SKU: 8107171698

B&M Transpak - GM TH350C (Lockup) - 30235

Sale price$167.35 Regular price$185.95
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Description

B&M Transpak - GM TH350C (Lockup) - 30235Overview: 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 1980 1986 GM TH350C (Lockup) automatic transmissions. Most stock automatic transmissions won't downshift into low gear above 15 mph, and automatically upshift at a predetermined speed no matter

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 1980-1986 GM TH350C (Lockup) 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 1968-1980 GM TH350 (non-Lock-up) transmissions.

Features:

  • Recalibrate's GM TH350C Automatic Transmissions
  • Full Manual Control on Most Transmissions
  • Improves Transmission Life
  • Optimum Performance
  • Firmer shifts

Application:

Year Make Model Submodel Engine Size
1980 - 1984 Pontiac Bonneville
1980 - 1981 Pontiac Catalina
1981 Pontiac Firebird
1980 Pontiac Grand Am
1980 Pontiac Grand LeMans Base
1980 Pontiac Grand LeMans LE
1980 Pontiac Grand LeMans Safari
1981 - 1983 Pontiac Grand LeMans
1980 - 1984 Pontiac Grand Prix
1980 - 1981 Pontiac LeMans
1983 - 1984 Pontiac Parisienne
1980 - 1983 Oldsmobile Custom Cruiser
1982 - 1986 Chevrolet G30
1980 - 1984 Chevrolet Impala
1982 - 1986 Chevrolet K10
1983 Chevrolet K10 Scottsdale
1982 Chevrolet K10 Suburban
1981 - 1986 Chevrolet K20
1982 - 1986 Chevrolet K20 Suburban
1982 - 1986 Chevrolet K30
1980 - 1983 Chevrolet Malibu
1980 - 1984 Chevrolet Monte Carlo
1982 - 1986 GMC C1500
1982 - 1984 GMC C1500 Suburban
1982 - 1986 GMC C2500
1982 - 1986 GMC C2500 Suburban
1982 - 1986 GMC C3500
1981 - 1984 GMC Caballero
1982 - 1986 GMC G1500
1982 - 1986 GMC G2500
1982 GMC G3500 Rally
1982 GMC G3500 Rally STX
1982 GMC G3500 Vandura
1982 GMC G3500 Magnavan
1982 GMC G3500 Rally Camper Special
1982 GMC G3500 Vandura Special
1984 - 1986 GMC G3500
1987 - 1988 GMC G3500 Rally Custom
1982 - 1986 GMC Jimmy
1982 - 1986 GMC K1500
1982 GMC K1500 Suburban
1982 - 1986 GMC K2500
1982 - 1986 GMC K2500 Suburban
1982 - 1986 GMC K3500
1980 - 1983 Oldsmobile 98
1980 Oldsmobile Cutlass
1981 Oldsmobile Cutlass LS
1981 Oldsmobile Cutlass Brougham
1980 Oldsmobile Cutlass Salon
1980 - 1984 Oldsmobile Cutlass Calais
1980 - 1983 Oldsmobile Cutlass Cruiser
1980 - 1984 Oldsmobile Cutlass Supreme
1980 - 1983 Oldsmobile Delta 88
1982 - 1983 Oldsmobile Toronado
1978 - 1981 Buick Century
1980 - 1983 Buick Electra
1980 - 1983 Buick LeSabre
1980 - 1983 Buick Estate Wagon
1980 - 1984 Buick Regal
1982 Cadillac DeVille
1982 Cadillac Fleetwood Brougham
1982 Cadillac Fleetwood Brougham d'Elegance
1982 - 1986 Chevrolet K5 Blazer
1982 - 1986 Chevrolet C10
1982 - 1984 Chevrolet C10 Suburban
1982 - 1986 Chevrolet C20
1982 - 1986 Chevrolet C20 Suburban
1982 - 1986 Chevrolet C30
1981 Chevrolet Camaro
1980 - 1984 Chevrolet Caprice
1981 Chevrolet Corvette
1980 - 1984 Chevrolet El Camino
1982 - 1986 Chevrolet G10
1982 - 1986 Chevrolet G20

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
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:
  1. 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
SKU: 8107171698

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4.9 ★★★★★
Based on 27 reviews
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Product Reviews
V
Verified Purchase
Vinnae
Belleville, US
★★★★★ 5
Easy to install
Size: 23.6 Inch, Color: White, Size: 23.6 Inch, Color: White
This product exceeded my expectations. The installation process was incredibly straightforward—even for someone with little to no experience—and the instructions were clear and easy to follow. Once installed, it feels very sturdy and secure, with no wobbling or shifting at all. You can tell it’s well-designed and made with quality materials. I also appreciated how quickly I was able to set everything up without needing any extra tools or help. Overall, it’s a reliable, user-friendly product that I would absolutely recommend to anyone looking for something dependable and easy to install. Drill is required though.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026
M
Verified Purchase
Mac
Los Angeles, US
★★★★★ 5
It holds up weight
Size: 23.6 Inch, Color: White
Nice boards. I will order again
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Reviewed in the United States on April 4, 2026
D
Verified Purchase
Dania La Rosa
Lowell, US
★★★★★ 1
Don't buy
Size: 23.6 Inch, Color: White
The shelf is very flimsy and not sturdy at all. It feels unstable and poorly made. Definitely not worth the money, I wouldn’t recommend wasting your time or money on this product.
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Reviewed in the United States on February 22, 2026
C
Verified Purchase
Chris
Lake Worth, US
★★★★★ 5
Looks Great with a Couple of Modifications
Turned out nice. I would say for the price, it's great quality and took about 45 mins to assemble, but I was also taking my time and using a screw gun. I wouldn't assemble everything by hand. Maybe to get the machined screws started by hand but everything else use a screw gun or drill. 1 thing to look out for: The light strip has a piece of it's stickers that is longer on the one end. I think that's so you can move the light strip over and then the end with the cord on it can be routed threw the top of the wooden side panel, then down on the outside of the shelf. As you can see in my video, I had to route it down on the inside of the shelf because the part that connects the power cord to the led strip landed right where 2 wood panels need to be screwed together. This might seem confusing in this review, but lay down the light strip 1st and then you might understand what I mean. The way mine turned out is still OK, but as you can see the power button control has to be mounted on the inside and you'll see it. Not a big deal for me, but that's not the way I wanted it to begin with. Also, I hated that the cord was white. I just put a couple coats of black spray paint and it looks a lot better.
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Reviewed in the United States on September 24, 2025
B
Verified Purchase
Billy Avina
Battle Creek, US
★★★★★ 5
Just get it don't hesitate
Size: 8.6"D x 23.6"W x 33.8"H, Color: Black
It's really nice and bold looking
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026

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