1979 GMC P2500 Performance Transmissions
Keep Your 1979 GMC P2500 in Top Shape with Quality Performance Transmissions
Whether you’re repairing or upgrading your Performance Transmission, using high-quality parts is key to keeping your 1979 GMC P2500 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Transmission Shift Kits. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.
Competitive Prices and Extensive Inventory
The average price for a 1979 GMC P2500 Performance Transmission at Advance Auto Parts is around $118.99, with a range that starts at $70.99 and goes up to $166.99. With 2 options in stock from one trusted brand, finding the right fit is easy. Popular picks like Transpak For 65-87 TH400 Transmission and Shift Improver Kit For 68-81 TH-350 Transmission start at just $70.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Performance Transmission, don’t forget to check out other key components like Performance Fuel Systems and Performance Oil Filters. At Advance Auto Parts, we’re here to help you keep your 1979 GMC P2500 in peak condition, inside and out.
Find Your Specific 1979 GMC P2500 Performance Transmissions
Looking for the perfect Performance Transmission for your 1979 GMC P2500? You’re in the right place. Below, you’ll find links to various types of Performance Transmissions that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Performance Transmissions, ensuring durability and a precise fit for your GMC P2500. Whether you’re driving a 1979 model or another popular model year like
1980,
1981,
1982,
1983,
1984,
1985,
1986, and
1987, we’ve got you covered. Purchasing Performance Transmissions from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Performance Transmissions that fit your vehicle.
Essential 1979 GMC P2500 Performance Transmissions
B & M – Transpak For 65-87 TH400 Transmission (Part No.20228)
from
$166.99
The B&M Transpak has all the features in the Shift Improver Kit, plus it provides additional driver manual control. Retain full automatic features and standard shift points with selector in Drive.
Product Features:
See More
Product Features:
- Recalibrate Auto. Transmission
- Optimum Performance
- Select Your App. Mode
- Improves Transmission Life
- Trans. Removal Not Required
- Downshift At Any Speed
- Great For Trailer Towing
- For Heavy Loads Driving Downhill
B & M – Shift Improver Kit For 68-81 TH-350 Transmission (Part No.30262)
from
$70.99
HEAVY DUTY-Firm positive shifts without loss of driver comfort for improved performance in all street vehicles. STREET/STRIP-Positive shifts for high performance street use or for competitive events. Hardest, quickest possible shift.
Product Features:
See More
Product Features:
- Provides Crisp Shifts
- On Any Stock Automatic Transmission
- Eliminates Soft/Sluggish Shift
- Eliminates Shift Overlap
- Eliminate Clutch and Band Wear
Popular 1979 GMC P2500 Performance Transmissions Categories
Most Popular Performance Transmission Shift Kits for 1979 GMC P2500s
Enhance your 1979 GMC P2500 with one of the 2 Performance Transmission Shift Kits we have in stock, starting at just $70.99.
B & M – Transpak For 65-87 TH400 Transmission (Part No.20228)
from
$166.99
The B&M Transpak has all the features in the Shift Improver Kit, plus it provides additional driver manual control. Retain full automatic features and standard shift points with selector in Drive.
Product Features:
See More
Product Features:
- Recalibrate Auto. Transmission
- Optimum Performance
- Select Your App. Mode
- Improves Transmission Life
- Trans. Removal Not Required
- Downshift At Any Speed
- Great For Trailer Towing
- For Heavy Loads Driving Downhill
B & M – Shift Improver Kit For 68-81 TH-350 Transmission (Part No.30262)
from
$70.99
HEAVY DUTY-Firm positive shifts without loss of driver comfort for improved performance in all street vehicles. STREET/STRIP-Positive shifts for high performance street use or for competitive events. Hardest, quickest possible shift.
Product Features:
See More
Product Features:
- Provides Crisp Shifts
- On Any Stock Automatic Transmission
- Eliminates Soft/Sluggish Shift
- Eliminates Shift Overlap
- Eliminate Clutch and Band Wear
FAQs for 1979 GMC P2500 Performance Transmissions
What are the best-selling Performance Transmissions for 1979 GMC P2500s?
Out of 2 Performance Transmissions that fit 1979 GMC P2500s, the following parts are the top sellers:
- Transpak For 65-87 TH400 Transmission (17130002) – $166.99
- Shift Improver Kit For 68-81 TH-350 Transmission (6280919) – $70.99
What’s the price range for 1979 GMC P2500 Performance Transmissions?
The prices of Performance Transmissions for the 1979 GMC P2500 range from $70.99 up to $166.99 for the most premium parts.
What is the average price of a Performance Transmission for a 1979 GMC P2500?
The average price for Performance Transmissions for the 1979 GMC P2500 is $118.99. Keep in mind the variety of part types within our Performance Transmission category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Performance Transmissions for other GMC P2500 model years?
What are the cheapest Performance Transmissions for my 1979 GMC P2500?
The cheapest 1979 GMC P2500 Performance Transmissions we carry are:
- Shift Improver Kit For 68-81 TH-350 Transmission (6280919) – $70.99
- Transpak For 65-87 TH400 Transmission (17130002) – $166.99
Does Advance Auto Parts sell Performance Transmissions for any other 1979 GMC models?
Yes. We stock Performance Transmissions for 12 other popular 1979 GMC models. Some of the most popular are 1979 Jimmy Performance Transmissions, 1979 K2500 Performance Transmissions, 1979 C2500 Performance Transmissions, 1979 K1500 Performance Transmissions, and 1979 C1500 Performance Transmissions.
What types of Performance Transmissions do you sell for my 1979 GMC P2500?
We currently have just 1 Performance Transmission in stock for a 1979 GMC P2500, and as of 6/2/26, it is a Performance Transmission Shift Kit.
Can I get help with 1979 GMC P2500 Performance Transmission orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about GMC Performance Transmissions and more.
What is your return policy for GMC P2500 Performance Transmissions?
Advance Auto Parts keeps returns simple. For new GMC P2500 Performance Transmissions and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.