver reduced vacuum at idle, making a vacuum canister, pump or hydroboost a requirement for vehicles running power brakes.This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1967 | American Motors | Ambassador | 880 |
| 1968-1970 | American Motors | Ambassador | Base |
| 1971-1974 | American Motors | Ambassador | Brougham |
| 1968-1971 | American Motors | Ambassador | DPL |
| 1968-1972 | American Motors | Ambassador | SST |
| 1966-1968 | American Motors | American | 220 |
| 1968 | American Motors | American | 440 |
| 1968 | American Motors | American | Rogue |
| 1968-1970,1978-1979 | American Motors | AMX | Base |
| 1966 | American Motors | Classic | 550 |
| 1966 | American Motors | Classic | 770 |
| 1978-1979 | American Motors | Concord | Base |
| 1979 | American Motors | Concord | DL |
| 1979 | American Motors | Concord | Limited |
| 1972-1975 | American Motors | Gremlin | Base |
| 1976 | American Motors | Gremlin | Custom |
| 1977 | American Motors | Hornet | AMX |
| 1970-1971,1973-1977 | American Motors | Hornet | Base |
| 1971 | American Motors | Hornet | SC/360 |
| 1971-1977 | American Motors | Hornet | Sportabout |
| 1970-1972 | American Motors | Hornet | SST |
| 1971-1974 | American Motors | Javelin | AMX |
| 1968-1974 | American Motors | Javelin | Base |
| 1968-1972 | American Motors | Javelin | SST |
| 1970 | American Motors | Javelin | SST Mark Donohue |
| 1970 | American Motors | Javelin | SST Trans Am |
| 1967 | American Motors | Marlin | Base |
| 1971-1978 | American Motors | Matador | Base |
| 1974 | American Motors | Matador | Brougham |
| 1974 | American Motors | Matador | X |
| 1978 | American Motors | Pacer | Base |
| 1979 | American Motors | Pacer | DL |
| 1979 | American Motors | Pacer | Limited |
| 1969 | American Motors | Rambler | 440 |
| 1969 | American Motors | Rambler | Base |
| 1969 | American Motors | Rambler | Hurst SC/Rambler |
| 1969 | American Motors | Rambler | Rogue |
| 1967-1968 | American Motors | Rebel | 550 |
| 1968 | American Motors | Rebel | 770 |
| 1970 | American Motors | Rebel | Base |
| 1968 | American Motors | Rebel | SST |
| 1966 | American Motors | Rogue | Base |
| 1979 | American Motors | Spirit | Base |
| 1974 | Bricklin | SV-1 | Base |
| 1974 | International | 100 | Base |
| 1974 | International | 100 | Travelall |
| 1974 | International | 200 | Base |
| 1974 | International | 200 | Travelall |
| 1974-1983 | Jeep | Cherokee | Base |
| 1981-1982 | Jeep | Cherokee | Chief |
| 1983 | Jeep | Cherokee | Pioneer |
| 1974-1977 | Jeep | Cherokee | S |
| 1978-1980 | Jeep | Cherokee | Wide Track |
| 1983 | Jeep | Cherokee | Wide Track Chief |
| 1971-1981 | Jeep | CJ5 | Base |
| 1977-1980 | Jeep | CJ5 | Golden Eagle |
| 1980-1981 | Jeep | CJ5 | Laredo |
| 1975-1981 | Jeep | CJ5 | Renegade |
| 1971-1975 | Jeep | CJ6 | Base |
| 1976-1981 | Jeep | CJ7 | Base |
| 1977-1979 | Jeep | CJ7 | Golden Eagle |
| 1980 | Jeep | CJ7 | Golden Hawk |
| 1980-1981 | Jeep | CJ7 | Laredo |
| 1976-1981 | Jeep | CJ7 | Renegade |
| 1972-1973 | Jeep | Commando | Base |
| 1984-1991 | Jeep | Grand Wagoneer | Base |
| 1984-1985 | Jeep | Grand Wagoneer | Limited |
| 1971-1973 | Jeep | J-100 | Base |
| 1970-1973 | Jeep | J-2500 | Base |
| 1970-1973 | Jeep | J-2600 | Base |
| 1970-1971 | Jeep | J-3800 | Base |
| 1971-1973 | Jeep | J-4500 | Base |
| 1971-1973 | Jeep | J-4600 | Base |
| 1971-1973 | Jeep | J-4700 | Base |
| 1971-1973 | Jeep | J-4800 | Base |
| 1974-1988 | Jeep | J10 | Base |
| 1974-1988 | Jeep | J20 | Base |
| 1972-1982 | Jeep | Wagoneer | Base |
| 1982-1983 | Jeep | Wagoneer | Brougham |
| 1973-1976 | Jeep | Wagoneer | Custom |
| 1979-1983 | Jeep | Wagoneer | Limited |
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4.4 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 4
Kids Love It
Format: Paperback
My sons both really enjoyed this book. They found the magical theme and characters very enjoyable. The graphic novel format is especially awesome. My 10 year old is dyslexic and graphic novels have been instrumental in cultivating his love of reading. He's a very visual and kinesthetic learner, and graphic novels make it so he can dive into a book and understand the story, even if he can't quite decipher all the words. With all the tutoring and reading support that challenges him, it's important to find ways to make reading enjoyable and relevant. This book is now part of our collection that helps us accomplish that! My 8 year old is not dyslexic, but he's not reading totally fluently yet, so he gets the same benefit out of graphic novels. The reasons I'm giving 4 stars instead of 5 is because I felt like the story missed some opportunities for more depth. The story arc was a little flat, and the relationship between Aster and Charlie wasn't very well developed so you just had to assume they had some sort of soul connection that explained their closeness. Also, at the end of the story the parents say the most annoying thing to the main character when he reveals his differences and saves the day, "We love you no matter what." "No matter what" is what I imagine Charles Manson's mother would say about loving him. The phrase implies that they believe there is something terribly wrong with him, but they still love him in spite of it rather than loving him because of his uniqueness and without conditions. These, of course, are things that only I as an adult picked up on. My kids still loved the book, and want to read the rest of the series. Overall, I'm super happy with this book and am grateful to have it!
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Reviewed in the United States on June 1, 2020
★★★★★ 5
Great representations
Format: Kindle
cute story and great art.
I like it just fine.
Although it does do a bit of a too heavy handed "parents never understand thing".
which is a part of the thing's theme. I get that. Still though, having a secret family of magic peeps being staunch gender conformity supporters doesn't make sense. Witches have an extensive history of cross gender stuff.
There are a few not so great magic rules that the book doesn't really answer but I can't expect it to.
It's a very short story and doesn't have time to answer my quibbles.
It's a delightful read, but it does have flaws. I'd give an average book 3 or 4 stars. but seeing as how important this sort of story is I'm giving it the full 5. It is creative enough to deserve it and the majority of the metaphors and representation are treated very well and understandable through a child's eyes.
I look forward to the prospect of reading this story to my kids.
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Reviewed in the United States on October 22, 2018
★★★★★ 5
So good
Format: Kindle
Read this for the Trans Rights Readathon, and it's so good. While it's not an explicitly "trans" narrative, it is clearly about the often restrictive and even harmful nature of enforcing gender roles. Kids know what they like, be it sports or art or magic or all of it; it's adults, like Aster's entire family and culture, who have created and clung to dividing kids between boy things and girl things.
The art is perfect for this story, and very dynamic. Every character is different and recognizable, even in different forms.
One of my favorites.
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Reviewed in the United States on March 23, 2023
★★★★★ 5
Loved this graphic novel!
Format: Kindle
I loved all the characters and I really loved reading the plot & how it all wrapped up in the end.
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Reviewed in the United States on January 11, 2025
★★★★★ 5
relatable
Format: Paperback
The first part of Witch Boy is defintely our favorite!!! My daughter loved the story of bullying inside a family and how the character found support outside. She quotes the book whenever we encounter a person who feels "different" or not as they’re supposed to be, or not following societal expectations.
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Reviewed in the United States on August 2, 2025
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