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Description
COMP Cams Camshaft CS 299Qs10 .900 BaseHydraulic Roller 4 Pattern . 900" Base Circle: Great in larger c. i. street to street strip stroker small blocks with good heads.; Outboard Specs: 301 313 Advertised Duration, 248 258 Duration . 050", . 637" . 621" Lift, 110. 5 Lobe Separation; Inboard Specs: 299 311 Advertised Duration, 246 256 Duration . 050", . 637" . 621" Lift, 109. 5 Lobe Separation; 2900 to 7200 RPM range; Recommended use with 1. 6 rocker arm ratio This Part Fits: Year Make
Hydraulic Roller - 4-Pattern .900" Base Circle: Great in larger c.i. street to street/strip stroker small blocks with good heads.; Outboard Specs: 301/313 Advertised Duration, 248/258 Duration .050", .637"/.621" Lift, 110.5 Lobe Separation; Inboard Specs: 299/311 Advertised Duration, 246/256 Duration .050", .637"/.621" Lift, 109.5 Lobe Separation; 2900 to 7200 RPM range; Recommended use with 1.6 rocker arm ratioThis Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1987-1991 | Avanti | II | Base |
| 1991-1996 | Buick | Commercial Chassis | Base |
| 1992-1993 | Buick | Roadmaster | Base |
| 1991-1993 | Buick | Roadmaster | Estate Wagon |
| 1992-1993 | Buick | Roadmaster | Limited |
| 1990-1992 | Cadillac | Brougham | Base |
| 1990-1992 | Cadillac | Brougham | d'Elegance |
| 1994-1996 | Cadillac | Commercial Chassis | Base |
| 1992-1996 | Cadillac | Commercial Chassis | Brougham |
| 1993 | Cadillac | Fleetwood | Base |
| 1993 | Cadillac | Fleetwood | Brougham |
| 1994 | Chevrolet | Blazer | Base |
| 1992-1993 | Chevrolet | Blazer | Cheyenne |
| 1987 | Chevrolet | Blazer | Custom Deluxe |
| 1988-1991 | Chevrolet | Blazer | Scottsdale |
| 1987-1994 | Chevrolet | Blazer | Silverado |
| 1994 | Chevrolet | Blazer | Silverado Sport |
| 1994-1995 | Chevrolet | C1500 | Base |
| 1988-1995 | Chevrolet | C1500 | Cheyenne |
| 1988-1992 | Chevrolet | C1500 | Scottsdale |
| 1988-1995 | Chevrolet | C1500 | Silverado |
| 1990-1995 | Chevrolet | C1500 | WT |
| 1992-1995 | Chevrolet | C1500 Suburban | Base |
| 1995 | Chevrolet | C1500 Suburban | LS |
| 1995 | Chevrolet | C1500 Suburban | LT |
| 1992-1994 | Chevrolet | C1500 Suburban | Silverado |
| 1994-1995 | Chevrolet | C2500 | Base |
| 1988-1995 | Chevrolet | C2500 | Cheyenne |
| 1988-1992 | Chevrolet | C2500 | Scottsdale |
| 1988-1995 | Chevrolet | C2500 | Silverado |
| 1994-1995 | Chevrolet | C2500 | WT |
| 1992-1995 | Chevrolet | C2500 Suburban | Base |
| 1995 | Chevrolet | C2500 Suburban | LS |
| 1995 | Chevrolet | C2500 Suburban | LT |
| 1992-1994 | Chevrolet | C2500 Suburban | Silverado |
| 1994-1995 | Chevrolet | C3500 | Base |
| 1988-1995 | Chevrolet | C3500 | Cheyenne |
| 1988-1992 | Chevrolet | C3500 | Scottsdale |
| 1988-1995 | Chevrolet | C3500 | Silverado |
| 1988 | Chevrolet | Camaro | Base |
| 1987-1990 | Chevrolet | Camaro | Iroc-Z |
| 1987 | Chevrolet | Camaro | LT |
| 1989-1992 | Chevrolet | Camaro | RS |
| 1992 | Chevrolet | Camaro | RS Heritage Edition |
| 1987 | Chevrolet | Camaro | Sport |
| 1987,1991-1992 | Chevrolet | Camaro | Z28 |
| 1992 | Chevrolet | Camaro | Z28 Heritage Edition |
| 1987-1992 | Chevrolet | Caprice | Base |
| 1987-1993 | Chevrolet | Caprice | Classic |
| 1987-1990 | Chevrolet | Caprice | Classic Brougham |
| 1993 | Chevrolet | Caprice | Classic LS |
| 1987-1990 | Chevrolet | Caprice | Classic LS Brougham |
| 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 |
| 1987 | Chevrolet | El Camino | SS |
| 1998 | Chevrolet | Express 1500 | Base |
| 1996 | Chevrolet | Express 2500 | LS |
| 1998 | Chevrolet | Express 3500 | Base |
| 1987-1995 | Chevrolet | G10 | Beauville |
| 1987 | Chevrolet | G10 | Bonaventure |
| 1987-1995 | Chevrolet | G10 | Chevy Van |
| 1987-1995 | Chevrolet | G10 | Sportvan |
| 1987-1995 | Chevrolet | G20 | Beauville |
| 1987-1995 | Chevrolet | G20 | Chevy Van |
| 1987-1995 | Chevrolet | G20 | Sportvan |
| 1987-1996 | Chevrolet | G30 | Beauville |
| 1987-1996 | Chevrolet | G30 | Chevy Van |
| 1987-1996 | Chevrolet | G30 | Hi-Cube |
| 1987-1996 | Chevrolet | G30 | Sportvan |
| 1994-1995 | Chevrolet | K1500 | Base |
| 1988-1995 | Chevrolet | K1500 | Cheyenne |
| 1988-1992 | Chevrolet | K1500 | Scottsdale |
| 1988-1995 | Chevrolet | K1500 | Silverado |
| 1991 | Chevrolet | K1500 | Sport |
| 1990-1995 | Chevrolet | K1500 | WT |
| 1992-1995 | Chevrolet | K1500 Suburban | Base |
| 1995 | Chevrolet | K1500 Suburban | LS |
| 1995 | Chevrolet | K1500 Suburban | LT |
| 1992-1994 | Chevrolet | K1500 Suburban | Silverado |
| 1994-1995 | Chevrolet | K2500 | Base |
| 1988-1995 | Chevrolet | K2500 | Cheyenne |
| 1988-1992 | Chevrolet | K2500 | Scottsdale |
| 1988-1995 | Chevrolet | K2500 | Silverado |
| 1994-1995 | Chevrolet | K2500 | WT |
| 1992-1995 | Chevrolet | K2500 Suburban | Base |
| 1995 | Chevrolet | K2500 Suburban | LS |
| 1995 | Chevrolet | K2500 Suburban | LT |
| 1992-1994 | Chevrolet | K2500 Suburban | Silverado |
| 1994-1995 | Chevrolet | K3500 | Base |
| 1988-1995 | Chevrolet | K3500 | Cheyenne |
| 1988-1992 | Chevrolet | K3500 | Scottsdale |
| 1988-1995 | Chevrolet | K3500 | Silverado |
| 1987-1988 | Chevrolet | Monte Carlo | Base |
| 1987-1988 | Chevrolet | Monte Carlo | LS |
| 1987-1988 | Chevrolet | Monte Carlo | SS |
| 1987-1989 | Chevrolet | P20 | Base |
| 1987-1989 | Chevrolet | P20 | Step-Van |
| 1987-1998 | Chevrolet | P30 | Base |
| 1987-1990 | Chevrolet | P30 | Step-Van |
| 1987 | Chevrolet | R10 | Custom Deluxe |
| 1987 | Chevrolet | R10 | Scottsdale |
| 1987 | Chevrolet | R10 | Silverado |
| 1987 | Chevrolet | R10 Suburban | Custom Deluxe |
| 1987-1988 | Chevrolet | R10 Suburban | Scottsdale |
| 1987-1988 | Chevrolet | R10 Suburban | Silverado |
| 1989-1991 | Chevrolet | R1500 Suburban | Scottsdale |
| 1989-1991 | Chevrolet | R1500 Suburban | Silverado |
| 1988 | Chevrolet | R20 | Cheyenne |
| 1987-1988 | Chevrolet | R20 | Custom Deluxe |
| 1987-1988 | Chevrolet | R20 | Scottsdale |
| 1987-1988 | Chevrolet | R20 | Silverado |
| 1987 | Chevrolet | R20 Suburban | Custom Deluxe |
| 1987-1988 | Chevrolet | R20 Suburban | Scottsdale |
| 1987-1988 | Chevrolet | R20 Suburban | Silverado |
| 1989-1991 | Chevrolet | R2500 Suburban | Scottsdale |
| 1989-1991 | Chevrolet | R2500 Suburban | Silverado |
| 1988 | Chevrolet | R30 | Cheyenne |
| 1987-1988 | Chevrolet | R30 | Custom Deluxe |
| 1987-1988 | Chevrolet | R30 | Scottsdale |
| 1987-1988 | Chevrolet | R30 | Silverado |
| 1989-1991 | Chevrolet | R3500 | Cheyenne |
| 1989-1990 | Chevrolet | R3500 | Scottsdale |
| 1989-1991 | Chevrolet | R3500 | Silverado |
| 1995 | Chevrolet | Tahoe | Base |
| 1995 | Chevrolet | Tahoe | LS |
| 1995 | Chevrolet | Tahoe | LT |
| 1987 | Chevrolet | V10 | Custom Deluxe |
| 1987 | Chevrolet | V10 | Scottsdale |
| 1987 | Chevrolet | V10 | Silverado |
| 1987 | Chevrolet | V10 Suburban | Custom Deluxe |
| 1987-1988 | Chevrolet | V10 Suburban | Scottsdale |
| 1987-1988 | Chevrolet | V10 Suburban | Silverado |
| 1989-1991 | Chevrolet | V1500 Suburban | Scottsdale |
| 1989-1991 | Chevrolet | V1500 Suburban | Silverado |
| 1987 | Chevrolet | V20 | Custom Deluxe |
| 1987 | Chevrolet | V20 | Scottsdale |
| 1987 | Chevrolet | V20 | Silverado |
| 1987 | Chevrolet | V20 Suburban | Custom Deluxe |
| 1987-1988 | Chevrolet | V20 Suburban | Scottsdale |
| 1987-1988 | Chevrolet | V20 Suburban | Silverado |
| 1989-1991 | Chevrolet | V2500 Suburban | Scottsdale |
| 1989-1991 | Chevrolet | V2500 Suburban | Silverado |
| 1988 | Chevrolet | V30 | Cheyenne |
| 1987-1988 | Chevrolet | V30 | Custom Deluxe |
| 1987-1988 | Chevrolet | V30 | Scottsdale |
| 1987-1988 | Chevrolet | V30 | Silverado |
| 1989-1991 | Chevrolet | V3500 | Cheyenne |
| 1989-1990 | Chevrolet | V3500 | Scottsdale |
| 1989-1991 | Chevrolet | V3500 | Silverado |
| 1993 | Excalibur | Limited | Base |
| 1987-1989 | Excalibur | Phaeton | Base |
| 1988-1993 | GMC | C1500 | Sierra |
| 1994-1995 | GMC | C1500 | Sierra SL |
| 1988-1995 | GMC | C1500 | Sierra SLE |
| 1994-1995 | GMC | C1500 | Sierra SLT |
| 1988-1993 | GMC | C1500 | Sierra SLX |
| 1994-1995 | GMC | C1500 | Sierra Special |
| 1992-1995 | GMC | C1500 Suburban | Base |
| 1992-1995 | GMC | C1500 Suburban | SLE |
| 1995 | GMC | C1500 Suburban | SLT |
| 1988-1993 | GMC | C2500 | Sierra |
| 1994-1995 | GMC | C2500 | Sierra SL |
| 1988-1995 | GMC | C2500 | Sierra SLE |
| 1994-1995 | GMC | C2500 | Sierra SLT |
| 1988-1993 | GMC | C2500 | Sierra SLX |
| 1992-1995 | GMC | C2500 Suburban | Base |
| 1992-1995 | GMC | C2500 Suburban | SLE |
| 1995 | GMC | C2500 Suburban | SLT |
| 1988-1993 | GMC | C3500 | Sierra |
| 1994-1995 | GMC | C3500 | Sierra SL |
| 1988-1995 | GMC | C3500 | Sierra SLE |
| 1994-1995 | GMC | C3500 | Sierra SLT |
| 1988-1993 | GMC | C3500 | Sierra SLX |
| 1987 | GMC | Caballero | Base |
| 1987 | GMC | Caballero | Diablo |
| 1987-1995 | GMC | G1500 | Rally |
| 1987-1995 | GMC | G1500 | Rally STX |
| 1987-1995 | GMC | G1500 | Vandura |
| 1987-1995 | GMC | G2500 | Rally |
| 1987-1995 | GMC | G2500 | Rally STX |
| 1987-1995 | GMC | G2500 | Vandura |
| 1987-1996 | GMC | G3500 | Magnavan |
| 1987-1996 | GMC | G3500 | Rally |
| 1987-1996 | GMC | G3500 | Rally Camper Special |
| 1987-1988 | GMC | G3500 | Rally Custom |
| 1987-1996 | GMC | G3500 | Rally STX |
| 1987-1996 | GMC | G3500 | Vandura |
| 1987-1996 | GMC | G3500 | Vandura Special |
| 1987-1991 | GMC | Jimmy | Base |
| 1987-1990 | GMC | Jimmy | Sierra Classic |
| 1988-1993 | GMC | K1500 | Sierra |
| 1994-1995 | GMC | K1500 | Sierra SL |
| 1988-1995 | GMC | K1500 | Sierra SLE |
| 1995 | GMC | K1500 | Sierra SLS |
| 1994-1995 | GMC | K1500 | Sierra SLT |
| 1988-1993 | GMC | K1500 | Sierra SLX |
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4.1 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Taste is good, reliable manufacturer
Thorne is a reputable brand that has come out with a magnesium citrate and has been certified by a third-party. I sometimes wonder about supplements online, but having a third-party certify the product gives me more peace of mind. It comes in a double protected container for further peace of mind.
This magnesium citrate comes in a powder form and mixes fairly easily with cold water. There is bicarbonate in the product, so it has a slight bubbly texture. This really tastes like citrus berry and is sweetened with monk fruit extract. I like that it has no artificial sweeteners in it.
Magnesium has been known to support muscle heart bone and the urinary tract. It can also help with constipation. My husband is a nurse and he says that they regularly administer this in the hospital when a patient has trouble with constipation.
The recommended dosage is one scoop to 6 to 8 ounces of water. There are about 60 doses in the container. If taken once a day, this will last for two months. This is a good alternative to other magnesium supplements. It is a form that is usually well absorbed by the body.
Given the reputation of the manufacturer, the ease of use, the benefits, and the ease of absorption, I can recommend this product if you are looking to increase magnesium in your diet.
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Certified quality magnesium citrate
If you like powdered supplements and planning to take magnesium citrate, then this one if for you.
I take it towards the end of the day, and in addition to the many benefits of magnesium, it actually helps me relax and sleep better, although those are not the main benefits of citrate. I guess we all react differently to supplements.
My favorite setup is when I take it in the evening and sip on it during a sauna session. In all cases, I target end of day.
The taste is very good and it mixes easily with water. Also, Thorne is a brand I trust and it's certified by various bodies. It's worth the premium but it's better to catch a deal on amazon or add it to subscribe and save for a discount if you're planning to use it long term.
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Reviewed in the United States on June 3, 2026
★★★★★ 5
Best magnesium from the best supplement brand.
Thorne can do no wrong in my book. They just can’t. I take magnesium every night. Usually magnesium glycinate. However, I read that that can start to cause night sweats over overtime. So moving decent was kind of a trial to see if that stopped the issue. It did immediately. The bonus of the powder though is that I can have it in a little bit of cherry juice or a mocktail before I go to bed. The flavor is great, and I haven’t noticed any grittiness whatsoever. That’s sad, I drink a lot of protein drinks so it’s entirely possible. I’m used to grittiness. Since starting to take this, I’ve been sleeping just as well as I have with the magnesium glycinate. Perhaps even a little bit better because this is higher quality and I’m not getting the night sweats.
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Reviewed in the United States on May 24, 2026
★★★★★ 4
Simple Magnesium Powder That Is Easy Enough to Take
I just started taking this Magnesium Citrate powder, so it is too early to know if it will help with things like muscle support, heart health, bone health. Magnesium is an important mineral for the body and it plays a role in muscle function, nerve signaling, and overall balance, so I like the idea of adding it to my routine.
The citrus berry flavor is not too horrible, which is a pleasant surprise because some magnesium powders can taste pretty rough. This one is easy enough to drink without feeling like you have to force it down. I also like that it is third party certified and comes with a full sixty servings.
I will need more time to see if it makes a noticeable difference, but so far the experience has been simple and the taste is manageable.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
2 months supply, tasty berry bubblegum flavor, no morning cramps.
I've been taking Magnesium supplements for a long time, usually in capsule form. Starting from about age 45 I kept getting these awful morning calf cramps. Especially stretching, or on cold morning. The sudden agony was unexpected and concerning. Magnesium is the answer and this water-soluble magnesium from Thorne is no exception.
For this particular problem, calf cramps. The results are noticable within a couple of days. If I stop taking magnesium for 3-5 days the cramps come back.
Thorne powder has a berry flavor that is very similar to bubble gum. It dissolves easily without leaving any lumps. Is great to help you take your other supplements. I've been taking this for about 3 weeks with no cramps. Price is a little higher than capsules typically are. This works for me and the tub should last two-months if you follow the directions.
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Reviewed in the United States on May 25, 2026