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Description
B&M Transpak - GM TH350 Transmissions - 30228Overview: The B&M Transpak is the next step up from the B&M Shift Improver kit. It has all the features in the Shift Improver kit, plus it provides additional driver manual control (GM TH 400, 350, Ford C 6 and Chrysler Torqueflite only). B&M Transpak kit for 1968 1981 GM TH350 automatic transmissions. Most stock automatic transmissions won't downshift into low gear above 15 mph, and automatically upshift at a predetermined speed no matter what gear
Overview:
The B&M® Transpak is the next step up from the B&M Shift Improver kit. It has all the features in the Shift Improver kit, plus it provides additional driver manual control (GM TH-400, 350, Ford C-6 and Chrysler Torqueflite only). B&M® Transpak™ kit for 1968-1981 GM TH350 automatic transmissions. Most stock automatic transmissions won't downshift into low gear above 15 mph, and automatically upshift at a predetermined speed no matter what gear you're in. With the Transpak, you can downshift at any speed, and you can hold the transmission in first gear to any speed that you want! This is an asset when you've got a modified engine, and you want additional RPMs, or you're towing a trailer or driving heavy loads downhill. Stage 1. Heavy Duty is for street rods, normal passenger vehicles or other heavy duty use. Firmer shift feel but not harsh. Improves transmission performance and life dramatically without loss of comfort and offers normal automatic operation when in Drive. Stage 2 is for Hi-Performance street use. Essentially the same as Heavy Duty mode except shifts are much quicker. Retains full automatic features and standard shift points with selector in Drive. Notes: Does Not Fit GM TH350C transmissions.
Features:
- Recalibrate's GM TH350 Automatic Transmissions
- Full Manual Control on Most Transmissions
- Over 65 Years of B&M Quality
- Improves Transmission Life
- Optimum Performance
- Firmer shifts
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| 1969 - 1980 | Chevrolet | Impala | ||
| 1975 - 1981 | Chevrolet | K10 | ||
| 1969 - 1981 | Chevrolet | K10 Suburban | ||
| 1975 - 1980 | Chevrolet | K20 | ||
| 1969 - 1981 | Chevrolet | K20 Suburban | ||
| 1977 - 1981 | Chevrolet | K30 | ||
| 1975 - 1976 | Chevrolet | Laguna | ||
| 1975 - 1980 | Chevrolet | Malibu | ||
| 1970 - 1980 | Chevrolet | Monte Carlo | ||
| 1975 - 1980 | Chevrolet | Monza | ||
| 1970 - 1975 | Oldsmobile | Vista Cruiser | ||
| 1972 - 1980 | Pontiac | Catalina | ||
| 1969 - 1981 | Pontiac | Firebird | ||
| 1973 - 1980 | Pontiac | Grand Am | ||
| 1968 - 1980 | Pontiac | LeMans | ||
| 1971 - 1977 | Pontiac | Ventura | ||
| 1975 - 1978 | Pontiac | Grand Safari | ||
| 1970 - 1974 | Chevrolet | G30 Van | ||
| 1968 - 1972 | Buick | Sportwagon | ||
| 1968 - 1970 | Pontiac | Tempest | Base | |
| 1968 | Pontiac | Tempest | Safari | |
| 1969 | Buick | Special | ||
| 1969 | Pontiac | Tempest | ||
| 1970 - 1974 | GMC | G35/G3500 Van | ||
| 1975 - 1981 | Chevrolet | P20 | ||
| 1975 - 1981 | Chevrolet | P30 | ||
| 1974 - 1977 | Chevrolet | Vega | ||
| 1975 - 1978 | GMC | C15 | ||
| 1979 - 1981 | GMC | C1500 | ||
| 1975 - 1978 | GMC | C15 Suburban | ||
| 1979 - 1981 | GMC | C1500 Suburban | ||
| 1975 - 1978 | GMC | C25 | ||
| 1979 - 1981 | GMC | C2500 | ||
| 1975 - 1978 | GMC | C25 Suburban | ||
| 1979 - 1981 | GMC | C2500 Suburban | ||
| 1975 - 1978 | GMC | C35 | ||
| 1979 - 1981 | GMC | C3500 | ||
| 1978 - 1980 | GMC | Caballero | ||
| 1975 - 1978 | GMC | G15 | ||
| 1979 - 1981 | GMC | G1500 | ||
| 1975 - 1978 | GMC | G25 | ||
| 1979 - 1981 | GMC | G2500 | ||
| 1975 - 1978 | GMC | G35 | ||
| 1979 - 1980 | GMC | G3500 | ||
| 1981 | GMC | G3500 | Rally | |
| 1981 | GMC | G3500 | Rally STX | |
| 1981 | GMC | G3500 | Vandura | |
| 1975 | Pontiac | Firebird | Formula | |
| 1975 | Pontiac | Firebird | Trans Am | |
| 1975 | Pontiac | Grand LeMans | ||
| 1976 - 1980 | Pontiac | Grand LeMans | Base | |
| 1977 - 1980 | Pontiac | Grand LeMans | Safari | |
| 1976 - 1980 | Pontiac | Grand Prix | ||
| 1976 - 1977 | Pontiac | LeMans | Base | |
| 1976 - 1977 | Pontiac | LeMans | Sport | |
| 1977 | Pontiac | LeMans | Safari | |
| 1969 - 1974 | Chevrolet | C10 Pickup | ||
| 1969 - 1981 | Chevrolet | C10 Suburban | ||
| 1969 - 1974 | Chevrolet | C20 Pickup | ||
| 1969 - 1981 | Chevrolet | C20 Suburban | ||
| 1977 - 1979 | Pontiac | Phoenix | ||
| 1976 - 1980 | Pontiac | Sunbird | ||
| 1973 - 1980 | Oldsmobile | Custom Cruiser | ||
| 1973 - 1975 | Buick | Apollo | ||
| 1971 - 1973 | Buick | Centurion | ||
| 1973 - 1981 | Buick | Century | ||
| 1971 - 1980 | Buick | Estate Wagon | ||
| 1970 - 1972 | Buick | GS | ||
| 1970 - 1980 | Buick | LeSabre | ||
| 1974 | Buick | LeSabre | Base | |
| 1973 - 1981 | Buick | Regal | ||
| 1969 | Buick | Skylark | Base | |
| 1970 - 1979 | Buick | Skylark | ||
| 1970 - 1975 | Chevrolet | Bel Air | ||
| 1970 - 1972 | Chevrolet | Biscayne | ||
| 1969 - 1974 | Chevrolet | Blazer | ||
| 1972 | Chevrolet | Brookwood | ||
| 1975 - 1981 | Chevrolet | C30 | ||
| 1969 - 1981 | Chevrolet | Camaro | ||
| 1970 - 1980 | Chevrolet | Caprice | ||
| 1975 - 1980 | Chevrolet | Corvette | ||
| 1969 - 1980 | Chevrolet | El Camino | ||
| 1975 - 1981 | Chevrolet | G10 | ||
| 1975 - 1981 | Chevrolet | G20 | ||
| 1975 - 1981 | Chevrolet | G30 | ||
| 1979 - 1981 | GMC | K1500 Suburban | ||
| 1975 - 1978 | GMC | K25 | ||
| 1979 - 1981 | GMC | K2500 | ||
| 1969 - 1974 | Chevrolet | C30 Pickup | ||
| 1973 | Chevrolet | Camaro | Base | |
| 1973 | Chevrolet | Camaro | RS | |
| 1973 | Chevrolet | Camaro | LT | |
| 1973 | Chevrolet | Camaro | Z28 | |
| 1970 - 1972 | Chevrolet | Chevelle | Base | |
| 1971 | Chevrolet | Chevelle | ||
| 1972 | Chevrolet | Chevelle | SS | |
| 1972 | Chevrolet | Chevelle | Malibu | |
| 1969 - 1974 | Chevrolet | G10 Van | ||
| 1969 - 1974 | Chevrolet | G20 Van | ||
| 1968 - 1974 | Chevrolet | K10 Pickup | ||
| 1969 - 1974 | Chevrolet | K20 Pickup | ||
| 1969 - 1974 | Chevrolet | K30 Pickup | ||
| 1975 - 1980 | Buick | Skyhawk | ||
| 1980 | Cadillac | DeVille | ||
| 1980 | Cadillac | Fleetwood | Brougham | |
| 1980 | Cadillac | Fleetwood | Brougham d'Elegance | |
| 1975 - 1981 | Chevrolet | K5 Blazer | ||
| 1975 - 1981 | Chevrolet | C10 | ||
| 1975 - 1981 | Chevrolet | C20 | ||
| 1975 | Buick | Century | Base | |
| 1975 | Buick | Century | Custom | |
| 1975 | Buick | Century | Luxus | |
| 1975 | Buick | Century | Special | |
| 1975 - 1980 | Buick | Electra | ||
| 1975 - 1978 | Buick | Riviera | ||
| 1975 - 1978 | GMC | K25 Suburban | ||
| 1979 - 1981 | GMC | K2500 Suburban | ||
| 1977 - 1978 | GMC | K35 | ||
| 1979 - 1981 | GMC | K3500 | ||
| 1975 - 1978 | GMC | P15 | ||
| 1979 - 1980 | GMC | P1500 | ||
| 1975 - 1978 | GMC | P25 | ||
| 1979 - 1981 | GMC | P2500 | ||
| 1975 - 1978 | GMC | P35 | ||
| 1979 - 1981 | GMC | P3500 | ||
| 1971 - 1977 | GMC | Sprint | ||
| 1972 - 1980 | Oldsmobile | 98 | ||
| 1968 - 1980 | Oldsmobile | Cutlass | ||
| 1981 | Oldsmobile | Cutlass | LS | |
| 1975 - 1980 | Oldsmobile | Cutlass Salon | ||
| 1976 | Oldsmobile | Cutlass Tiara | ||
| 1978 - 1980 | Oldsmobile | Cutlass Calais | ||
| 1980 | Oldsmobile | Cutlass Cruiser | ||
| 1975 - 1980 | Oldsmobile | Cutlass Supreme | ||
| 1970 - 1980 | Oldsmobile | Delta 88 | ||
| 1973 - 1979 | Oldsmobile | Omega | ||
| 1975 - 1980 | Oldsmobile | Starfire | ||
| 1975 - 1977 | Pontiac | Astre | ||
| 1976 - 1980 | Pontiac | Bonneville | ||
| 1975 | Pontiac | Firebird | Base | |
| 1975 | Pontiac | Firebird | Esprit | |
| 1969 - 1974 | GMC | C15/C1500 Pickup | ||
| 1969 - 1974 | GMC | C15/C1500 Suburban | ||
| 1968 - 1974 | GMC | C25/C2500 Pickup | ||
| 1968 - 1974 | GMC | C25/C2500 Suburban | ||
| 1969 - 1974 | GMC | C35/C3500 Pickup | ||
| 1969 - 1974 | GMC | G15/G1500 Van | ||
| 1969 - 1974 | GMC | G25/G2500 Van | ||
| 1970 - 1981 | GMC | Jimmy | ||
| 1969 - 1974 | GMC | K15/K1500 Pickup | ||
| 1969 - 1974 | GMC | K15/K1500 Suburban | ||
| 1969 - 1974 | GMC | K25/K2500 Pickup | ||
| 1969 - 1974 | GMC | K25/K2500 Suburban | ||
| 1969 - 1974 | GMC | K35/K3500 Pickup | ||
| 1973 | GMC | P15/P1500 Van | ||
| 1973 | GMC | P25/P2500 Van | ||
| 1973 | GMC | P35/P3500 Van | ||
| 1968 - 1970 | Oldsmobile | 442 | ||
| 1968 - 1972 | Oldsmobile | F85 | ||
| 1969 - 1971 | Chevrolet | Kingswood | Base | |
| 1971 | Chevrolet | Kingswood | Estate | |
| 1972 | Chevrolet | Kingswood | ||
| 1973 - 1974 | Chevrolet | Malibu | Base | |
| 1970 - 1978 | Chevrolet | Nova | ||
| 1969 - 1972 | Chevrolet | Townsman | ||
| 1971 - 1973 | Chevrolet | Vega | Base | |
| 1981 | GMC | G3500 | Rally Custom | |
| 1981 | GMC | G3500 | Magnavan | |
| 1981 | GMC | G3500 | Rally Camper Special | |
| 1981 | GMC | G3500 | Vandura Special | |
| 1975 - 1978 | GMC | K15 | ||
| 1979 - 1981 | GMC | K1500 | ||
| 1975 - 1978 | GMC | K15 Suburban | ||
| 1975 - 1980 | Chevrolet | P10 |
Specs:
| Automotive Item Grade | High Performance |
|---|---|
| Brand | B&M |
| California Proposition 65 Chemical Name | Cadmium and cadmium compounds |
| California Proposition 65 Required | Yes |
| Emission Code | 5 |
| Gasket Included | Yes |
| Instructions Included | Yes |
| Manual Control | Partial |
| Product Type | Automatic Transmission Valve Body Kit |
| Warning | California Proposition 65 |
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
4.1 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 4
Great, soft, high-quality pillows, but too thick for me
Size: Standard (Pack of 2), Style: Soft, Configuration: Pillow
This will be a brief review of my pillow journey. I tried a few of the most popular pillows, like MyPillow, Amazon Basics, bamboo/shredded foam, memory pillows, but my most common complaint about them were that they were all just too high and firm for me. I am a restless sleeper and alternate between back, side, and stomach sleeping, and I strongly preferred the stomach sleeper/flat pillows with a polyester fiber/down alternative filling.
Here's a ranking of my 4 top pillows:
Eversnug Adjustable Layer Pillows - (#1)
These were THE pillow for me. I had never heard of these pillows or the company, but I really like being able to adjust my pillow. These pillows came with 2 small, 2 medium, and 2 large pillows and 2 twin zippable pillow pouches. All of them were polyester fiber filled and somewhat flat and soft, but not lumpy. The pillows may not come the exact same sizes, but they are close enough for me. These are the pillows I ultimately decided to stick with, despite being slightly more expensive than the others at $50 for a set of 2 pillows.
Nappler Bamboo Shredded Memory Foam Pillow - (#2)
Before I found the Eversnug pillows, I was trying the adjustable bamboo shredded memory foam ones. These were my go-to whenever I was testing pillows I didn't like very much. The only downside to these pillows is that if you don't add enough filling, you could feel the edges of the shredded foam. Also, the "bamboo" cover was way too warm and the inner zipper would get too easily caught.
Amazon Basics Down Alternative Pillow - (#3)
I don't think I've ever been disappointed by an Amazon Basics product yet. These pillows were soft, amazing pillows, but they were 1-2 inches too thick/firm for me.
MyPillow - (#4)
Despite all the hype around these, they were too lumpy and 1 inch too thick for me.
Like I said previously, I ended up going with the Eversnug Adjustable pillows, which I absolutely adore. A tiny bonus is that you can take the pillows you don't use and rest them on your sides or between your knees for some extra cushioning.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 12, 2023
★★★★★ 5
Good price and pretty comfortable
Size: Standard (Pack of 2), Style: Soft, Configuration: Pillow
These down alternative pillows are incredibly soft and comfortable, especially for stomach and back sleepers. The soft density gives just the right amount of support without feeling too firm or too flat. I’ve been sleeping much better since switching to these pillows, and they stay fluffy throughout the night.
I also love that they’re hypoallergenic, so there’s no irritation or overheating while sleeping. The standard size fits perfectly in my pillowcases, and the white color looks clean and fresh. Getting a 2-pack at this quality is a great value. Highly recommend for anyone looking for cozy, hotel-style pillows at an affordable price!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
★★★★★ 5
Comfortable Pillows
Size: Standard (Pack of 2), Style: Soft, Configuration: Pillow
These pillows have a nice soft feel and are so comfortable. They’re supportive without being too firm, so my neck feels comfortable throughout the night. They’re lightweight, fluffy, and easy to adjust for different sleeping positions. The material feels smooth and well-made, and the pillows hold their shape better than I expected for the price. They use some alternative fill instead of real feathers which is good for people with allergies.
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Reviewed in the United States on March 30, 2026
★★★★★ 3
Mid range quality
Size: Standard (Pack of 2), Style: Soft, Configuration: Pillow
They work for kids who aren’t picky. Size fit twin bedding well. Look nice and clean. Quality is mediocre. It wasn’t filled very much even after giving time for it to breathe and fluff. Kind of lumpy and lopsided.
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Reviewed in the United States on February 28, 2026
★★★★★ 5
Great pillows!
Size: Standard (Pack of 2), Style: Soft, Configuration: Pillow
I bought these to exchange some old pillows on my son's bed and let me tell you.. they are so soft he fell asleep almost instantly! They keep him nice and cool during the night, they have kept their shape so far and they support your neck perfectly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026