SKU: 7090406893

Comp Cams Big Mutha' ThumprT 291THR7; Cam, Lifters

$341.53 $379.48
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Description

Comp Cams Big Mutha' ThumprT 291THR7; Cam, LiftersLifter Type: Retro Fit Hydraulic Roller Engine Family: Chevrolet 305 350 c. i. V8 1987 2002 Description: Street strip Needs 9. 5: 1 compression, 2800+ stall, intake, gears & headers Very rough idle Cam Family: Thumpr" Specifications: RPM Range: 2500 to 6200 Valve Timing: 0. 006 Lobe Separation: 107 Intake Centerline: 102 Valve Lash: Hyd. Intake Hyd. Exhaust Duration: 299 Intake 319 Exhaust Duration @ . 050" Lift: 243 Intake 257 Exhaust Valve Lift: 0.

Lifter Type:Retro-Fit Hydraulic Roller

Engine Family:Chevrolet 305/350 c.i. V8 1987-2002

Description:Street/strip  Needs 9.5:1 compression, 2800+ stall, intake, gears & headers  Very rough idle

Cam Family:Thumpr"

Specifications:

  • RPM Range:2500 to 6200
  • Valve Timing:0.006
  • Lobe Separation: 107°
  • Intake Centerline:102°
  • Valve Lash:Hyd.Intake/Hyd.Exhaust
  • Duration:299 Intake/319 Exhaust
  • Duration @ .050" Lift:243 Intake/257 Exhaust
  • Valve Lift:0.533 Intake/0.519 Exhaust
  • Lobe Lift:0.355 Intake/0.346 Exhaust


Vehicle Fitments:

Year Make Model Submodel
1987 - 1991 Avanti II Base
1991 - 1996 Buick Commercial Chassis Base
1991 - 1993 Buick Roadmaster Estate Wagon
1992 - 1993 Buick Roadmaster Limited, Base
1990 - 1992 Cadillac Brougham Base, d'Elegance
1992 - 1996 Cadillac Commercial Chassis Brougham, Base
1993 Cadillac Fleetwood Base, Brougham
1994 Chevrolet Blazer Base, Silverado Sport
1992 - 1993 Chevrolet Blazer Cheyenne
1987 Chevrolet Blazer Custom Deluxe
1991 - 1994 Chevrolet Blazer Nevada
1988 - 1991 Chevrolet Blazer Scottsdale
1987 - 1994 Chevrolet Blazer Silverado
1990 - 1993 Chevrolet C1500 454 SS
1989 - 1995 Chevrolet C1500 Base
1988 - 1995 Chevrolet C1500 Cheyenne, Silverado
1988 - 1992 Chevrolet C1500 Scottsdale
1990 - 1995 Chevrolet C1500 WT
1992 - 1995 Chevrolet C1500 Suburban Base
1995 Chevrolet C1500 Suburban LT, LS
1992 - 1994 Chevrolet C1500 Suburban Silverado
1993 Chevrolet C2500 Custom, 400 SS
1988 - 1992 Chevrolet C2500 Scottsdale
1988 - 1995 Chevrolet C2500 Silverado, Cheyenne, Base
1994 - 1995 Chevrolet C2500 WT
1992 - 1995 Chevrolet C2500 Suburban Base
1995 Chevrolet C2500 Suburban LT, LS
1992 - 1994 Chevrolet C2500 Suburban Silverado
1994 - 1995 Chevrolet C3500 Base
1988 - 1992 Chevrolet C3500 Scottsdale
1988 - 1995 Chevrolet C3500 Silverado, Cheyenne
1988 Chevrolet Camaro Base
1987 - 1990 Chevrolet Camaro Iroc-Z
1989 - 1992 Chevrolet Camaro RS
1992 Chevrolet Camaro RS Heritage Edition, Z28 Heritage Edition
1987 Chevrolet Camaro Sport, LT
1987 - 1992 Chevrolet Camaro Z28
1987 - 1992 Chevrolet Caprice Base
1987 - 1993 Chevrolet Caprice Classic
1987 - 1990 Chevrolet Caprice Classic Brougham, Classic LS Brougham
1993 Chevrolet Caprice Classic LS
1991 - 1993 Chevrolet Caprice Classic LTZ
1991 - 1994 Chevrolet Commercial Chassis Base
1988 Chevrolet Corvette 35th Anniversary Edition
1987 - 1991 Chevrolet Corvette Base
1990 - 1991 Chevrolet Corvette ZR-1
1987 Chevrolet El Camino Base, SS
1996 Chevrolet Express 2500 Base, LS
1987 Chevrolet G10 Bonaventure
1987 - 1995 Chevrolet G10 Chevy Van, Beauville, Sportvan
1995 Chevrolet G20 Base
1987 - 1995 Chevrolet G20 Sportvan, Chevy Van, Beauville
1987 - 1996 Chevrolet G30 Beauville, Hi-Cube, Sportvan, Chevy Van
1994 - 1995 Chevrolet K1500 Base
1988 - 1992 Chevrolet K1500 Scottsdale
1988 - 1995 Chevrolet K1500 Silverado, Cheyenne
1991 Chevrolet K1500 Sport
1990 - 1995 Chevrolet K1500 WT
1992 - 1995 Chevrolet K1500 Suburban Base
1995 Chevrolet K1500 Suburban LT, LS
1992 - 1994 Chevrolet K1500 Suburban Silverado
1988 - 1992 Chevrolet K2500 Scottsdale
1988 - 1995 Chevrolet K2500 Silverado, Cheyenne
1994 - 1995 Chevrolet K2500 WT, Base
1992 - 1995 Chevrolet K2500 Suburban Base
1995 Chevrolet K2500 Suburban LT, LS
1992 - 1994 Chevrolet K2500 Suburban Silverado
1994 - 1995 Chevrolet K3500 Base
1988 - 1995 Chevrolet K3500 Cheyenne, Silverado
1988 - 1992 Chevrolet K3500 Scottsdale
1987 - 1988 Chevrolet Monte Carlo Base, LS, SS
1987 - 1989 Chevrolet P20 Step-Van, Base
1987 - 1998 Chevrolet P30 Base
1987 - 1990 Chevrolet P30 Step-Van
1987 Chevrolet R10 Silverado, Scottsdale, Custom Deluxe
1987 Chevrolet R10 Suburban Custom Deluxe
1987 - 1988 Chevrolet R10 Suburban Silverado, Scottsdale
1989 - 1991 Chevrolet R1500 Suburban Silverado, Scottsdale
1988 Chevrolet R20 Cheyenne
1987 - 1988 Chevrolet R20 Scottsdale, Silverado, Custom Deluxe
1987 Chevrolet R20 Suburban Custom Deluxe
1987 - 1988 Chevrolet R20 Suburban Silverado, Scottsdale
1989 - 1991 Chevrolet R2500 Suburban Scottsdale, Silverado
1988 Chevrolet R30 Cheyenne
1987 - 1988 Chevrolet R30 Scottsdale, Custom Deluxe, Silverado
1989 - 1990 Chevrolet R3500 Scottsdale
1989 - 1991 Chevrolet R3500 Silverado, Cheyenne
1995 Chevrolet Tahoe LT, LS, Base
1987 Chevrolet V10 Scottsdale, Custom Deluxe, Silverado
1987 Chevrolet V10 Suburban Custom Deluxe
1987 - 1988 Chevrolet V10 Suburban Silverado, Scottsdale
1989 - 1991 Chevrolet V1500 Suburban Scottsdale, Silverado
1987 Chevrolet V20 Custom Deluxe, Silverado, Scottsdale
1987 Chevrolet V20 Suburban Custom Deluxe
1987 - 1988 Chevrolet V20 Suburban Scottsdale, Silverado
1989 - 1991 Chevrolet V2500 Suburban Scottsdale, Silverado
1988 Chevrolet V30 Cheyenne
1987 - 1988 Chevrolet V30 Custom Deluxe, Silverado, Scottsdale
1989 - 1991 Chevrolet V3500 Cheyenne, Silverado
1989 - 1990 Chevrolet V3500 Scottsdale
1993 Excalibur Limited Base
1987 - 1989 Excalibur Phaeton Base
1994 - 1995 GMC C1500 Sierra SL, Sierra SLT, Sierra Special
1988 - 1995 GMC C1500 Sierra SLE
1988 - 1993 GMC C1500 Sierra SLX, Sierra
1992 - 1995 GMC C1500 Suburban SLE, Base
1995 GMC C1500 Suburban SLT
1988 - 1995 GMC C2500 Sierra SLE
1994 - 1995 GMC C2500 Sierra SLT, Sierra SL
1988 - 1993 GMC C2500 Sierra SLX, Sierra
1992 - 1995 GMC C2500 Suburban Base, SLE
1995 GMC C2500 Suburban SLT
1988 - 1995 GMC C3500 Sierra SLE
1994 - 1995 GMC C3500 Sierra SLT, Sierra SL
1988 - 1993 GMC C3500 Sierra SLX, Sierra
1987 GMC Caballero Diablo, Base
1987 - 1995 GMC G1500 Rally STX, Rally, Vandura
1987 - 1995 GMC G2500 Rally STX, Vandura, Rally
1987 - 1996 GMC G3500 Rally Camper Special, Vandura, Vandura Special, Magnavan, Rally STX, Rally
1987 - 1988 GMC G3500 Rally Custom
1987 - 1991 GMC Jimmy Base
1987 - 1990 GMC Jimmy Sierra Classic
1988 - 1995 GMC K1500 Sierra SLE
1995 GMC K1500 Sierra SLS
1994 - 1995 GMC K1500 Sierra SLT, Sierra Special, Sierra SL
1988 - 1993 GMC K1500 Sierra SLX, Sierra
1993 GMC K1500 Sierra Sport
1992 - 1995 GMC K1500 Suburban Base, SLE
1995 GMC K1500 Suburban SLT
1988 - 1995 GMC K2500 Sierra SLE
1994 - 1995 GMC K2500 Sierra SLT, Sierra SL
1988 - 1993 GMC K2500 Sierra SLX, Sierra
1992 - 1995 GMC K2500 Suburban Base, SLE
1995 GMC K2500 Suburban SLT
1994 - 1995 GMC K3500 Sierra SL, Sierra SLT
1988 - 1995 GMC K3500 Sierra SLE
1988 - 1993 GMC K3500 Sierra SLX, Sierra
1987 - 1989 GMC P2500 Value Van, Base
1987 - 1996 GMC P3500 Base
1987 - 1990 GMC P3500 Value Van
1987 GMC R1500 Sierra Classic, High Sierra, Base
1987 - 1991 GMC R1500 Suburban Base
1987 GMC R1500 Suburban High Sierra
1987 - 1989 GMC R1500 Suburban Sierra Classic
1990 GMC R1500 Suburban SLE
1987 - 1989 GMC R2500 Base, Sierra Classic, High Sierra
1987 - 1991 GMC R2500 Suburban Base
1987 GMC R2500 Suburban High Sierra
1987 - 1989 GMC R2500 Suburban Sierra Classic
1990 GMC R2500 Suburban SLE
1987 - 1991 GMC R3500 Base
1987 - 1989 GMC R3500 High Sierra, Sierra Classic
1990 - 1991 GMC R3500 SLE
1987 GMC V1500 Base, Sierra Classic, High Sierra
1987 - 1991 GMC V1500 Suburban Base
1987 GMC V1500 Suburban High Sierra
1987 - 1989 GMC V1500 Suburban Sierra Classic
1990 GMC V1500 Suburban SLE
1987 GMC V2500 Base, Sierra Classic, High Sierra
1987 - 1991 GMC V2500 Suburban Base
1987 GMC V2500 Suburban High Sierra
1987 - 1989 GMC V2500 Suburban Sierra Classic
1990 GMC V2500 Suburban SLE
1987 - 1991 GMC V3500 Base
1987 - 1989 GMC V3500 Sierra Classic, High Sierra
1990 - 1991 GMC V3500 SLE
1993 GMC Yukon GT
1992 - 1995 GMC Yukon SLE, Base
1995 GMC Yukon SLT
1992 - 1994 GMC Yukon Sport
1991 - 1992 Oldsmobile Custom Cruiser Base
1989 - 1992 Pontiac Firebird Formula, Trans Am GTA
1989 Pontiac Firebird Trans Am GTA SE
1987 - 1992 Pontiac Firebird Trans Am, Base
1987 Pontiac Grand Prix LE, Brougham, Base
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 7090406893

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4.7 ★★★★★
Based on 8 reviews
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Product Reviews
F
Verified Purchase
Firebabe
Port Orchard, US
★★★★★ 5
Great quality. Easy to clean. Nice appearance.
Color: Red, Size: 4.3-Quart
Solid, heavy pot for cooking and baking. I bought it mainly for making soups, stews and breads. I have only tried soups thus far. The pot cleaned up very easily. The bottom of the pot heated uniformly. Nothing was stuck to the pot when I was simmering on the glass top stove. I have not had the chance to bake yet, but seeing how evenly it held heat while cooking, I am thinking this will be perfect. I bought the red color. It gives a nice pop of color in my kitchen. This pot will probably last me a long time. I would buy one if I needed a replacement, or a gift for someone.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 29, 2025
A
Verified Purchase
Amazon Customer
Belleville, US
★★★★★ 5
Great quality for price after 3 years of use
Color: Matte Navy, Size: 6-Quart, Color: Matte Navy, Size: 6-Quart
I’m 3.5 years in and use it weekly. So far it’s been a great product especially for the price. We are really into soups, roast, and I bake bread a lot. This thing is amazing and a great quality. It’s easy to clean, does great in the oven, and stands up great to constant use. I only have a small amount of staining at the bottom, and a couple scratches from metal utensils. The lid is solid and the handle is really secure still, which is a problem I’ve had with other brands I’ve tried.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 2, 2026
G
Verified Purchase
Gwen Jones
San Leandro, US
★★★★★ 5
Quality product
Color: Navy, Size: 6-Quart
I absolutely LOVE my Dutch oven! The reduced cooking time for certain cuts of meat for stews, pot roast, etc., is a definite game changer!! The meat comes out so juicy and tender. I made curry and did the "burning" of the curry and was hesitant because I didn't want the pot to be stained. There were no stains left at all. I've used it numerous times since purchasing and it still looks new. It's very durable and the color is beautiful. If you're looking for a functional, quality, and durable Dutch oven without breaking the bank, this is it! I highly recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 9, 2026
S
Verified Purchase
Serhii
Waukegan, US
★★★★★ 5
Exactly what I wanted
Color: Blue, Size: 6-Quart
Amazing! Looks beautiful, high quality, good price. Well packaged, no defects. Heavy of course :) Blue color is amazing!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
B
Verified Purchase
Booksalottle
Louisville, US
★★★★★ 4
Nothing Exceptional but Gets the Job Done
Color: Blue, Size: 4.3-Quart, Color: Blue, Size: 4.3-Quart
I’ve owned this 4.5 Qt. Amazon Enameled Cast Iron Dutch Oven for almost two months and have used it three times to date. Upon arrival and at first glance, the gradient blue color is beautiful and super glossy; most importantly, the pot is heavy for its size - as it should be. It looks exactly like the product pictures, with a globular shape than square shape as others. Unfortunately, I also noticed that there was one pin hole and two tiny uneven protrusions on the enamel inside the pot. I own three other enameled cast iron cookware from two other brands (photos attached for size comparison) and performance wise, this cast iron by Amazon performs equally to them. The pot isn’t exceptional or special but it gets the job done. Other than the pin holes and protrusions, I have no complaints. This isn’t my first rodeo so when heating up the pot and while cooking, I have zero issues. I am starting the pan off at 4-Stars and will update my review as time progresses, or if I have any major issues with its durability or performance in subsequent months. For the amateur home cook, or for anyone who is new to cast iron cooking, below I’ve included tips that you may find useful while using this or any other enameled cast iron cookware. ================================ Regarding the 3 Photos and 1 video I've Attached: (Note: all photos were taken with an iPhone under kitchen lights during the evening. Photos have not been edited nor enhanced.) Photo 1: Size comparison of this Amazon Enameled Cast Iron Dutch Oven compared to three other enameled cast iron cookware that I own from two other brands. From left to right: 7 qt. Tramontina, 4.5 qt. Amazon, 3 qt. Lodge 4 qt. Tramontina. Photos 2 and 3: fresh produce shown next to 4.5qt Amazon Dutch Oven for color and size contrast. Video: 4.5 qt. Amazon Enameled Cast Iron Dutch Oven on gas stove over medium heat, with food cooking. ================================ TIPS THAT YOU MAY FIND USEFUL While Using your cast iron dutch oven: (Note: I included these similar tips in my review of a different enameled cast iron pot from a different brand. My tips can apply to all enameled cast iron cookware) 1. If you find that you have issues with food sticking, it could be that you are not heating up your cast iron pot properly to prevent undue hot spots. I heat my pot up gradually starting at low, then medium, then high heat. After my pot is very hot is when I add my fat/cooking oil. As the oil is heating up in the pot, I lift it and swirl the oil around to coat all sides of the pot that will come in contact with food. 2. Take into consideration the temperature of the items you are adding to your heated pot. As a general rule for cooking: when ever possible, ensure that the items you are adding to a hot pot are at room temperature, rather than ice cold from the fridge; this will assist with even cooking. 3. Also, get comfortable with adjusting your heat by lowering and raising it based on what you’ve added to the pot. In general, you will need more heat at the beginning of the cooking process, and less heat towards the end. If you cook by recipe, I highly recommend that you read all the steps ahead before starting, so that you become familiarized with all the procedures, allowing you to maneuver accordingly when you start cooking. 4. At the exception of searing meat to achieve a brown crust, deep frying, or when caramelizing onions, you should be stirring your pot (I recommend using a wooden spoon) every few minutes when cooking in cast iron that is placed over high heat. If you are braising on the stove at low heat versus braising in the oven, the frequency of your stirring will need to be adjusted. No matter how you’re cooking though, a watchful eye on the pot plus stirring, should both be a habit not an afterthought. 5. For all cooking vessels in general but especially for cast iron: after cooking, allow your pot to cool down completely before cleaning. NEVER immerse a hot cast iron pot into cold water, nor pour cold dish water into hot pot. You risk not only being scald by dangerous steam, but you also risk weakening the enamel, therefore lessening the durability of your pots over time. 6. This cookware and others like it from Tramontina and Lodge are economical and if used correctly, will perform well for most cooking; if used correctly, they should also last for years. Nonetheless, if you can afford it, authentic enameled cast iron cookware made in France by Le Creuset is the best way to go. Le Creuset is the gold standard in cast iron cookware and their quality is second to none. I definitely recommend this Amazon dutch oven but if you can afford to splurge, Le Creuset's reputation is stellar. As a professional chef, I've used them in high end kitchens and their quality and performance is premier.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 2, 2018

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