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Powerglide (PG)
2-speed
Lightweight, simple, and durable—favored in drag racing and vintage GM applications. Verify case length and tailhousing for swaps.
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Identification • Applications • Shopping
Identify Your Transmission
Quickly identify your transmission by family, years, and gear count. Compare bolt patterns, see common applications, and jump straight to the right parts or complete remanufactured units. Built in the Monster style for speed, clarity, and conversions.
GM Transmissions
From classic Powerglide to late-model 4L-series, use gear count, years, and bellhousing bolts to ID your unit and shop compatible builds.
TH200 / 200C
3-speed
Compact 3-speed used in smaller GM cars. For upgrades or overdrive swaps, consider 200-4R or 700R4 families.
200-4R
4-speed OD
Popular overdrive swap with multi-pattern bellhousing. Great for G-body builds and highway drivability.
TH350 / 350C
3-speed
Classic 3-speed workhorse. Identify vs TH400 by pan shape and case size; 350C adds lockup converter.
TH400
3-speed
High-torque 3-speed used in trucks and performance builds. Distinctive angled pan corner and larger case than TH350.
700R4 / 4L60 → 4L60E
4-speed OD
Mechanical (TV cable) early units vs electronically controlled 4L60E. Crossmember, wiring, and converter changes are required when mixing generations.
4L80E
4-speed OD
Big-power overdrive derived from TH400 architecture. Requires appropriate controller in carb swaps.
Ford Transmissions
From classic C-series to AOD/4R70W and E4OD, here’s how to tell them apart and buy with confidence.
Ford C4
3-speed
Ford A4LD
4-speed OD
Early Ford 4-speed OD common to Rangers/Explorers. Consider later 4R families for heavier use.
Ford C6
3-speed
Legendary strength for big-block and truck applications; pan is nearly rectangular with a notch.
AOD → AODE / 4R70W
4-speed OD
AOD uses TV linkage; AODE/4R70W are electronically controlled with stronger internals and wider ratios (’96+).
E4OD
4-speed OD
Chrysler / Dodge Transmissions
Classic TorqueFlite strength through modern overdrives—identify yours below and shop compatible builds.
904 / 998 / 999
3-speed
727 (A727)
3-speed
A500 (42RH/RE)
4-speed OD
Overdrive evolution of 904 family; RH = hydraulic/lockup, RE = electronic control.
A518 / A618 (46/47/48RH-RE)
4-speed OD
Big-torque OD units for trucks/SUVs (e.g., Ram). Verify RH/RE control type for swaps.
Transmission ID & Fitment – FAQs
How can I quickly tell 700R4 (4L60) from 4L60E?
700R4/early 4L60 use a TV cable and no main case wiring connector; 4L60E has a large round/gray electrical plug on the passenger side and requires an ECU/controller. Crossmembers and converters differ.
What’s the easiest way to ID a TH350 vs TH400?
Pan shape and case size: TH400 pan has a distinct angled corner and the case is larger/heavier. Output shaft and bolt patterns also differ.
Will an AOD swap into an AODE/4R70W vehicle (or vice-versa)?
Not directly. AOD uses TV linkage; AODE/4R70W are electronically controlled and require wiring, PCM/calibration, and often different converters/flexplates.
Do your transmissions include a torque converter?
Most Monster complete units include an appropriate converter; specific package contents are shown on each product page. Add a matched converter when required for best results.
Which fluid should I use?
Follow the product page and your vehicle service manual. Many older GM units were Dexron III/Mercon era; later electronic units commonly specify Dexron VI or Mercon variants. Always confirm for your exact build.
Do you offer warranty coverage?
Yes. Our standard warranty is included; you can optionally add MonsterCare Gold at checkout for enhanced labor/tow/rental coverage. See the Warranty page for terms.
Need help confirming fitment?
Call 800-708-0087 to talk to a product specialist, or send photos of your pan, bellhousing, and case casting numbers via our Contact page.
Automatic Transmission Families – Identification Guide
Identify GM, Ford, and Chrysler transmissions by gear count, years in production, and bellhousing bolt patterns. Shop remanufactured units, converters, and upgrade parts from Monster Transmission.