1966 GMC L3500 Performance and Racing Products
Find Your Specific 1966 GMC L3500 Performance and Racing Products
Below you will find various in-demand GMC Performance and Racing Products, components and accessories for your 1966 L3500. Advance Auto Parts has popular L3500 parts like Performance Transmissions, Performance Ignition Products, Performance Shifters and more. You’ll also find aftermarket and OEM Performance and Racing Products for other L3500 model years including
1965
1967 and more. Select a category of 1966 GMC L3500 Performance and Racing Products below and start saving instantly.
Popular 1966 GMC L3500 Performance and Racing Products Categories
Essential Performance and Racing Products for 1966 GMC L3500s
B & M – Flexplate for 168 tooth, 2-Piece Rear Main Seal, Chevy V8 (Part No.20230)
from
$173.99
Heavy Duty Flexplate fits: Chevrolet – ’55-’85 SB V8 And 90 deg. V6 with 168 tooth ring gear And 10-3/4 in. or 11-1/2 in b.c. exc. 400Chevrolet – ’90 And earlier Chevrolet BB V8 with 168 tooth ring gear And 10-3/4 in or 11-1/2 in b.c. exc. 454
Product Features:
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Product Features:
- NHRA/IHRA Legal For All Classes
- Includes SFI Certification Sticker
- Ideal For Street Applications
- To Extreme Duty Racing
- To High RPM Use
B & M – Master Overhaul Kit For Powerglide Transmission (Part No.21040)
from
$459.99
The B&M Master Racing Overhaul Kit includes all gaskets, seals, bushings and high performance friction materials. No transbrake body gaskets or instructions included.
Product Features:
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Product Features:
- Complete High Perf. Or Racing Trans. Overhaul
- Includes Only OEM Valvebody Gaskets
- Instructions Not Included
B & M – Automatic Shifter, Pro Ratchet Shift, Powerglide (Part No.80840)
from
$499.99
The Pro Ratchet shifter is one of our most popular and easiest to operate race shifters. Features include positive ratcheting design that self-centers the handle after each shift giving you maximum clearance behind the shifter, and will not allow you to m
Product Features:
See More
Product Features:
- Single Hand Operated Reverse Lockout
- Reverse Lockout Meets NHRA And IHRA Requirements
- Quick And Easy To Operate
- Stick Always Returns To Center Position
- Easiest Unit To Double Shift w/Air/CO2/Electric Mech
B & M – Automatic Shifter, Light Truck Megashifter (Part No.80680)
from
$539.99
The B&M Megashifter has it all, form, function and classic style. This all adds up to bring you a quality shifter that’s been one of the most popular automatic shifters of all time. The light truck Megashifter is better suited for truck and bench seat applications with its overall height of 14.85-inches tall (2.25-inches taller than #80690 Megashifter.) The positive ratcheting action won’t allow you to over-shift and miss a gear at that critical moment, along with the reverse lockout feature meets NHRA/IHRA safety rules for those weekend grudge races at the track, while the look and feel of the T-handle and accordion style shift boot really shows off its racing heritage. Other features include a black console that you can trim to match the contour of your vehicle’s floor, 5-foot long shifter cable, cable brackets, transmission shift levers, chrome plated top plate with lighted gear indicator and everything needed for an easy at home installation. An optional T-handle with a 12-volt button is available separately for actuating a trans-brake, nitrous oxide or other accessories for the hard-core performance enthusiast. This shifter fits most popular Chrysler, Ford and GM 3 and 4-speed automatic transmissions. Note: AOD transmissions require optional kit #40496, GM 4L60E through 4L85E transmissions with PRNDL switch will require optional kit #70499. Overall Dimensions – 14.9L x 6.4W x 14.8H
Product Features:
See More
Product Features:
- Universal Floor Mount Application
- Cable Operated
- Quick Installation
- Accurate Shifting
- NHRA/IHRA Reverse Lockout Meets Requirements
- Use w/Reverse Pattern Valve Body
- Includes Neutral Safety Switch
- Includes Backup Light Switch
Mr. Gasket – Thermocap Radiator Cap (Part No.2471S)
from
$53.99
Knowing your coolant temperature can help to prevent burn injuries. Thermocap Cap, with its built-in calibrated thermometer, indicates the coolant temperature. This is useful information prior to cap removal. Never attempt to remove Thermocap Cap when the coolant temperature is very hot. The escaping hot coolant and steam may burn you. Reclamation valve works great with your coolant recovery system. Your radiator can reclaim coolant from your overflow bottle. Wide 30 degree to 270 degree F temperature range. Calibrated in centigrade and Fahrenheit. Color-coded temperature ranges.
Product Features:
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Product Features:
- Indicates Coolant Temperature
- Helps to Prevent Injuries from coolant or steam burns
- Integrated Coolant Reclamation Valve
- Improves Underhood Appearance
- Fahrenheit and centigrade readings
- Various valve pressures available
Mr. Gasket – Thermocap Radiator Cap (Part No.2470R)
from
$56.99
The fastest, easiest way to know exactly when it’s safe to open your radiator cap. ThermoCap, with its built-in calibrated thermometer, indicates the coolant temperature.
Product Features:
See More
Product Features:
- Indicates coolant temperature
- Helps prevent coolant injuries
- Fahrenheit and centigrade readings
- Color-coded temperature ranges
- Integrated coolant reclamation valve
- Improves under-hood appearance
- Chromed crown with a colored trim ring
Mallory – Promaster Classic Series; Ignition Coil (Part No.29440)
from
$204.99
The Mallory Promaster Classic series ignition coil is designed to meet today’s specialized ignition requirements. This coil features a faster rise time and increased spark duration (compared to stock) to increase performance. It has a glass-filled polyester case and oil-filled construction to ensure a long life and no energy loss from arcing. This coil also offers excellent wire retention with a spark plug type secondary post, and brass contact terminals.
Product Features:
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Product Features:
- Classic good looks
- High current / voltage output
- Spark plug style terminal for excellent coil wire retention
- Brass contact terminals
- Mounting bracket included
- Can be used on inductive and CD ignitions
Mallory – Unilite Ignition Module (Part No.605)
from
$95.99
Requires a 1.4 ohms Ballast resistor, Loom resistor or internally resisted coil.
Product Features:
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Product Features:
- Service Part
- No Moving Parts To Wear Out
- Self Contained Unit
- Can Drive OEM
- Can Drive High Performance Ignition Coils
Upgrade your 1966 GMC L3500 with Top-Quality Performance and Racing Products
When it comes to maintaining or upgrading your 1966 GMC L3500, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your GMC or enhancing its overall performance, Performance and Racing Products are key to keeping your L3500 functioning at its best. At Advance Auto Parts, we offer a wide selection of 8 Performance and Racing Products for the 1966 GMC L3500, designed to meet your needs without breaking the bank.
From
Performance Transmission
replacements to
Performance Ignition Products
upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.
Affordable Prices and Wide Selection
Shopping for Performance and Racing Products for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Performance and Racing Products for your 1966 GMC L3500 at great prices.
Our Performance and Racing Products inventory for this model
ranges from just $53.99 to $539.99, with
an average price of $252.35.
Our 8 Performance and Racing Products in stock come from 3 trusted brands, so you’re sure to find the right part for your 1966 GMC L3500 without overspending.
Top Brands and High Customer Satisfaction
Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 1966 GMC L3500, we stock popular OEM and aftermarket Performance and Racing Products from top names
like Mallory, and more.
Mallory Performance and Racing Products
start at just $95.99 and boast an impressive 4.9 stars average rating from customers.
With 88 customer reviews and counting, our 1966 GMC L3500 Performance and Racing Products have a strong track record of reliability, ensuring you can trust your purchase.
Explore Related Parts and More
While you’re here, don’t forget to check out other essential categories that go hand in hand with Performance and Racing Product upgrades. Explore related part types like Batteries and Chargers, Fluids and Chemicals
and more to make sure your 1966 GMC L3500 is always ready to roll. We’re committed to providing you with everything you need to keep your L3500 in top shape, all in one place.
Start shopping confidently below for your 1966 GMC L3500!
Best-Selling Performance Transmissions for 1966 GMC L3500s
Enhance the driving experience in your GMC with 1 quality Performance Transmission components, starting at $459.99.
B & M – Master Overhaul Kit For Powerglide Transmission (Part No.21040)
from
$459.99
The B&M Master Racing Overhaul Kit includes all gaskets, seals, bushings and high performance friction materials. No transbrake body gaskets or instructions included.
Product Features:
See More
Product Features:
- Complete High Perf. Or Racing Trans. Overhaul
- Includes Only OEM Valvebody Gaskets
- Instructions Not Included
Most Popular 1966 GMC L3500 Performance Ignition Products
Customize your GMC with 2 Performance Ignition Products products
like Performance Ignition Parts, all
priced under $204.99.
Mallory – Unilite Ignition Module (Part No.605)
from
$95.99
Requires a 1.4 ohms Ballast resistor, Loom resistor or internally resisted coil.
Product Features:
See More
Product Features:
- Service Part
- No Moving Parts To Wear Out
- Self Contained Unit
- Can Drive OEM
- Can Drive High Performance Ignition Coils
Mallory – Promaster Classic Series; Ignition Coil (Part No.29440)
from
$204.99
The Mallory Promaster Classic series ignition coil is designed to meet today’s specialized ignition requirements. This coil features a faster rise time and increased spark duration (compared to stock) to increase performance. It has a glass-filled polyester case and oil-filled construction to ensure a long life and no energy loss from arcing. This coil also offers excellent wire retention with a spark plug type secondary post, and brass contact terminals.
Product Features:
See More
Product Features:
- Classic good looks
- High current / voltage output
- Spark plug style terminal for excellent coil wire retention
- Brass contact terminals
- Mounting bracket included
- Can be used on inductive and CD ignitions
Top Picks for 1966 GMC L3500 Performance Shifters
Upgrade GMC L3500s with top-quality Performance Shifters parts, including 2 OEM and aftermarket selections for your 1966 model.
B & M – Automatic Shifter, Light Truck Megashifter (Part No.80680)
from
$539.99
The B&M Megashifter has it all, form, function and classic style. This all adds up to bring you a quality shifter that’s been one of the most popular automatic shifters of all time. The light truck Megashifter is better suited for truck and bench seat applications with its overall height of 14.85-inches tall (2.25-inches taller than #80690 Megashifter.) The positive ratcheting action won’t allow you to over-shift and miss a gear at that critical moment, along with the reverse lockout feature meets NHRA/IHRA safety rules for those weekend grudge races at the track, while the look and feel of the T-handle and accordion style shift boot really shows off its racing heritage. Other features include a black console that you can trim to match the contour of your vehicle’s floor, 5-foot long shifter cable, cable brackets, transmission shift levers, chrome plated top plate with lighted gear indicator and everything needed for an easy at home installation. An optional T-handle with a 12-volt button is available separately for actuating a trans-brake, nitrous oxide or other accessories for the hard-core performance enthusiast. This shifter fits most popular Chrysler, Ford and GM 3 and 4-speed automatic transmissions. Note: AOD transmissions require optional kit #40496, GM 4L60E through 4L85E transmissions with PRNDL switch will require optional kit #70499. Overall Dimensions – 14.9L x 6.4W x 14.8H
Product Features:
See More
Product Features:
- Universal Floor Mount Application
- Cable Operated
- Quick Installation
- Accurate Shifting
- NHRA/IHRA Reverse Lockout Meets Requirements
- Use w/Reverse Pattern Valve Body
- Includes Neutral Safety Switch
- Includes Backup Light Switch
B & M – Automatic Shifter, Pro Ratchet Shift, Powerglide (Part No.80840)
from
$499.99
The Pro Ratchet shifter is one of our most popular and easiest to operate race shifters. Features include positive ratcheting design that self-centers the handle after each shift giving you maximum clearance behind the shifter, and will not allow you to m
Product Features:
See More
Product Features:
- Single Hand Operated Reverse Lockout
- Reverse Lockout Meets NHRA And IHRA Requirements
- Quick And Easy To Operate
- Stick Always Returns To Center Position
- Easiest Unit To Double Shift w/Air/CO2/Electric Mech
In-Demand Performance Radiators for 1966 GMC L3500s
Select from 2 premium Performance Radiators parts for your 1966 GMC L3500, with prices ranging from $53.99 to $56.99.
Mr. Gasket – Thermocap Radiator Cap (Part No.2471S)
from
$53.99
Knowing your coolant temperature can help to prevent burn injuries. Thermocap Cap, with its built-in calibrated thermometer, indicates the coolant temperature. This is useful information prior to cap removal. Never attempt to remove Thermocap Cap when the coolant temperature is very hot. The escaping hot coolant and steam may burn you. Reclamation valve works great with your coolant recovery system. Your radiator can reclaim coolant from your overflow bottle. Wide 30 degree to 270 degree F temperature range. Calibrated in centigrade and Fahrenheit. Color-coded temperature ranges.
Product Features:
See More
Product Features:
- Indicates Coolant Temperature
- Helps to Prevent Injuries from coolant or steam burns
- Integrated Coolant Reclamation Valve
- Improves Underhood Appearance
- Fahrenheit and centigrade readings
- Various valve pressures available
Mr. Gasket – Thermocap Radiator Cap (Part No.2470R)
from
$56.99
The fastest, easiest way to know exactly when it’s safe to open your radiator cap. ThermoCap, with its built-in calibrated thermometer, indicates the coolant temperature.
Product Features:
See More
Product Features:
- Indicates coolant temperature
- Helps prevent coolant injuries
- Fahrenheit and centigrade readings
- Color-coded temperature ranges
- Integrated coolant reclamation valve
- Improves under-hood appearance
- Chromed crown with a colored trim ring
Most Sold 1966 GMC L3500 Performance Flywheels
Explore our best-selling GMC parts for the 1966 L3500 among 1 OEM and aftermarket options starting from $173.99.
B & M – Flexplate for 168 tooth, 2-Piece Rear Main Seal, Chevy V8 (Part No.20230)
from
$173.99
Heavy Duty Flexplate fits: Chevrolet – ’55-’85 SB V8 And 90 deg. V6 with 168 tooth ring gear And 10-3/4 in. or 11-1/2 in b.c. exc. 400Chevrolet – ’90 And earlier Chevrolet BB V8 with 168 tooth ring gear And 10-3/4 in or 11-1/2 in b.c. exc. 454
Product Features:
See More
Product Features:
- NHRA/IHRA Legal For All Classes
- Includes SFI Certification Sticker
- Ideal For Street Applications
- To Extreme Duty Racing
- To High RPM Use
Top-Rated Performance and Racing Products Brands For Your 1966 GMC L3500
Shop for the best-rated brands offering Performance and Racing Products and other products for your 1966 GMC L3500s. Below you’ll find some of our best rated Performance and Racing Products from Mallory, and more. Performance and Racing Products from these brands that fit a 1966 L3500 start at just $95.99 and are rated as high as 4.9 stars. OEM and aftermarket Performance and Racing Products don’t get more top quality, durable, and affordable than from the brands below.
Popular Mallory 1966 GMC L3500 Performance and Racing Products
When it comes to maintaining or upgrading your 1966 GMC L3500, using quality Performance and Racing Products is essential to ensure durability and a perfect fit. Mallory ticks all of those boxes. We offer a wide selection of Mallory Performance and Racing Products, specifically designed for the 1966 GMC L3500. With over 1 Mallory brand Performance and Racing Products in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $95.99. Plus, with over 3 customer reviews and an average rating of 4.9 stars, you can trust that our Mallory Performance and Racing Products will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.
from
$95.99
(3)
Unilite Ignition Module
“I like the Unilite product because it is so small and compact compared to the HEI stuff I normally use. If you are restricted on space Its a great pro”
FAQs for 1966 GMC L3500 Performance and Racing Products
Which Performance and Racing Products are best-sellers for 1966 GMC L3500s?
Out of 8 Performance and Racing Products that fit 1966 GMC L3500s, the following parts are the top sellers:
- Thermocap Radiator Cap (10648711) – $56.99
- Flexplate for 168 tooth, 2-Piece Rear Main Seal, Chevy V8 (17130003) – $173.99
- Automatic Shifter, Light Truck Megashifter (6121039) – $539.99
What’s the price range for 1966 GMC L3500 Performance and Racing Products?
Performance and Racing Product prices for the 1966 GMC L3500 start at $53.99 and go up to $539.99 for the most premium parts.
What’s the average price of a Performance and Racing Product for a 1966 GMC L3500?
The average price for Performance and Racing Products for the 1966 GMC L3500 is $252.35. Keep in mind the variety of part types within our Performance and Racing Product category so you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Performance and Racing Products for other GMC L3500 model years?
What are the cheapest Performance and Racing Products for my 1966 GMC L3500?
The cheapest 1966 GMC L3500 Performance and Racing Products we carry in stock are:
- Thermocap Radiator Cap (6900022) – $53.99
- Thermocap Radiator Cap (10648711) – $56.99
- Unilite Ignition Module (17350025) – $95.99
- Flexplate for 168 tooth, 2-Piece Rear Main Seal, Chevy V8 (17130003) – $173.99
- Promaster Classic Series; Ignition Coil (17350082) – $204.99
What are the top-rated Performance and Racing Products that fit the 1966 GMC L3500?
Out of 88 reviews by customers, our 1966 GMC L3500 Performance and Racing Products have an average customer rating of . These are some of the highest-rated Performance and Racing Product types for the 1966 GMC L3500 and their top-rated products:
- Performance Ignition Products
- Unilite Ignition Module (17350025) – $95.99
- Performance Radiators
- Unilite Ignition Module (17350025) – $95.99
What types of Performance and Racing Products do you sell for my 1966 GMC L3500?
As of 6/2/26, these are some of the most in-demand types of Performance and Racing Products for a 1966 GMC L3500:
Can I get help with 1966 GMC L3500 Performance and Racing Product orders?
Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about GMC Performance and Racing Products and more.
What is your return policy for GMC L3500 Performance and Racing Products?
Advance Auto Parts keeps returns simple. For new GMC L3500 Performance and Racing Products and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.
