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Ships within 48 hours · Estimated delivery Jul 25 - Jul 30
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For Your Every Summer RSVP, with Code: SUMMER15
Description
B&M Shift Improver Kit - GM TH700R4/4L60 Transmissions - 70239Overview: The B&M Shift Improver kits feature two options to recalibrating your 1982 1993 GM TH700R4 4L60 automatic transmissions. First is the HEAVY DUTY set up, giving you firm positive shifts without loss of driver comfort for improved performance in all street vehicles. This is a great option for performance street driving or towing. The second is our STREET STRIP set up. Be warned, this will deliver firm positive shifts you will feel, along with
Overview:
The B&M® Shift Improver kits™ feature two options to recalibrating your 1982-1993 GM TH700R4/4L60 automatic transmissions. First is the HEAVY DUTY set-up, giving you firm positive shifts without loss of driver comfort for improved performance in all street vehicles. This is a great option for performance street driving or towing. The second is our STREET/STRIP set-up. Be warned, this will deliver firm positive shifts you will feel, along with easily chirping the tires when shifting somewhat aggressively. This setting is recommend for high performance street/strip use, or for competitive events when you want the hardest, quickest shifts possible from a shift improver kit. Note: Does not fit GM TH4L60E (electronic) transmissions.
Features:
- Perfect for Towing or Street/Strip Use
- Eliminates Soft and Sluggish Shift
- Eliminates Shift Overlap
- Provides Crisp Shifts
- Easy Installation
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| 1985 - 1992 | GMC | Safari | ||
| 1987 | GMC | V1500 | ||
| 1987 - 1991 | GMC | V1500 Suburban | ||
| 1987 | GMC | V2500 | ||
| 1987 - 1991 | GMC | V2500 Suburban | ||
| 1987 | Chevrolet | V10 | ||
| 1987 - 1988 | Chevrolet | V10 Suburban | ||
| 1989 - 1991 | Chevrolet | V1500 Suburban | ||
| 1987 | Chevrolet | V20 | ||
| 1987 - 1988 | Chevrolet | V20 Suburban | ||
| 1989 - 1991 | Chevrolet | V2500 Suburban | ||
| 1987 - 1988 | Chevrolet | V30 | ||
| 1989 - 1991 | Chevrolet | V3500 | ||
| 1982 - 1992 | GMC | C1500 | ||
| 1982 - 1992 | GMC | C1500 Suburban | ||
| 1982 - 1992 | GMC | C2500 | ||
| 1982 - 1992 | GMC | C2500 Suburban | ||
| 1982 - 1991 | GMC | C3500 | ||
| 1984 - 1987 | GMC | Caballero | ||
| 1983 - 1992 | GMC | G1500 | ||
| 1983 - 1992 | GMC | G2500 | ||
| 1983 - 1992 | GMC | G3500 | ||
| 1985 - 1988 | GMC | G3500 | Rally | |
| 1985 - 1988 | GMC | G3500 | Rally STX | |
| 1985 - 1988 | GMC | G3500 | Vandura | |
| 1985 - 1988 | GMC | G3500 | Rally Custom | |
| 1985 - 1988 | GMC | G3500 | Magnavan | |
| 1985 - 1988 | GMC | G3500 | Rally Camper Special | |
| 1985 - 1988 | GMC | G3500 | Vandura Special | |
| 1987 - 1991 | GMC | V3500 | ||
| 1992 | GMC | Yukon | ||
| 1991 - 1992 | Oldsmobile | Bravada | ||
| 1984 | Oldsmobile | Cutlass Calais | ||
| 1984 | Oldsmobile | Cutlass Supreme | ||
| 1988 | Oldsmobile | Cutlass Supreme | Classic | |
| 1988 | Oldsmobile | Cutlass Supreme | Classic Brougham | |
| 1983 - 1986 | Pontiac | Bonneville | ||
| 1983 - 1993 | Pontiac | Firebird | ||
| 1989 | Pontiac | Firebird | Base | |
| 1989 | Pontiac | Firebird | Formula | |
| 1989 | Pontiac | Firebird | Trans Am | |
| 1989 | Pontiac | Firebird | Trans Am GTA | |
| 1983 - 1986 | Pontiac | Grand Prix | ||
| 1983 - 1986 | Pontiac | Parisienne | ||
| 1988 | Pontiac | Safari | ||
| 1988 - 1992 | Oldsmobile | Custom Cruiser | ||
| 1982 - 1986 | Chevrolet | K5 Blazer | ||
| 1987 - 1992 | Chevrolet | Blazer | ||
| 1982 - 1986 | Chevrolet | C10 | ||
| 1982 - 1986 | Chevrolet | C10 Suburban | ||
| 1990 - 1992 | Chevrolet | C1500 | Cheyenne | |
| 1990 - 1992 | Chevrolet | C1500 | Scottsdale | |
| 1990 - 1992 | Chevrolet | C1500 | Silverado | |
| 1990 - 1992 | Chevrolet | C1500 | WT | |
| 1988 - 1989 | Chevrolet | C1500 | ||
| 1992 | Chevrolet | C1500 Suburban | ||
| 1982 - 1986 | Chevrolet | C20 | ||
| 1982 - 1986 | Chevrolet | C20 Suburban | ||
| 1988 - 1992 | Chevrolet | C2500 | ||
| 1992 | Chevrolet | C2500 Suburban | ||
| 1982 - 1986 | Chevrolet | C30 | ||
| 1988 - 1990 | Chevrolet | C3500 | ||
| 1983 - 1993 | Chevrolet | Camaro | ||
| 1982 - 1993 | Chevrolet | Caprice | ||
| 1985 - 1992 | Chevrolet | Caprice | Classic | |
| 1991 - 1992 | Chevrolet | Caprice | Classic LTZ | |
| 1982 - 1989 | Chevrolet | Corvette | ||
| 1990 - 1993 | Chevrolet | Corvette | Base | |
| 1993 | Chevrolet | Corvette | 40th Anniversary Edition | |
| 1988 | Buick | Electra | Estate Wagon | |
| 1988 | Buick | LeSabre | Estate Wagon | |
| 1984 | Buick | Regal | ||
| 1982 - 1987 | Chevrolet | El Camino | ||
| 1983 - 1992 | Chevrolet | G10 | ||
| 1983 - 1992 | Chevrolet | G20 | ||
| 1983 - 1992 | Chevrolet | G30 | ||
| 1982 - 1985 | Chevrolet | Impala | ||
| 1982 - 1986 | Chevrolet | K10 | ||
| 1983 | Chevrolet | K10 | Custom | |
| 1983 | Chevrolet | K10 | Scottsdale | |
| 1983 | Chevrolet | K10 | Silverado | |
| 1982 - 1986 | Chevrolet | K10 Suburban | ||
| 1988 - 1992 | Chevrolet | K1500 | ||
| 1992 | Chevrolet | K1500 Suburban | ||
| 1982 - 1986 | Chevrolet | K20 | ||
| 1982 - 1986 | Chevrolet | K20 Suburban | ||
| 1988 - 1992 | Chevrolet | K2500 | ||
| 1992 | Chevrolet | K2500 Suburban | ||
| 1982 - 1986 | Chevrolet | K30 | ||
| 1988 - 1989 | Chevrolet | K3500 | ||
| 1982 - 1983 | Chevrolet | Malibu | ||
| 1982 - 1988 | Chevrolet | Monte Carlo | ||
| 1987 | Chevrolet | R10 | ||
| 1987 - 1988 | Chevrolet | R10 Suburban | ||
| 1989 - 1991 | Chevrolet | R1500 Suburban | ||
| 1988 | Chevrolet | R20 | Cheyenne | |
| 1988 | Chevrolet | R20 | Custom Deluxe | |
| 1988 | Chevrolet | R20 | Scottsdale | |
| 1991 - 1993 | Buick | Roadmaster | ||
| 1991 - 1993 | Buick | Commercial Chassis | ||
| 1993 | Cadillac | Fleetwood | ||
| 1990 - 1992 | Cadillac | Brougham | ||
| 1992 - 1993 | Cadillac | Commercial Chassis | Brougham | |
| 1985 - 1992 | Chevrolet | Astro | ||
| 1993 | Chevrolet | Blazer | Cheyenne | |
| 1983 - 1991 | GMC | S15 Jimmy | ||
| 1982 - 1992 | GMC | Jimmy | ||
| 1983 - 1990 | GMC | S15 | ||
| 1991 - 1993 | GMC | Sonoma | ||
| 1991 | GMC | Syclone | ||
| 1992 | GMC | Typhoon | ||
| 1988 | Chevrolet | R20 | Silverado | |
| 1987 | Chevrolet | R20 | ||
| 1987 - 1988 | Chevrolet | R20 Suburban | ||
| 1989 | Chevrolet | R2500 | ||
| 1989 - 1991 | Chevrolet | R2500 Suburban | ||
| 1987 - 1988 | Chevrolet | R30 | ||
| 1989 - 1991 | Chevrolet | R3500 | ||
| 1983 - 1992 | Chevrolet | S10 Blazer | ||
| 1983 - 1993 | Chevrolet | S10 | ||
| 1982 - 1992 | GMC | K1500 | ||
| 1982 - 1992 | GMC | K1500 Suburban | ||
| 1982 - 1992 | GMC | K2500 | ||
| 1982 - 1992 | GMC | K2500 Suburban | ||
| 1982 - 1991 | GMC | K3500 | ||
| 1987 | GMC | R1500 | ||
| 1987 - 1991 | GMC | R1500 Suburban | ||
| 1987 - 1989 | GMC | R2500 | ||
| 1987 - 1991 | GMC | R2500 Suburban | ||
| 1987 - 1991 | GMC | R3500 |
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 | No |
| 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
4.5 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 5
MUST BUY
This was a nice addition to my Prequel collection! I just loved this product and so did my skin. This is a very light weight product that hydrates and plumps the skin. I apply it after my VitC serum and it works great under my makeup. I will be repurchasing. Such a good product at a good price!
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Makes my skin feel firmer
I bought this and the Prequel SPF, my first time using this product line. Definitely impressed and in my opinion, a great price for what seems like a quality product. The serum has a lightweight texture,, absorbs quickly, and my skin looks and feels well hydrated right away. More so than when I use a regular hyaluronic acid. There is no pilling or heavy feel so easy to use with other products. I can't say whether it improves skin texture over time or what the benefits are with continued use. I've been using it consistently with the SPF for the last two weeks, so it only been a short while. But when I put it on, my skin noticeably looks more springy and feels better throughout the day. I have mature, dry skin so I do use a moisturizer over this before sun protection. I imagine that if you have oily or normal skin you might be able to use this in place of moisturizer during the day.
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Reviewed in the United States on October 27, 2025
★★★★★ 5
Plump, Soft Skin with a Smooth Finish
I’ve really been enjoying the Prequel Skin Multi‑Quench Plumping Hydration Serum. It gives my skin a soft, hydrated feel without any heaviness, and it absorbs quickly so it never interferes with the rest of my routine. One of the best parts is how smoothly my makeup applies afterward—everything blends better and looks more even. Overall, it’s a lightweight, effective serum that adds the perfect boost of hydration.
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Reviewed in the United States on December 23, 2025
★★★★★ 5
New favorite moisture serum
I am blown away by this formula - it goes on silky and absorbs into the skin, giving it a plump, hydrated glow without ANY stickiness or annoying shine. Two pumps after cleansing and toner is just right but you can also go in heavier and use in place of a moisturizer. This truly gives me lasting moisture, which is amazing for a light to mid-weight serum. Wears great with other complexion products and under makeup. The glass bottle is luxe and the pump isn't the least bit messy. Glycerin is all the rage in terms of "hot" ingredients right now - and I have to say after using this, I'm a believer. I've pretty much replaced a classic daily moisturizer with pairing this serum before Strata Lipid Gold (another holy grail) - which works great under my moisturizing Japanese sunscreen (Canmake Mermaid Skin). These steps provide a flawless, juicy base under makeup for my maturing (43-year old) skin. Can't wait to try more products in this line.
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Reviewed in the United States on September 29, 2024
★★★★★ 4
Good
Moisturizing and gel like. It pills when used with the Prequel mineral SPF.
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Reviewed in the United States on March 31, 2026