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Description
B&M Nitrous Holeshot 3500 Torque Converter, 1965-91 GM TH400, TH425 - 20484Overview: B&M Nitrous HoleShot 3500 stall for GM 1965 91 TH400, TH425, TH375 and 1968 81 TH350, TH375B (not TH350C.) The Nitrous Holeshot 3500 stall converter are an excellent choice for vehicles with many engine modifications, particularly big cams that tend to reduce low end power and torque. The higher stall speed of this converter will launch the car in a higher rpm range where more torque is readily available, resulting in quicker acceleration.
Overview:
B&M Nitrous HoleShot 3500 stall for GM 1965-91 TH400, TH425, TH375 and 1968-81 TH350, TH375B (not TH350C.) The Nitrous Holeshot 3500 stall converter are an excellent choice for vehicles with many engine modifications, particularly big cams that tend to reduce low end power and torque. The higher stall speed of this converter will launch the car in a higher rpm range where more torque is readily available, resulting in quicker acceleration. Nitrous Holeshot converters feature furnace brazed impeller and turbine, new precision steel alloy pump drive tube, new heavy duty needle bearings between the stator and impeller (not a thrust washer) and needle bearings between the stator and turbine. Other features include dual pattern 10.75 and 11.50-inch bolt circle, a new turbine hub, new springs and rollers in the stator and anti-balloon plates. The anti-balloon plates will allow these converters to stand up to the instant horsepower that a nitrous plate system delivers. Stall speed listings are based on engines producing 230lb. ft. of torque at 2,500 rpm. More torque at 2,500 rpm will give you more stall speed, less torque at 2,500 rpm will give you less stall speed than the stall speed ratings indicated. These are serious converters for serious performance street cars. To prevent contamination left from worn parts being circulated in your new components causing premature wear, we strongly recommend protecting your investment by adding a B&M transmission cooler with all new transmission installations. Listed converters are NOT to be used in trans-brake applications. Not for use in trans-brake applications.
Features:
- Needle Bearing Between Stator and Turbine
- Higher Stall Speed, Quicker Acceleration
- Anti-balloon Plate for Added Strength
- Furnace Brazed Impeller and Turbine
- Fully Balanced and Pressure Tested
- Steel Alloy Pump Drive Tube
- B&M Quality & Durability
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| 1975 | Pontiac | Grand Prix | ||
| 1977 - 1978 | Pontiac | Grand Safari | ||
| 1976 - 1977 | Pontiac | Sunbird | 140/2.3 L4 | |
| 1976 - 1977 | Oldsmobile | Starfire | 140/2.3 L4 | |
| 1975 - 1977 | Chevrolet | Monza | 140/2.3 L4 | |
| 1977 - 1978 | Pontiac | Phoenix | 151/2.5 L4 | |
| 1977 - 1980 | Pontiac | Sunbird | 151/2.5 L4 | |
| 1978 - 1980 | Oldsmobile | Starfire | 151/2.5 L4 | |
| 1977 | Pontiac | Ventura | 151/2.5 L4 | |
| 1978 - 1980 | Chevrolet | Monza | 151/2.5 L4 | |
| 1969 - 1970 | Chevrolet | Nova | 153/2.5 L4 | |
| 1965 | Chevrolet | P10 Series | 153/2.5 L4 | |
| 1966 - 1967 | Chevrolet | Chevy II | Base | 153/2.5 L4 |
| 1965 - 1967 | Chevrolet | P30 Series | 159/2.6 L3 | |
| 1969 - 1970 | Chevrolet | P30 Van | 159/2.6 L3 | |
| 1966 - 1967 | Chevrolet | P20 Series | 159/2.6 L3 | |
| 1966 | Chevrolet | P10 Series | 194/3.2 L6 | |
| 1965 | Chevrolet | Chevelle | Base | 194/3.2 L6 |
| 1965 | Chevrolet | Chevelle | Deluxe | 194/3.2 L6 |
| 1966 | Chevrolet | Chevelle | 194/3.2 L6 | |
| 1966 - 1967 | Chevrolet | Chevy II | Base | 194/3.2 L6 |
| 1965 - 1966 | Chevrolet | El Camino | 194/3.2 L6 | |
| 1978 - 1979 | Buick | Regal | 196/3.2 V6 | |
| 1978 - 1979 | Buick | Century | 196/3.2 V6 | |
| 1978 - 1979 | Chevrolet | Monza | 196/3.2 V6 | |
| 1978 - 1979 | Pontiac | LeMans | 200/3.3 V6 | |
| 1978 - 1979 | Chevrolet | El Camino | 200/3.3 V6 | |
| 1978 - 1979 | GMC | Caballero | 200/3.3 V6 | |
| 1978 - 1979 | Chevrolet | Malibu | 200/3.3 V6 | |
| 1978 - 1979 | Chevrolet | Monte Carlo | 200/3.3 V6 | |
| 1965 | Pontiac | LeMans | 215/3.5 L6 | |
| 1965 | Pontiac | Tempest | 215/3.5 L6 | |
| 1965 | Oldsmobile | F85 | 225/3.7 V6 | |
| 1965 - 1967 | Buick | Special | 225/3.7 V6 | |
| 1965 - 1967 | Buick | Skylark | 225/3.7 V6 | |
| 1980 | Pontiac | Catalina | 229/3.8 V6 | |
| 1980 | Pontiac | LeMans | 229/3.8 V6 | |
| 1980 | Pontiac | Grand LeMans | Base | 229/3.8 V6 |
| 1980 - 1981 | Chevrolet | Camaro | 229/3.8 V6 | |
| 1980 | Chevrolet | Caprice | 229/3.8 V6 | |
| 1980 | Chevrolet | El Camino | 229/3.8 V6 | |
| 1980 | Chevrolet | Impala | 229/3.8 V6 | |
| 1980 | Pontiac | Grand LeMans | Safari | 229/3.8 V6 |
| 1980 | GMC | Caballero | 229/3.8 V6 | |
| 1980 | Chevrolet | Malibu | 229/3.8 V6 | |
| 1980 | Chevrolet | Monte Carlo | 229/3.8 V6 | |
| 1969 | Chevrolet | G20 Van | 230/3.8 L6 | |
| 1965 | Chevrolet | P30 Series | 230/3.8 L6 | |
| 1969 - 1970 | Chevrolet | Nova | 230/3.8 L6 | |
| 1965 | Pontiac | Tempest | 230/3.8 L6 | |
| 1966 - 1967 | Pontiac | Tempest | Custom | 230/3.8 L6 |
| 1969 | GMC | G15/G1500 Van | 230/3.8 L6 | |
| 1967 | Pontiac | Firebird | Base | 230/3.8 L6 |
| 1967 | Pontiac | Firebird | Sprint | 230/3.8 L6 |
| 1965 | Chevrolet | Impala | 230/3.8 L6 | |
| 1965 - 1967 | Chevrolet | P10 Series | 230/3.8 L6 | |
| 1969 | Chevrolet | P10 Van | 230/3.8 L6 | |
| 1965 | Chevrolet | P20 Series | 230/3.8 L6 | |
| 1965 - 1969 | Chevrolet | El Camino | 230/3.8 L6 | |
| 1965 | Chevrolet | Chevelle | Base | 230/3.8 L6 |
| 1965 | Chevrolet | Chevelle | Deluxe | 230/3.8 L6 |
| 1966 - 1967 | Chevrolet | Chevelle | 230/3.8 L6 | |
| 1969 | Chevrolet | Camaro | RS | 230/3.8 L6 |
| 1969 | GMC | P15/P1500 Van | 230/3.8 L6 | |
| 1969 | Chevrolet | G10 Van | 230/3.8 L6 | |
| 1965 | Chevrolet | Bel Air |
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- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
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4.3 ★★★★★
Based on 1585 reviews
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Product Reviews
★★★★★ 5
Fiber with slight beauty benefits
This supplement definitely falls into the “everything including the kitchen sink” category. You’ve got 10g fiber, 30 billion CFU probiotics, inulin, ACV, plus collagen, biotin, keratin, and vitamins C and E, all in one gummy. In real use, the most noticeable effect is on digestion first, beauty second. The fiber and probiotics actually do seem to help with regularity and a less bloated feeling over time which to me is where this product feels most legitimate. The skin, hair, and nail claims are much harder to directly feel, and honestly those effects (if any) are usually subtle and slow anyway. The main issue is exactly what you’d expect from a formula this stacked. It’s trying to do a lot at once, so nothing is really at a high enough dose to feel targeted. It ends up being more of a general wellness gummy with a strong fiber base, rather than a serious collagen or hair supplement.Taste and convenience are good, and it’s easy to stay consistent with. But like many multi-benefit gummies, there’s a bit of a tradeoff between ease and actual potency. The gummies themselves do taste amazing and I love the texture. They’re also sugar free which is very appreciated. Overall, I’d say this makes the most sense if you want a digestive support gummy with some bonus beauty ingredients layered in, not if you’re looking for strong, noticeable hair or skin changes.
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Reviewed in the United States on May 18, 2026
★★★★★ 4
Berry-Flavored Fiber Gummies
These fiber gummies are a quick and convenient way to introduce more fiber into your diet, along with some additional supplements including keratin, vitamins, and probiotics. As these are gummies instead of pills, they're easier to take than trying to swallow whole capsules. The taste is a pleasant berry flavor. While the product packaging prominently displays blueberries, and blueberry flavor is included as one of the ingredients, none of the marketing actually lists these as being blueberry flavored. The price of these gummies ($17.24 with coupon at the time of review) is on par with other fiber supplements, but these have the added benefit of including additional supplements. For awareness, the advertised 10 grams of fiber is only achieved by taking 3 gummies, instead of the lower recommended amount of 2 (which only offers ~7 grams of fiber). After taking these for about a month I did not notice any significant changes or improvements to my digestive health, but effects will vary from person to person. If you're looking for a fiber supplement with some additional vitamins included, these are a good choice.
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Reviewed in the United States on May 29, 2026
★★★★★ 5
I Noticed Improved Digestive Results
I really liked these Migcopat fiber gummies. I started taking them after a gap from my last supplement and noticed a change. I felt a positive impact on my digestive results. My bowel movements were easier to pass, cleaner, and more well-formed. The pectin-based gummies were a little above average size, but they were soft and easy to chew. They did not stick to my teeth at all. They were sugar-free. They came in a clear plastic bottle. The gummies had a tasty, natural blueberry flavor. A serving size was two or three gummies, giving twenty or thirty servings per container. The formula included biotin, keratin, zinc, apple cider vinegar, and other vitamins. I was very happy with the taste, the texture, and the results. The Supplement Facts print was small on the container - it was a little larger on the box.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Great blueberry aroma, easy to chew, sugar-free formula, long expiration date
The blueberry aroma when I open the jar is wonderful, and the taste is excellent. I really like that the texture breaks down pretty easily when chewed instead of sticking to my teeth. It is great to find a sugar-free option that packs in fiber, prebiotics, and probiotics, plus a few extras like biotin and collagen. I have been taking supplements like this for years, so I do not expect to feel any drastic changes, but everything is working well for me with no ill effects. It is also nice that the expiration date is clearly printed on both the box and the bottle, giving my batch about 23 months of shelf life.
Pros
✅ Excellent blueberry taste and aroma.
✅ Soft texture breaks down easily without sticking to teeth.
✅ Sugar-free formula with a great 23-month expiration window.
✅ Includes hair and skin support ingredients like biotin and collagen.
Neutrals
– The 60-count bottle yields 20 to 30 servings depending on whether you take two or three gummies.
Cons
❌ None observed, these are very pleasant to take.
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Tasty, Easy to Take
This is the 3rd flavor of this brand that I've tried. I have to say that I preferred the grape and the little strawberry hearts better than these, as far as taste. These also are quite high in Biotin at 33,333% of the daily value, if you take the 3 gummies that equal 10g fiber. If you do want 10g of fiber the jar won't last an entire month. I don't really need the hair/nail support, so I'll probably go back to one of the other flavors. These are so easy to get out of the wide-mouth jar and they don't stick together too much. They're a soft gummy and are easy to chew. I don't tend to have an issue with them sticking to my teeth. The jar I received was manufactured in Apr 2026 and expires Apr 2028. Another reviewer mentioned that they're made in the USA, but I don't see that claim anywhere in the listing or on the product...although they're distributed by a New York company.
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Reviewed in the United States on May 13, 2026
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