Welcome to G.I. Motor Pool,
Home of the Military grade GV7MT (700R4) and Torque Drive 700R4 and 4L60E Transmissions. Our units are built to pure perfection by highly skilled transmission builders and come with a limited LIFETIME WARRANTY on all steel hard parts. These units were specially built for our 12,000 lb. gunner and rocket equipped Humvees, and has shown to be bullet proof for high horsepower street rod applications. The 700R4 was chosen for its high torque, low first gear and fourth gear overdrive.
All we build are military grade Chevy (700R4), 4L60E, 200R4, TH400,
TH350, and Torque Drive 700R4, and 4L60E transmissions. If you are looking for a transmission site that has all kinds of bells and whistles, offers you all kinds of transmissions with silly little names that have nothing to do with building a strong transmission and have little to no warranty. You're at the wrong site. At G.I. Motor Pool, we produce long-lasting, high torque transmissions that provide the performance you need with the quality you deserve, all backed by our LIFETIME WARRANTY on all steel hard parts. See Tech Notes
What is the 700R4?
The 700R4 can be identified by the oilpan having a rectangular shape being longer front-to-rear than side-to-side and held to the transmission by 16 bolts, 3 bolts front, 3 bolts rear, 5 bolts left side, and 5 bolts right side.
The tailshaft housing is held onto the main case by 4 bolts (the bolt spacing is similar to the THM350), and uses a square-cut o-ring seal, and not a gasket. The typical width of this transmission where it bolts to the engine is 20 inches (510 mm) overall. From the engine/trans mating surface to the crossmember mount bolt is 22-1/2 inches (570 mm), and engine/trans surface to output shaft housing mating surface is 23-3/8 inches (594 mm) overall, with the tailshaft housing typically measuring 7-5/8 inches (194 mm).
Transmission fluid cooler lines on the 700R4 the bottom fitting on the right side of the transmission is the "out" line to the cooler and the top fitting is for the return line from the cooler. These fittings are 1/4-inch pipe thread, and CAN include an adapter from the factory for threaded steel lines in a SAE size. 4L60Es manufactured after 1995 use the modern-day snap-in connections as opposed to threaded SAE fittings.
The original version of the transmission had a 27 spline input shaft which was a common failure point. In 1984, 700R4s designed for use behind Chevrolet small block V8s received a 30 spline input shaft which used a different torque converter than its 2.8 V6 and 2.2 L4 powerplants. Between 1984 - 1987, internal components, from the ring gear to the oil pump housing, were updated, ending with the auxiliary valve body (for 700s manufactured after October 1986).
In 1995 the 4L60E received a PWM-controlled lockup converter.
Around 1996, a bolt-on bellhousing was phased in (along with a six-bolt tailhousing) when the transmission was bolted behind an inline four cylinder or the Vortec engine family.
The gearing for the 700 is:
· First - 3.059
· Second - 1.625
· Third - 1.000
· Fourth - 0.696
· Reverse - 2.294
*(commonly rounded off to 3.06, 1.63, 1.00, 0.70, and 2.29).
Common 700R4 / 4L60 / 4L60E / 4L65E Applications:
1982- Chevrolet Blazer/GMC Jimmy
1982-2004 Chevrolet Corvette
1982-1996 Chevrolet Caprice
1983-2002 Chevrolet Camaro/Pontiac Firebird
1989-2003 Chevrolet Astro/GMC Safari
1991 GMC Syclone
1991-2003 Chevrolet S-10/GMC S-15/GMC Sonoma
1991-1996 Cadillac Fleetwood/Cadillac Brougham/Cadillac Limo
1992- Chevrolet TrailBlazer/GMC Envoy
1992-1993 GMC Typhoon
1992-2003 Chevrolet Suburban
1993-2003 Chevrolet Van
1994-1996 Chevrolet Impala
1994-1996 Buick Roadmaster
1995-2003 Chevrolet C/K
1995-2003 Chevrolet Tahoe/GMC Yukon
1999- Cadillac Escalade
2001- Chevrolet Avalanche
2004 Hummer H2
2004- Buick Rainier
2004- Chevrolet Colorado/GMC Canyon
2006- Hummer H3
2006- Holden VE Commodore
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