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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
4.8 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Will not be disappointed
Color: Black/Blue
Keeping in mind that I received this item yesterday (2/24/16), I absolutely love this watch. The reason I have so much confidence with this watch is because I've owned one other Timex similar to this one, and it served me extremely well and is still able to do so. First off, this watch is certainly aesthetically pleasing. The blue color around the face of the watch and outline in the band, goes really well with the black frame. It's just an overall nice looking watch. More importantly, the quality seems great. As I mentioned, I've owned a Timex expedition, which I've had for more than 2 years, and it's still working perfectly fine. The watch seems like it's put together very well and there's no loose or flimsy parts. One complaint that many people seem to have with Timex is the quality of their band. Unfortunately I'd have to agree, since the band on my other Timex that's still working like the first day I got it, cracked and broke and is only being held together by the nylon fabric on the other side of the band. You're not going to have that problem with this watch. It's a full nylon band with Velcro adjustment, for precise fitting. it feels extremely comfortable and you won't need to worry about the band cracking (although I'm sure there will be certain defects in a mass produced bunch). I will use this watch for work and running, and rarely plan on taking it off. Just to give you an idea, I also have a garmin gps watch that I love and obviously has more functions than this watch. However, the second I received this watch, I slapped it on and put my garmin to the side. This watch also looks amazing when you wear it. I'll update this feedback as needed, but I'm confident this watch will serve me for years to come, just as my other one has.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 25, 2016
★★★★★ 5
Greatest watch I've ever had, but changing batteries is near impossible
Color: Black/Blue
This is the 3rd time I've bought this watch. Same brand, same or very similar model. It has a chronometer, timer, alarm, and of course the clock. It has something I think is for "occasions" but I don't know what it does and don't really care about it. The watch is durable. It uses battery power efficiently. The indiglo is second to none. I just really really like this watch.
Having said all that, if you want to change the batteries, good luck, you'll need it. Once you manage to get the backing off of it and open it up (which is a little tricky in itself), it's like a comedy routine where you see some stooge open an electrical device and a buncha parts and springs go flying everywhere. And of course, they are so tiny, you'll never find them once they fly out. That was the exact scenario I found myself in the last time I tried to change the battery. It made me so mad I actually bought another brand of watch that I thoroughly researched. But that watch DIDN'T use battery power efficiently, and it had a host of other minor problems that added up to the conclusion that it was not nearly as great as this Timex. So, for the 3rd time, I found myself buying this Timex watch.
So it's a wonderful watch in every way except longevity because changing the batteries has historically been a nightmare for me.
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Reviewed in the United States on December 4, 2019
★★★★★ 5
A better Ironman design
Color: Black/Blue
I've been a fan of Timex watches for most of my life, paying about $30 for one in the 1960s, and that hasn't changed at all in 2010 because I'm still paying about $30 for my Timex watches. It is a rare case indeed when the quality of a product continually improves over several decades while the price remains the same. And as John Cameron Swayze would say in those live ads during the early years of TV, "Timex takes a lickin and keeps on tickin".
The MEGA deserves a good review after I have been using it for a while. You might also see it advertized as the "Oversize" because most distinctive about this design is its size, so tagging it with the name MEGA is entirely justified. It is massive in comparison to most of the other Ironman series of watches, and what seemed at first to be just another unnecessary Ironman 30 Lap design has turned out to be one of my favorites for all-around wearing. This new design keeps the clockworks of the standard size 30 Lap Ironman watches, it counts up and down, programs the same, has several alarms, and of course, it has the Indigo night light that works so well.
This is one of five different versions of the Mega available in the USA, and the only one with a Fastwrap Velcro wristband with blue striping and a matching blue bezel. Velcro wristbands are a favorite among many athletes and when it wears out, it can be replaced with either an identical factory band or one that is made of urethane rubber.
Overall, the Mega is a good choice for runners in need of a new 30 lap Ironman who can appreciate having a watch that is distinctively larger and what I would consider to be much better in appearances over the others of standard or mid size Ironman dimensions.
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Reviewed in the United States on November 17, 2010
★★★★★ 5
Love it
Color: Black/Blue
Have worn these watches for years.they are durable they can get wet take a beating but they keep on ticking. I’m just not a fan of watches you have to charge all the time
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Reviewed in the United States on May 11, 2026
★★★★★ 5
Mwears it daily for 2 years now and loves it. That is why I chose this brand
Color: 2858-All Black-Black Gold
This is a very attractive men’s watch! Appears to be good quality! The appearance is much better than I expected for the price. It is in good working condition. Will see how long it will last. So far my husband likes it a lot. It was a BD gift for him,
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Reviewed in the United States on December 14, 2025
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