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B&M 20260 Auto Transmission Upgrade kit Shift Improver GM TH400 TH375 M40 65-87

Carburetor Collectibles Specialty
(64467)
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US $72.39
or 4 interest-free payments of $18.10 available with
Condition:
New
Compatibility:
5 available17 sold

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Shipping:
US $12.45 USPS Ground Advantage®.
Located in: Virginia Beach, Virginia, United States
Delivery:
Estimated between Thu, Nov 20 and Mon, Nov 24 to 94104
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eBay item number:174665757275
Last updated on Nov 04, 2025 13:03:10 PSTView all revisionsView all revisions

Compatibility

This part is compatible with 2995 vehicle(s)
YearMakeModelTrimEngineNotes
1990CadillacBroughamBase Sedan 4-Door5.7L 350Cu. In. V8 GAS OHV Naturally AspiratedNote:; RWD, Base, THM400 Quantity Required:1 PartType:Automatic Transmission Shift Kit
1990CadillacBroughamd'Elegance Sedan 4-Door5.7L 350Cu. In. V8 GAS OHV Naturally AspiratedNote:; RWD, d'Elegance, THM400 Quantity Required:1 PartType:Automatic Transmission Shift Kit
1990ChevroletBlazerScottsdale Sport Utility 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally AspiratedNote:; 4WD, Scottsdale, THM400 Quantity Required:1 PartType:Automatic Transmission Shift Kit
1990ChevroletBlazerSilverado Sport Utility 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally AspiratedNote:; 4WD, Silverado, THM400 Quantity Required:1 PartType:Automatic Transmission Shift Kit
1990ChevroletC1500Cheyenne Extended Cab Pickup 2-Door5.0L 305Cu. In. V8 GAS OHV Naturally AspiratedNote:; RWD, Cheyenne, THM400 Quantity Required:1 PartType:Automatic Transmission Shift Kit
1990ChevroletC1500Cheyenne Standard Cab Pickup 2-Door5.0L 305Cu. In. V8 GAS OHV Naturally AspiratedNote:; RWD, Cheyenne, THM400 Quantity Required:1 PartType:Automatic Transmission Shift Kit
1990ChevroletC1500Scottsdale Extended Cab Pickup 2-Door5.0L 305Cu. In. V8 GAS OHV Naturally AspiratedNote:; RWD, Scottsdale, THM400 Quantity Required:1 PartType:Automatic Transmission Shift Kit
1990ChevroletC1500Scottsdale Standard Cab Pickup 2-Door5.0L 305Cu. In. V8 GAS OHV Naturally AspiratedNote:; RWD, Scottsdale, THM400 Quantity Required:1 PartType:Automatic Transmission Shift Kit
1990ChevroletC1500Silverado Extended Cab Pickup 2-Door5.0L 305Cu. In. V8 GAS OHV Naturally AspiratedNote:; RWD, Silverado, THM400 Quantity Required:1 PartType:Automatic Transmission Shift Kit
1990ChevroletC1500Silverado Standard Cab Pickup 2-Door5.0L 305Cu. In. V8 GAS OHV Naturally AspiratedNote:; RWD, Silverado, THM400 Quantity Required:1 PartType:Automatic Transmission Shift Kit
1990ChevroletC1500WT Standard Cab Pickup 2-Door5.0L 305Cu. In. V8 GAS OHV Naturally AspiratedNote:; RWD, WT, THM400 Quantity Required:1 PartType:Automatic Transmission Shift Kit
1990ChevroletC2500Base Standard Cab Pickup 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally AspiratedNote:THM400; RWD, Base Quantity Required:1 PartType:Automatic Transmission Shift Kit
1990ChevroletC2500Cheyenne Cab & Chassis 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally AspiratedNote:; RWD, Cheyenne, THM400 Quantity Required:1 PartType:Automatic Transmission Shift Kit
1990ChevroletC2500Cheyenne Extended Cab Pickup 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally AspiratedNote:; RWD, Cheyenne, THM400 Quantity Required:1 PartType:Automatic Transmission Shift Kit
1990ChevroletC2500Cheyenne Standard Cab Pickup 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally AspiratedNote:; RWD, Cheyenne, THM400 Quantity Required:1 PartType:Automatic Transmission Shift Kit
1990ChevroletC2500Scottsdale Cab & Chassis 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally AspiratedNote:; RWD, Scottsdale, THM400 Quantity Required:1 PartType:Automatic Transmission Shift Kit
1990ChevroletC2500Scottsdale Extended Cab Pickup 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally AspiratedNote:; RWD, Scottsdale, THM400 Quantity Required:1 PartType:Automatic Transmission Shift Kit
1990ChevroletC2500Scottsdale Standard Cab Pickup 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally AspiratedNote:; RWD, Scottsdale, THM400 Quantity Required:1 PartType:Automatic Transmission Shift Kit
1990ChevroletC2500Silverado Cab & Chassis 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally AspiratedNote:; RWD, Silverado, THM400 Quantity Required:1 PartType:Automatic Transmission Shift Kit
1990ChevroletC2500Silverado Extended Cab Pickup 2-Door5.7L 350Cu. In. V8 GAS OHV Naturally AspiratedNote:; RWD, Silverado, THM400 Quantity Required:1 PartType:Automatic Transmission Shift Kit
Portions of the information contained in this table have been provided by rburchfield55

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ...
Performance Part
Yes
Country/Region of Manufacture
United States
OE/OEM Part Number
20260
Modified Item
No
Custom Bundle
No
Bin Location
???
Vintage Part
Yes
Type
Shift Kit
Fitment Type
Performance/Custom
Non-Domestic Product
No
Mounting Hardware Included
No
Manufacturer Warranty
30 Day
Brand
B&M
Manufacturer Part Number
20260
Category

About this product

Product Identifiers

Brand
B&M
Manufacturer Part Number
20260
eBay Product ID (ePID)
110269786

Additional Product Features

Notes
Description--Shift Improver Kit Automatic Transmission Shift Kit
Sub Type
Automatic Transmission Shift Kit
Part Type
Service Kits

Item description from the seller

About this seller

Carburetor Collectibles Specialty

99.9% positive feedback•208K items sold

Joined Jan 2003
Usually responds within 24 hours
CCS Performance Carburetors offers Carburetor Repair Parts for cars dating back to 1926. From single barrel Carter to the four-barrel Holley and Quick Fuel Technology Carburetors. CCS covers them all. ...
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Detailed seller ratings

Average for the last 12 months
Accurate description
5.0
Reasonable shipping cost
5.0
Shipping speed
5.0
Communication
5.0

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  • d***a (530)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Seller has quickly answered questions and provided me with information for an informed purchase. Thank you. Quick delivery and good communications. Items are always packed secure and safe. I have purchased from this seller before and will continue to do business with him. I definitely recommend this seller.
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  • t***8 (224)- Feedback left by buyer.
    Past year
    Verified purchase
    Good seller, good communication. Parts look great, new as described. USPS leaves a lot to be desired! Package left VA, then went to Dallas, TX, BACK to VA, then FINALLY to its destination in Beaumont, Texas. This has happened twice in a year time period. Thank GOD for UPS and FedEx!
    Holley 1009-354 1-11/16 Stainless Throttle Plate # 354 (#170617596884)
  • p***e (3830)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    GREAT SELLER FAST SHIPPING CAREFULLY PACKAGED BUY WITH CONFIDENCE! WILL DEFINITELY BE BUYING AGAIN AS EVERYTHING WENT GREAT! GREAT QUALITY AND VALUE! CONDITION WAS AS DESCRIBED! APPEARANCE WAS AS SAID! LOOKS GOOD
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Product ratings and reviews

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4.8
16 product ratings
  • 13 users rated this 5 out of 5 stars
  • 2 users rated this 4 out of 5 stars
  • 1 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 0 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

See all 14 reviews
  • by oeghwsfosig@deleted
    Apr 10, 2018Top favorable review

    Heavy Duty or Street/Strip Mode?

    Fast/easy installation. If you can change trans fluid, you can do this in about 3 hours. The directions were good, except for the diagram of how to position the six check balls on the new separator plate (the most critical part). The drawing is atrocious. Take your time and figure it out. It's awful. I debated on which shift "mode" to set it up for. I decided on the milder "heavy duty" mode vs the "street/strip" mode. My car is a low miles, all original big block/400TH '71 Monte Carlo and I didn't want a crazy firm shift. The shift I got is very positive and precise but not neck snapping, tire barking, firm. If I had a driver or a street car that I'm going to drive the wheels off, I'd opt for the "street/strip" mode.

    Verified purchase: YesCondition: NewSold by: streetrays

  • by 1999harleydavidson2013
    Oct 15, 2019

    B&M SHIFT KIT TURBO 400

    GREAT PRICE ! -GREAT PRODUCT !

    Verified purchase: YesCondition: NewSold by: ccr_products

  • by crazyforpontiac
    Oct 22, 2022

    Have used it before, works well.

    good product

    Verified purchase: YesCondition: NewSold by: espeedshop

  • by stemese-0
    Mar 25, 2020

    Works great

    Hooks right up with no problems

    Verified purchase: YesCondition: NewSold by: streetrays

  • by thomalashle0
    Oct 26, 2018

    Good

    Only one I use

    Verified purchase: YesCondition: NewSold by: barnettperformance

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