200R4 Transmission for Sale | OEM Used GM TH200-4R 4-Speed Automatic
$1,999.00
At a Glance
- Condition: OEM used, all 4 forward gears shift-tested
- Availability: In stock, GM TH200-4R 4-speed automatic with overdrive available
- Shipping: Free shipping to all 50 states via freight pallet, 5 to 10 business days
- Bellhousing pattern verified (BOP, Chevy, or Dual-Pattern)
- Donor vehicle confirmed (Grand National, Monte Carlo SS, Olds 442, Camaro, etc.)
- Code stamp documented (BRF, KZF, etc.)
- All 4 forward gears shift-tested
- Overdrive function verified
- Torque converter function checked (stall and lockup)
- 2nd gear band condition documented
- Valve body condition assessed
- TV cable interface verified
- 100% inspection before every order ships
- No core charge, keep your old transmission
- Backed by a 15 day replacement warranty against internal defects
Description
About the 200R4 Transmission
Looking for a reliable transmission upgrade for your classic GM muscle car or hot rod project? Consider the used 200R4 transmission for sale at Part Nests. Renowned for its dual-pattern bellhousing that fits both Buick / Oldsmobile / Pontiac (BOP) and Chevrolet V8 engines, the 200R4 is the most versatile GM 4-speed automatic for swap projects. This 200R4 transmission for sale offers smooth shifts, efficient power delivery thanks to its 0.67:1 overdrive, and the ability to bolt to almost any older GM V8 engine. Whether you are restoring a 1984 Buick Grand National to factory spec, swapping an overdrive into a 1970 Chevelle, or building a Pontiac Trans Am with modern highway gearing, the 200R4 is the answer.
Transmission Overview: The GM TH200-4R
Our used 200R4 transmission (officially the GM TH200-4R, often called just 200R4 or 200-4R) is a versatile option compatible with various General Motors vehicles from the 1980s and early 1990s. It is a popular choice known for its durability, smooth performance, and unique dual-pattern bellhousing design. With its compact size, robust build quality, and standout dual-pattern feature, the 200R4 is suitable for a range of applications, from classic car restorations to modern vehicle swap projects.
The 200R4 Signature Feature: Dual-Pattern Bellhousing
This is the single most important fact about the 200R4 that sets it apart from other GM transmissions:
The 200R4 has BOTH Buick / Oldsmobile / Pontiac (BOP) AND Chevrolet bellhousing bolt patterns drilled into the same case. This means a single 200R4 transmission can bolt directly to:
- Chevy small-block V8 (302, 305, 327, 350, 400)
- Chevy big-block V8 (396, 402, 427, 454)
- Buick V6 (231, 252, 3.8 Turbo)
- Buick V8 (350, 455)
- Oldsmobile V8 (350, 403, 455)
- Pontiac V8 (301, 350, 400, 455)
This dual-pattern design is the 200R4 biggest selling point as a swap transmission. The 700R4 / 4L60 is Chevy-pattern ONLY, it will NOT bolt to a BOP V8 without an adapter plate. The 200R4 fits all four GM divisions natively.
Do Not Confuse the 200R4 with Similar-Sounding Transmissions
Three GM transmissions get confused with the 200R4. Here is how to tell them apart:
| Transmission | Description | Use Case |
|---|---|---|
| TH200 | 3-speed automatic, NO overdrive, smaller case | 1976-1987 light-duty GM passenger cars (different unit) |
| TH200-4R / 200R4 | 4-speed automatic WITH overdrive (this listing) | 1981-1990, dual BOP and Chevy pattern |
| 700R4 / 4L60 | 4-speed automatic WITH overdrive, larger case | 1982-1992, Chevy pattern only, higher torque capacity |
| 4L60E | Electronic version of 4L60 (formerly 700R4) | 1993 plus, ECM-controlled |
If you are searching for a 200R4 and someone is selling you a TH200 or 700R4, these are different transmissions with different gearing, different physical sizes, and different bellhousing patterns. Verify before buying.
GM Muscle Car and Truck Drivetrain Pairing
The 200R4 (this listing) is the GM 4-speed automatic with overdrive featuring dual BOP and Chevy bellhousing patterns, used in 1980s and early 1990s GM rear-wheel-drive applications. For complete GM drivetrain context across our catalog: the modern electronic successor to the 700R4 / 4L60 lineage is the GM 4L60E electronic 4-speed automatic (our listing, electronically controlled 4-speed automatic built on the proven 700R4 architecture with 0.70:1 overdrive 4th gear and lock-up torque converter, 360 lb-ft factory torque rating, used 1993-2006 across Silverado / Sierra / Tahoe / Suburban / Camaro / Firebird / Corvette / Roadmaster / Caprice). The 4L60E is the modern ECM-controlled GM RWD automatic that replaced the hydraulic 700R4 for 1993 plus applications, though buyers should note: the 4L60E is Chevy-pattern only (NOT dual-pattern like this 200R4 listing), so 4L60E swaps into BOP V8 engines require an adapter plate. For classic muscle car manual transmission alternatives, the Muncie M22 Rock Crusher 4-speed manual (our listing, heavy-duty M22 close-ratio variant with straight-cut helical gears producing the characteristic Rock Crusher whine, 2.20:1 first / 1.64:1 second / 1.27:1 third / 1.00:1 fourth ratios, 1-1/8 inch diameter input shaft, 26-spline input and 32-spline output, cast iron case, originally engineered for the highest-output big block applications including the 1970-1972 LS6 454 Chevelle SS and 1971-1972 LS6 Corvette) is the iconic GM muscle car manual transmission for period-correct restoration projects. For Chrysler / Mopar HD automatic comparison, the Chrysler 48RE 4-speed heavy-duty automatic with overdrive (our listing, built at Chrysler Kokomo Transmission Plant in the Torqueflite 727 family lineage, 460-475 lb-ft stock capacity, used 2003-2007 behind 5.9 Cummins HPCR in Ram 2500 / 3500) is the comparable cross-OEM heavy-duty 4-speed automatic with overdrive from the Mopar side. Three GM rear-wheel-drive automatic options: 200R4 this listing for dual-pattern BOP + Chevy swap flexibility 1981-1990; 4L60E for Chevy-pattern electronic modern; cross-OEM 48RE for heavy-duty Mopar HD truck duty.
Performance and Benefits of the 200R4
When you choose our used 200R4 transmission for sale, you are investing in a transmission known for its reliability, versatility, and overdrive efficiency. Here is what makes the 200R4 stand out:
- Improved Fuel Efficiency: The 200R4 0.67:1 overdrive feature helps reduce engine RPM at highway speeds by approximately 33%, significantly improving your vehicle fuel economy and reducing engine wear.
- Smooth Shifting: Experience seamless gear changes thanks to GM refined torque converter and clutch pack design.
- Compact and Lightweight: At only 150 lbs dry, the 200R4 is significantly lighter than the 700R4 (around 170 lbs) and considerably lighter than the TH400 (around 135 lbs but no overdrive).
- Overdrive Capability: The 0.67:1 fourth gear overdrive is one of the deepest GM factory overdrives, dropping highway RPMs dramatically.
- Compact Design: Its 27.75 inch overall length makes it versatile and compatible with a wide range of vehicle tunnel configurations, including older muscle cars without major modifications.
- Versatility: Suitable for both performance upgrades and restoration projects, catering to diverse automotive needs effectively.
Famous 200R4 Factory Applications
The 200R4 is iconic for being the factory transmission behind some of the most legendary 1980s GM performance cars:
The Buick Grand National Era (1984 to 1987):
The Buick Grand National, the all-black turbocharged Buick Regal that defined 1980s domestic performance, used a heavy-duty 200R4 (BRF or BQ code variant) with reinforced internals to handle the 3.8L turbo V6 substantial torque. The 1987 Buick GNX (a special-edition Grand National) made 276 HP and 360 lb-ft factory, all routed through a beefed-up 200R4. This single application drives a huge portion of 200R4 demand today.
Other Iconic 1980s G-Body Performance:
- Monte Carlo SS (1983-1987), the aero-bodied 305 H.O. V8 Monte Carlo
- Oldsmobile 442 (1985-1987), G-body 442 with 307 V8 and 200R4
- Hurst Olds (1983-1988), limited-edition 4-4-2 variant
- Pontiac Grand Prix 2 plus 2, aero-bodied performance Pontiac
- Pontiac Trans Am (selected applications), Firebird F-body
Light-Duty Truck and SUV:
- Various small-block 305 / 350 GM trucks
- S-10 Blazer / Jimmy with V6
- Some Suburban applications
Performance Variants Are Special:
Not all 200R4s are created equal. The BRF code transmission used in the Grand National was specifically reinforced with stronger materials and is the most sought-after factory 200R4 for performance applications. When buying a used 200R4, the code stamp on the transmission identifies the specific variant.
Compatibility of 200R4 Transmission
VEHICLE APPLICATIONS:
- Chevrolet Camaro (1982-1990 various)
- Chevrolet Corvette (1981-1984 some applications)
- Chevrolet Caprice (1981-1990)
- Chevrolet Monte Carlo / Monte Carlo SS (1981-1988)
- Buick Regal (1981-1987)
- Buick Grand National (1984-1987), the iconic application
- Buick GNX (1987 special)
- Oldsmobile Cutlass (1981-1988)
- Oldsmobile 442 (1985-1987 G-body)
- Hurst Olds (1983-1988)
- Pontiac Firebird / Trans Am (1981-1990 various)
- Pontiac Grand Prix 2 plus 2 (1986)
- Various GM light-duty truck and SUV applications
ENGINE COMPATIBILITY (Dual Bellhousing Pattern):
- Small-block Chevy V8 (305, 350)
- Big-block Chevy V8 (396, 454)
- Buick V6 (3.8L / 231 V6, including Grand National 3.8 Turbo)
- Buick V8 (350, 455)
- Oldsmobile V8 (307, 350, 403, 455)
- Pontiac V8 (301, 350, 400, 455)
The 200R4 universal bellhousing pattern is its key advantage over the 700R4 for muscle car restoration and swap projects.
Why the 200R4 is the Ultimate GM Muscle Car Swap Transmission
For owners of older GM muscle cars built before factory overdrive transmissions (1960s and 1970s vehicles with TH350, TH400, or Powerglide), swapping to a 200R4 provides:
- 30% lower highway RPM (from typical 3.42 or 3.73 rear gear with no overdrive to overdrive cruise)
- Better fuel economy, especially noticeable on cross-country trips
- Reduced engine wear at highway speeds
- Direct bolt-up to BOP V8s (no adapter plate required, unlike the 700R4)
- Modest cost compared to modern 4L80E or 6L80 swaps
The 200R4 is also a popular base for high-performance builds. Aftermarket builders like Bowtie Overdrives, Lonnie Performance, and Monster Transmission offer 800 plus HP capable 200R4 builds for $3,500 to $6,500 plus.
Vehicle Compatibility
| Vehicle | Compatibility |
|---|---|
| Buick Grand National (1984 to 1987) | The iconic 200R4 application; uses BRF-code heavy-duty variant |
| Buick GNX (1987 special edition) | High-output variant of Grand National |
| Buick Regal Turbo / T-Type | 3.8 Turbo V6 applications |
| Monte Carlo SS (1983 to 1987) | 305 H.O. V8 G-body |
| Hurst Olds (1983 to 1988) | Limited-edition Oldsmobile 442 variant |
| Oldsmobile 442 (1985 to 1987) | G-body 442 with 307 V8 |
| Chevrolet Camaro / Pontiac Firebird | F-body 1982 to 1990 various |
| Pontiac Trans Am | F-body performance variant |
| Chevrolet Caprice / Buick Regal / Olds Cutlass | B-body and G-body applications |
| Chevrolet Corvette (1981 to 1984) | Some small-block 350 applications |
| GM Light-Duty Trucks | S-10 Blazer, Jimmy, and other light-duty truck applications |
Why Buy From Part Nests
- Bellhousing pattern correctly verified (BOP, Chevy, or dual)
- Code stamp identification (Grand National BRF variants identified)
- All 4 gears shift-tested before shipping
- Overdrive function verified
- Honest differentiation from TH200 (3-speed) and 700R4 (Chevy-only)
- Donor vehicle history documented
- Free freight pallet delivery to all 50 states
- 15 day replacement warranty on internal defects
- GM muscle car experienced support team
- Aftermarket build recommendation available for performance applications
- Call (855) 634-4447 to verify the right part for your vehicle before ordering.
15 Day Replacement Warranty
Every used GM TH200-4R 4-speed automatic transmission purchased through Part Nests carries a 15 day replacement warranty starting on the delivery date.
What Is Covered
- Internal defects already present when the transmission arrives
- Gear failures within 15 days from installation on any of the 4 forward gears or reverse
- Overdrive (4th gear 0.67:1) function failures within 15 days from installation
- 2nd gear band failures within 15 days from installation (where condition was documented as serviceable at shipping)
- Torque converter failures within 15 days from installation (stall and lockup function, where condition was documented as functional at shipping)
- Valve body failures within 15 days from installation
- TV cable interface failures within 15 days from installation
- Output shaft and yoke spline failures within 15 days from installation
- Case crack failures not disclosed at shipping
- Bellhousing dual-pattern mismatch (BOP, Chevy, or dual-pattern shipped incorrectly versus documentation) due to an error on our end
- Incorrect code stamp shipped (BRF Grand National heavy-duty variant mismatch where code was documented) due to an error on our end
What Is Not Covered
- Damage caused during installation
- Damage from incorrect transmission fluid (Dexron III recommended for original specifications; using Dexron VI or non-GM compatible fluid may damage friction materials)
- Damage from extended fluid service intervals
- Damage from incorrect TV cable adjustment (the 200R4 TV cable controls line pressure and downshift timing; incorrect adjustment causes burnt clutches within minutes of operation; aftermarket adjustable cables recommended for swap applications)
- Damage from operating with cooler line restrictions or contaminated fluid
- Damage from torque converter contamination from prior failures (contamination spreads metal particles throughout the entire transmission)
- Damage from operating beyond stock torque capacity (factory rating approximately 350 lb-ft for standard variants, 400 plus lb-ft for BRF Grand National heavy-duty variant; modified applications require aftermarket bulletproofing including triple-disc torque converter / reinforced clutch packs / revised valve body)
- Damage from incorrect engine pairing (verify bellhousing pattern matches engine; BOP V8 requires BOP-pattern or dual-pattern 200R4; Chevy V8 requires Chevy-pattern or dual-pattern 200R4)
- Damage from aftermarket performance modifications beyond approximately 500 lb-ft without supporting transmission upgrades
- External components (torque converter if separately documented as serviceable, transmission cooler lines, driveshaft, crossmember, TV cable assembly, fluids drained for transit) unless itemized
- Labor expenses of any kind
To start a warranty claim, reach us within 15 days of delivery at (855) 634-4447.
- All 4 Gears Shift-Tested: Plus reverse engagement verified
- Bellhousing Pattern Verified: BOP, Chevy, or Dual-Pattern correctly identified
- Code Stamp Documented: BRF Grand National heavy-duty variant or other code identified
- Overdrive Function Verified: 0.67:1 fourth gear function tested
- 2nd Gear Band Condition Documented: Known wear point assessed
- 15 Day Replacement Cover: Internal defects protected from delivery onward
Additional information
| bellhousing-to-tailshaft-length | 27 inches |
|---|---|
| fluid-capacity | 6 to 7 quarts |
| fluid-type | Dexron III ATF |
| gear-ratios | 1st 2.74:1, 2nd 1.57:1, 3rd 1.00:1, 4th 0.67:1 (overdrive) |
| reverse-ratio | 2.07:1 |
| input-shaft-spline-count | 27 splines |
| output-shaft-spline-count | 27 splines |
| overall-length | 27.75 inches (27-3/4 inches) |
| stock-torque-rating | Up to 400 lb-ft (Grand National BRF variant) |
| aftermarket-built-capacity | 600 to 900 plus lb-ft achievable |
| weight | 150 lbs (dry) |
| type | Automatic, 4-speed with overdrive |
| bellhousing-pattern | DUAL: Buick / Oldsmobile / Pontiac (BOP) AND Chevrolet |
| manufacturer | General Motors / Turbo Hydra-Matic |
| model | THM200-4R (200R4 / 200-4R) |
| family | GM Turbo Hydra-Matic 200 family (4-speed overdrive variant) |
| production-years | 1981 to 1990 |
| successor | 4L60 / 4L60E (Chevy-pattern only, no BOP compatibility) |
| compatibility | 1981 to 1990 GM passenger car, truck, and SUV applications |
| Brand | GM |
GM TH200-4R 4-speed automatic with overdrive and dual-pattern bellhousing. The 200R4 (officially the GM TH200-4R, often called just 200R4 or 200-4R) is a 4-speed automatic transmission with overdrive used in various General Motors vehicles from the 1980s and early 1990s. Features: 4-speed automatic with overdrive, 0.67:1 fourth gear overdrive (one of the deepest GM factory overdrives reducing highway RPM by approximately 33%), 150 lbs dry weight (lighter than 700R4 at approximately 170 lbs and TH400 at approximately 135 lbs but no overdrive), 27.75 inch overall length, dual-pattern bellhousing with BOTH Buick / Oldsmobile / Pontiac (BOP) AND Chevrolet bolt patterns drilled into the same case (the 200R4 signature feature and biggest advantage over the 700R4 / 4L60 which is Chevy-pattern ONLY). The 200R4 fits all four GM divisions natively, making it the most versatile GM 4-speed automatic for swap projects.
Both BOP and Chevy bolt patterns drilled into the same case. The 200R4 signature feature is dual-pattern bellhousing with BOTH Buick / Oldsmobile / Pontiac (BOP) AND Chevrolet bellhousing bolt patterns drilled into the same case. This means a single 200R4 transmission can bolt directly to: Chevy small-block V8 (302, 305, 327, 350, 400), Chevy big-block V8 (396, 402, 427, 454), Buick V6 (231, 252, 3.8 Turbo), Buick V8 (350, 455), Oldsmobile V8 (350, 403, 455), Pontiac V8 (301, 350, 400, 455). This dual-pattern design is the 200R4 biggest selling point as a swap transmission. The 700R4 / 4L60 is Chevy-pattern ONLY (it will NOT bolt to a BOP V8 without an adapter plate). The 200R4 fits all four GM divisions natively, which is why it remains popular for muscle car restoration and BOP V8 swap projects despite being out of production since 1990.
Three GM transmissions get confused with the 200R4. TH200 (3-speed automatic with NO overdrive, smaller case, used in 1976-1987 light-duty GM passenger cars): a DIFFERENT unit with no overdrive function, different physical dimensions, and only one bellhousing pattern. The TH200 name is similar but the transmission is unrelated. TH200-4R / 200R4 (this listing): 4-speed automatic WITH overdrive, dual BOP and Chevy pattern, produced 1981-1990. 700R4 / 4L60 (4-speed automatic with overdrive, larger case, higher torque capacity, used 1982-1992): Chevy-pattern ONLY, requires adapter plate for BOP V8. 4L60E (electronic version of 4L60, formerly 700R4, used 1993 plus): ECM-controlled, modern GM RWD automatic that replaced the 700R4 for 1993 plus applications. If you are searching for a 200R4 and someone is selling you a TH200 or 700R4, these are different transmissions with different gearing, different physical sizes, and different bellhousing patterns. Verify the model designation and bellhousing pattern before buying.
Grand National heavy-duty reinforced 200R4. Not all 200R4s are created equal. The BRF code transmission was specifically reinforced with stronger materials for the 1984-1987 Buick Grand National application and is the most sought-after factory 200R4 for performance applications. The Buick Grand National (the all-black turbocharged Buick Regal that defined 1980s domestic performance) used a heavy-duty 200R4 with reinforced internals to handle the 3.8L turbo V6 substantial torque. The 1987 Buick GNX (a special-edition Grand National) made 276 HP and 360 lb-ft factory, all routed through a beefed-up BRF-coded 200R4. This single application drives a huge portion of 200R4 demand today. Other 200R4 code variants include BQ (another HD variant used in some Grand National applications), KZF (standard variant), and various other code stamps for different vehicle applications. When buying a used 200R4, the code stamp on the transmission identifies the specific variant and the factory torque capacity rating.
1980s GM rear-wheel-drive performance cars and selected trucks / SUVs. Vehicle applications: Chevrolet Camaro (1982-1990 various), Chevrolet Corvette (1981-1984 some applications), Chevrolet Caprice (1981-1990), Chevrolet Monte Carlo / Monte Carlo SS (1981-1988 including the aero-bodied 305 H.O. V8 Monte Carlo SS 1983-1987), Buick Regal (1981-1987), Buick Grand National (1984-1987 the iconic application with BRF heavy-duty code), Buick GNX (1987 special edition with 276 HP / 360 lb-ft), Oldsmobile Cutlass (1981-1988), Oldsmobile 442 (1985-1987 G-body with 307 V8), Hurst Olds (1983-1988 limited-edition 4-4-2 variant), Pontiac Firebird / Trans Am (1981-1990 selected applications), Pontiac Grand Prix 2 plus 2 (1986 aero-bodied performance Pontiac), various GM light-duty truck and SUV applications (S-10 Blazer / Jimmy with V6, some Suburban applications, small-block 305 / 350 GM trucks). Engine compatibility through dual bellhousing pattern: Small-block Chevy V8 (305, 350), Big-block Chevy V8 (396, 454), Buick V6 (3.8L / 231 V6 including Grand National 3.8 Turbo), Buick V8 (350, 455), Oldsmobile V8 (307, 350, 403, 455), Pontiac V8 (301, 350, 400, 455).
Dual-pattern bellhousing plus deep overdrive plus compact dimensions. For owners of older GM muscle cars built before factory overdrive transmissions (1960s and 1970s vehicles with TH350, TH400, or Powerglide), swapping to a 200R4 provides: 30% lower highway RPM (from typical 3.42 or 3.73 rear gear with no overdrive to overdrive cruise), better fuel economy especially noticeable on cross-country trips, reduced engine wear at highway speeds, direct bolt-up to BOP V8s with no adapter plate required (unlike the 700R4 which requires adapter plates for BOP applications), modest cost compared to modern 4L80E or 6L80 swaps. The 200R4 27.75 inch overall length fits most older muscle car tunnel configurations without major modifications. The 200R4 is also a popular base for high-performance builds: aftermarket builders like Bowtie Overdrives, Lonnie Performance, and Monster Transmission offer 800 plus HP capable 200R4 builds for $3,500 to $6,500 plus, making the 200R4 suitable even for substantially modified engines.
Three GM RWD automatic options across different eras and applications. The 200R4 (this listing) is the GM 4-speed automatic with overdrive featuring dual BOP and Chevy bellhousing patterns, used in 1981-1990 GM rear-wheel-drive applications. The GM 4L60E is the modern electronic 4-speed automatic with overdrive built on the proven 700R4 architecture (0.70:1 overdrive 4th gear, lock-up torque converter, 360 lb-ft factory torque rating, used 1993-2006 across Silverado / Sierra / Tahoe / Suburban / Camaro / Firebird / Corvette / Roadmaster / Caprice). The 4L60E is the modern ECM-controlled GM RWD automatic that replaced the hydraulic 700R4 for 1993 plus, though note: the 4L60E is Chevy-pattern only (NOT dual-pattern like this 200R4 listing), so 4L60E swaps into BOP V8 engines require an adapter plate. For classic muscle car manual transmission alternatives, the Muncie M22 Rock Crusher is the iconic GM muscle car 4-speed manual (heavy-duty M22 close-ratio with straight-cut helical gears, originally engineered for highest-output big block applications including LS6 454 Chevelle SS and LS6 Corvette). For Chrysler / Mopar HD automatic comparison, the Chrysler 48RE is the cross-OEM 4-speed heavy-duty automatic with overdrive (Torqueflite 727 family lineage, 460-475 lb-ft stock capacity, used 2003-2007 behind 5.9 Cummins HPCR in Ram 2500 / 3500).
No. There is no core return required. Keep your old transmission.
2 reviews for 200R4 Transmission for Sale | OEM Used GM TH200-4R 4-Speed Automatic
Related products
Augustus K. –
Got a BRF-coded 200R4 for a 1987 Buick Grand National restoration (the iconic 1984-1987 Buick Grand National application with BRF or BQ code heavy-duty variant featuring reinforced internals to handle the 3.8L turbo V6 substantial torque). Bellhousing pattern verified as dual-pattern (BOP and Chevy, the 200R4 signature feature), donor vehicle confirmed as Buick Grand National (matching destination, BRF Grand National heavy-duty reinforced code variant the most sought-after factory 200R4 for performance applications), code stamp documented as BRF (NOT KZF standard variant or BQ alternative), all 4 forward gears shift-tested, overdrive function verified (0.67:1 fourth gear function one of the deepest GM factory overdrives reducing highway RPM by approximately 33%), torque converter function checked (stall and lockup tested), 2nd gear band condition documented, valve body condition assessed, TV cable interface verified (critical for proper shift timing and downshift control). Honest pre-purchase information about the NOT-200R4 similar-sounding transmissions to verify (TH200 3-speed automatic with NO overdrive used in 1976-1987 GM passenger cars is a DIFFERENT unit, 700R4 / 4L60 4-speed with overdrive but Chevy-pattern ONLY requiring adapter plate for BOP V8 engines, 4L60E electronic version per vaz151 for 1993 plus applications) and the GM drivetrain pairing context (4L60E per vaz151 modern ECM-controlled GM RWD automatic replacement for 1993 plus, M22 Rock Crusher per vaz168 classic muscle car manual transmission alternative, 48RE per vaz196 cross-OEM Chrysler heavy-duty 4-speed automatic comparison).
Quintessa A. –
Sourced a dual-pattern 200R4 for a 1972 Chevelle overdrive swap project (the muscle car swap application benefiting from the 0.67:1 overdrive for 30% lower highway RPM, better fuel economy, reduced engine wear at highway speeds). Bellhousing pattern verified as dual-pattern (both BOP and Chevy bolt patterns drilled into the same case), donor vehicle identified, code stamp documented as KZF standard variant (matching the destination Chevelle small-block 350 application that does not require BRF Grand National HD reinforcement), all 4 gears shift-tested, overdrive function verified, compact 27.75 inch overall length confirmed to fit the muscle car tunnel without major modifications. Honest pre-purchase information about the dual-pattern bellhousing advantage (single 200R4 fits Chevy small-block V8, Chevy big-block V8, Buick V6 including 3.8 Turbo, Buick V8 350 / 455, Oldsmobile V8 307 / 350 / 403 / 455, Pontiac V8 301 / 350 / 400 / 455 natively without adapter plates unlike the 700R4 Chevy-pattern only) and the aftermarket build path (800 plus HP capable 200R4 builds available from Bowtie Overdrives, Lonnie Performance, and Monster Transmission for $3,500 to $6,500 plus making the 200R4 suitable even for substantially modified engines).