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Description
Comp Cams Camshaft, A8 295T H-107 T THUMPRBig Mutha' ThumprT, 295TH7 Street Strip, Needs 9. 5: 1 Compression, Very Rough Idle Big Mutha' ThumprT : Street strip, needs 9. 5: 1 compression, 2800+ stall, intake, gears and headers, very rough idle. Specifications Lifter Type: Hydraulic Flat Tappet Engine Family: American Motors 290 401 c. i. 8 CYL. 1966 1991 Cam Family: Big Mutha' ThumprT RPM Range: 2500 to 6400 Valve Timing: . 006 Lobe Separation: 107 Intake Centerline: N A Valve Lash: Hyd.
Big Mutha' ThumprT, 295TH7
Street/Strip, Needs 9.5:1 Compression, Very Rough Idle
Big Mutha' ThumprT : Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle.
Specifications
Lifter Type: Hydraulic Flat Tappet
Engine Family: American Motors 290-401 c.i. 8 CYL. 1966-1991
Cam Family: Big Mutha' ThumprT
RPM Range: 2500 to 6400
Valve Timing: .006
Lobe Separation: 107°°
Intake Centerline: N/A°
Valve Lash: Hyd. (Intake) / Hyd. (Exhaust)
Duration: 295 (Intake) / 312 (Exhaust)
Duration @ .050" Lift: 243 (Intake) / 257 (Exhaust)
Valve Lift: .512 (Intake) / .497 (Exhaust)
Lobe Lift: .3200 (Intake) / .3110 (Exhaust)
Vehicle Fitments:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1966 - 1967 | American Motors | Ambassador | 990 |
| 1966 - 1970 | American Motors | Ambassador | Base |
| 1971 - 1974 | American Motors | Ambassador | Brougham |
| 1966 - 1971 | American Motors | Ambassador | DPL |
| 1968 - 1972 | American Motors | Ambassador | SST |
| 1966 - 1968 | American Motors | American | Base, 440 |
| 1967 - 1968 | American Motors | American | Rogue |
| 1968 - 1979 | American Motors | AMX | Base |
| 1966 | American Motors | Classic | Base, 770 |
| 1978 - 1979 | American Motors | Concord | Base |
| 1979 | American Motors | Concord | Limited, DL |
| 1972 - 1976 | American Motors | Gremlin | Base |
| 1976 | American Motors | Gremlin | Custom |
| 1977 | American Motors | Hornet | AMX |
| 1970 - 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, SST Trans Am |
| 1966 - 1967 | American Motors | Marlin | Base |
| 1971 - 1978 | American Motors | Matador | Base |
| 1974 | American Motors | Matador | Brougham, X |
| 1978 | American Motors | Pacer | Base |
| 1979 | American Motors | Pacer | Limited, DL |
| 1969 | American Motors | Rambler | Base, 440, Hurst SC/Rambler, Rogue |
| 1968 | American Motors | Rebel | 550 |
| 1967 - 1968 | American Motors | Rebel | 770 |
| 1967 - 1970 | American Motors | Rebel | SST, Base |
| 1970 | American Motors | Rebel | The Machine |
| 1966 | American Motors | Rogue | Base |
| 1979 | American Motors | Spirit | Base |
| 1974 | Bricklin | SV-1 | Base |
| 1974 | International | 100 | Travelall, Base |
| 1974 | International | 200 | Travelall, Base |
| 1974 - 1983 | Jeep | Cherokee | Base |
| 1981 - 1983 | Jeep | Cherokee | Chief |
| 1981 | Jeep | Cherokee | Laredo |
| 1983 | Jeep | Cherokee | Pioneer |
| 1974 - 1980 | Jeep | Cherokee | S |
| 1978 - 1980 | Jeep | Cherokee | Wide Track |
| 1975 - 1982 | Jeep | Cherokee | Wide Track Chief |
| 1979 - 1980 | Jeep | Cherokee | Wide Track Golden Eagle |
| 1980 - 1983 | Jeep | Cherokee | Wide Track Laredo |
| 1980 | Jeep | Cherokee | Wide Track Limited |
| 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, Renegade |
| 1977 - 1979 | Jeep | CJ7 | Golden Eagle |
| 1980 | Jeep | CJ7 | Golden Hawk |
| 1980 - 1981 | Jeep | CJ7 | Laredo |
| 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 |
| 1982 - 1984 | Jeep | J10 | Laredo |
| 1974 - 1988 | Jeep | J20 | Base |
| 1983 | Jeep | Wagoneer | Alpina |
| 1972 - 1983 | Jeep | Wagoneer | Base |
| 1982 - 1983 | Jeep | Wagoneer | Brougham |
| 1973 - 1976 | Jeep | Wagoneer | Custom |
| 1979 - 1983 | Jeep | Wagoneer | Limited |
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
4.4 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
Authentic Docs for great price!
The boots I purchased were Chelsea 2976 in Nappa leather (not the brown Crazy Horse, but the Black; such nice and soft leather!) and unisex size men's 7/women's 8/EU 39 (I'm normally a women's US 9/EU 40, but that's what fit best--see notes on sizing below).
Considering the price, I was a little skeptical that these were genuinely Dr. Marten's, so I ended up bring them into a store to verify before wearing them--and multiple salespeople, who had worked for the company for 7+ years, said they looked like the real deal to them, which is amazing for the price (I got them when they were $99 online, but $160 in store; may have been a sale...?).
Before ordering, I also visited the store to get the right sizing--Dr. Marten's doesn't sell my normal size in the US (EU 40), so I needed help figuring out what to buy. In the end that was either a women's EU 41 or a unisex 39. Dr. Marten's women's sizes are cut more narrow, so if purchasing women's, I needed a longer shoe to give my toes more space (EU 41, which they say is a women's US 9 but on many shoes EU 41 is a US 9.5 or even US 10). Unisex sizes are wider, so I was fine with a shorter length (EU 39). In the end, the only real difference between the women's sizing and men's sizing on the Chelsea boot was at the ankle; for some reason, the women's 41 had more of a gap at the ankle and I worried that might make it rub/blister more, so I went with unisex sizing. It might also depend on the boot, so I'd say go to the store for sizing before purchasing online.
Once I got them & verified their authenticity, I got a but of things to help with weatherizing them and breaking them in (Dr. Marten's has a great kit! And, double thick socks). I did get a bad blister wearing them too long & uphill on the first day (and I had to get used to their weight; I don't have many heavier shoes). But, I used Compeed patches for the blister (should have put them on to prevent, but it was fine once they were on) and after a week of wearing them a little bit at a time, they are now super comfortable and I love them! Highly recommend!
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Reviewed in the United States on February 19, 2024
★★★★★ 5
Function and style
Size: 11 Women/10 Men, Color: Black Blizzard Wp
Ideal boot for the winter, snow, mud, etc. Protect your feet beautifully, stylishly.
Tip: Wear with two socks to help break in for the first couple weeks.
If you are a half size, round up.
This is the model without laces, makes for easy slip on / slip off for those pesky people who insist on having you take off your shoes at their house! Ha ha, you know who you are.
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Reviewed in the United States on April 13, 2026
★★★★★ 4
Size up for a little bit of heel slip
Size: 9 Women/8 Men, Color: Black Nappa
It’s still a doc and the air sole with bottom out kinda quick but it’s comfortable at first. Size up for a little bit of heel slip so you don’t get heel blisters but not too big of a size jump. Think of it kind of like a cowboy boot size
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Reviewed in the United States on December 30, 2025
★★★★★ 5
Comfy, don't require "breaking in"
Size: 8 Women/7 Men, Color: Dark Brown Valor Wp
Great fit, and both my pairs of Chelsea boots required way less breaking in than other Dr. Martens I own. Hold up to frequent use and I love the fleece lining for colder days.
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Reviewed in the United States on December 29, 2025
★★★★★ 5
Excellent boots
Size: 11 Women/10 Men, Color: Black Nappa
Excellent boots
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Reviewed in the United States on May 26, 2026