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Description
B&M Holeshot 2000 Torque Converter, 1965-91 GM TH400, 1968-81 TH350 - 20416Overview: The HoleShot 2000 fits 1965 91 GM TH400, 425, 375 and 1968 81 TH350, 375B (not 350C) transmissions are for serious minded performance enthusiasts and offer additional strength and durability features not found in our Tork Master or Traveler series of converters. The Holeshot 2000 converter is an excellent choice for vehicles with some performance engine modifications, particularly big cams that tend to reduce low end power and torque. The
Overview:
The HoleShot 2000 fits 1965-91 GM TH400, 425, 375 and 1968-81 TH350, 375B (not 350C) transmissions are for serious-minded performance enthusiasts and offer additional strength and durability features not found in our Tork Master or Traveler series of converters. The Holeshot 2000 converter is an excellent choice for vehicles with some performance 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. Holeshot converters feature furnace brazed impeller fins and turbine, new precision alloy impeller hub and new heavy duty needle bearings. Other features include fully balanced and pressure tested by expert technicians. If your vehicle is equipped with a plate type nitrous system or supercharger, please refer to the Nitrous Holeshot line of converters. Notes: 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. Higher stall converters can generate more heat, so we highly recommend adding a transmission cooler. This converter is Not recommended for supercharged, plate-type nitrous oxide or trans-brake applications. The product images shown are for illustration purposes only and may not be an exact representation of the product. 10.75-inch bolt circle
Features:
- Precision Balanced on Certified Balance Equipment
- Copper Furnace Brazed Impeller and Turbine
- New Precision Alloy Steel Impeller Hub
- Race Proven Technology & Quality
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| 1977 - 1978 | Pontiac | Grand Safari | ||
| 1975 - 1976 | Chevrolet | Vega | 122/2 L4 | |
| 1976 - 1977 | Pontiac | Sunbird | 140/2.3 L4 | |
| 1974 - 1977 | Chevrolet | Vega | 140/2.3 L4 | |
| 1975 - 1977 | Pontiac | Astre | 140/2.3 L4 | |
| 1971 - 1973 | Chevrolet | Vega | Base | 140/2.3 L4 |
| 1975 - 1977 | Chevrolet | Monza | 140/2.3 L4 | |
| 1976 - 1977 | Oldsmobile | Starfire | 140/2.3 L4 | |
| 1977 - 1978 | Pontiac | Phoenix | 151/2.5 L4 | |
| 1977 - 1980 | Pontiac | Sunbird | 151/2.5 L4 | |
| 1978 - 1980 | Chevrolet | Monza | 151/2.5 L4 | |
| 1977 | Pontiac | Ventura | 151/2.5 L4 | |
| 1978 - 1980 | Oldsmobile | Starfire | 151/2.5 L4 | |
| 1977 | Pontiac | Astre | 151/2.5 L4 | |
| 1969 - 1970 | Chevrolet | Nova | 153/2.5 L4 | |
| 1966 - 1967 | Chevrolet | Chevy II | Base | 153/2.5 L4 |
| 1965 | Chevrolet | P10 Series | 153/2.5 L4 | |
| 1966 - 1967 | Chevrolet | P20 Series | 159/2.6 L3 | |
| 1965 - 1967 | Chevrolet | P30 Series | 159/2.6 L3 | |
| 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 | |
| 1966 | Chevrolet | P10 Series | 194/3.2 L6 | |
| 1978 - 1979 | Chevrolet | Monza | 196/3.2 V6 | |
| 1978 - 1979 | Buick | Century | 196/3.2 V6 | |
| 1978 - 1979 | Buick | Regal | 196/3.2 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 | |
| 1978 - 1979 | Chevrolet | El Camino | 200/3.3 V6 | |
| 1965 | Pontiac | Tempest | 215/3.5 L6 | |
| 1965 | Pontiac | LeMans | 215/3.5 L6 | |
| 1965 - 1967 | Buick | Skylark | 225/3.7 V6 | |
| 1965 - 1967 | Buick | Special | 225/3.7 V6 | |
| 1965 | Oldsmobile | F85 | 225/3.7 V6 | |
| 1980 | GMC | Caballero | 229/3.8 V6 | |
| 1980 | Pontiac | LeMans | 229/3.8 V6 | |
| 1980 | Chevrolet | Malibu | 229/3.8 V6 | |
| 1980 | Chevrolet | Monte Carlo | 229/3.8 V6 | |
| 1980 | Chevrolet | El Camino | 229/3.8 V6 | |
| 1980 | Chevrolet | Impala | 229/3.8 V6 | |
| 1980 | Pontiac | Catalina | 229/3.8 V6 | |
| 1980 - 1982 | Checker | Marathon | 229/3.8 V6 | |
| 1980 | Pontiac | Grand LeMans | Base | 229/3.8 V6 |
| 1980 | Pontiac | Grand LeMans | Safari | 229/3.8 V6 |
| 1980 - 1981 | Chevrolet | Camaro | 229/3.8 V6 | |
| 1980 | Chevrolet | Caprice | 229/3.8 V6 | |
| 1969 | GMC | G15/G1500 Van | 230/3.8 L6 | |
| 1967 - 1969 | GMC | K15/K1500 Pickup | 230/3.8 L6 | |
| 1969 | Chevrolet | G10 Van | 230/3.8 L6 | |
| 1969 | Chevrolet | G20 Van | 230/3.8 L6 | |
| 1967 - 1968 | Chevrolet | Camaro | 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 | |
| 1965 | Chevrolet | Biscayne | 230/3.8 L6 | |
| 1968 - 1969 | GMC | C15/C1500 Pickup | 230/3.8 L6 | |
| 1969 - 1970 | Chevrolet | Nova | 230/3.8 L6 | |
| 1965 | Pontiac | Tempest | 230/3.8 L6 | |
| 1966 | Chevrolet | Chevy II | Base | 230/3.8 L6 |
| 1966 | Chevrolet | C10 Pickup | 230/3.8 L6 | |
| 1965 - 1969 | Chevrolet | El Camino | 230/3.8 L6 | |
| 1965 - 1967 | Chevrolet | P10 Series | 230/3.8 L6 | |
| 1969 | GMC | G25/G2500 Van | 230/3.8 L6 | |
| 1965 | Chevrolet | Bel Air | 230/3.8 L6 | |
| 1965 | Chevrolet |
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- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.4 ★★★★★
Based on 1344 reviews
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Product Reviews
★★★★★ 5
Great fit!
Size: Large, Color: Beige
Most comfy undies THANK YOU!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
★★★★★ 5
Love the "B00" Colors, but the "RX" colors are a totally different boyshort!!!!
Size: 3X-Large, Color: B004
The packs that have a color name starting with "B00" are fantastic! I bought the black and grey ones, and a set of the multi-colored ones, and they are the best boyshorts, ever!!! I attest to this now, after 6 months of everyday wear and wash.
This first part of this review is only for boyshorts that have a color name starting with "B00"! Read the end for my review of the ones with a color that starts with "RX". Completely different panty.
The B00 colors are sewn impeccably well, and they are a beautiful, quality material that resembles very thick, very soft leg stockings (panty hose). They stretch easily in every direction, so they hug your curves perfectly. These are not cotton! I hate cotton undies. These are nylon, or something synthetically similar.
Unlike stockings, I think it would be very difficult to put a snag in the material because of how much thicker the material is than stockings. I actually tried to snag them with my torn finger nail just to see, but the material is very strong, so I could not put a run in them.
Even though these are thick and soft, they dry remarkably fast, because of the looser weave of the synthetic material. They do not roll at all at the waist or on the legs, and I am a very curvy girl, so if they were going to roll, they would definitely roll on me.
They wash very well. I've machine-washed them all weekly for 6 months now, and also tumble dried them on the low setting, at a laundromat. No issues at all with fading, color-bleed. shrinking, ravels, and no pilling. These are definitely my everyday undies.
One really nice feature is that since these are tagless, they sewed a few raised lines of soft stitching in the back, so you'd always know where your rear-end goes.
One thing some people may not like, is that there is no separate liner on the crotch. It is pretty much the same material as the rest of the panty, but a bit thicker, with an extra light layer of lighter-colored stitching incorporated into the inside of the fabric, to make it a bit more absorbent. I actually prefer this, because it means they dry faster, and they are less likely to fall apart in the gusset, but some people may prefer the extra liner of fabric that is typical for most undies.
These are not binding at all, so not a shaper panty by any means, but they are certainly very comfortable and stay where you put them.
I would think these would be fantastic for backpacking (I love backpacking!) for all the features I mentioned. I have micromodal boy shorts by meundies that I used to wear for hiking, but I will definitely wear these instead because of the reduced drying time after washing, or when sweating. The other micromodal bamboo/cotton-like materials just hold too much moisture for hiking. Undies that retain moisture can cause painful chafing, and can even contribute to hypothermia.
I love these! I am buying more!!
REVIEW UPDATE!
Well, I did buy more. I bought the 5-pack of color that starts with "RX", and I was super disappointed! The "RX" ones are NOTHING like the "R00" ones I described above. Look closely at the pictures. Those ones with a different fabric panel on the hip are tight, not nearly as stretchy, roll instantly on my inner thighs, dip in the back, are not nearly as soft, and do not dry quickly. They are a completely different boyshort, and I do not like "RX" model of boyshort at all. I suppose if you had no meat on your thighs and you wanted a shaper-type panty, the "RX" might be exactly what you're looking for, but not for me, for sure.
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Reviewed in the United States on June 8, 2024
★★★★★ 5
Soft and comfortable
Size: Medium, Color: B005
Cute I must have a huge ass cuz they fit like short short underwear they do not cover my thighs like in the Pic and I got a medium I weight 145 and am 5'4" i can fit between and small and medium but I went a size up to a medium and they fit smaller then expected ill keep them cuz there stretchy and not tight but definitely fit short. Over all soft and comfortable material.
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Reviewed in the United States on February 5, 2026
★★★★★ 5
Full Coverage
Size: Large, Color: B2207sp
They're nice and light, super stretchy, and not too tight around the edges. Im a size 14 and got a large amd They're a smidge tight, but I think if I would get an xl theyd fit perfectly, They're still comfy as is. One stipulation I had is I wanted them to cover my whole butt cheeks, nothing cutsie short cut, not for this. They cover my entire booty cheeks and stay there pretty well. Oh and also no camel toe! Id buy them again and would recommend them to anyone.
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Reviewed in the United States on December 15, 2025
★★★★★ 4
Make sure you size up!!
Size: 4X-Large, Color: B004
Allllllmost 5 stars if the sizing was correct. I’ve been on the hunt for a decent fitting pair of women’s boxer briefs. I would say these are more so boyshorts. That being said, I wanted something loose for sleeping in so I got TWO sizes up. I normally go for a 2x and got a 4x and they’re perfect fitting. So, you didn’t get what I was looking for but did end up with some decent fitting undies. So I can’t complain too much. Just not the boxer briefs I was hoping for. Super stretchy and soft. Comfortable for sleeping in.
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Reviewed in the United States on March 3, 2026