Gear Ratios of Popular GM Transmissions

Trans	1st Gear	2nd Gear	3rd Gear	4th Gear	Reverse
Powerglide	1.76/1.82	1.00	---	---	1.76/1.82
TH350	2.52	1.52	1.00	---	1.94
TH400	2.48	1.48	1.00	---	2.07
TH200-4R	2.74	1.57	1.00	0.67	2.06
TH700-R4	3.06	1.62	1.00	0.70	2.29
4L80E	2.43	1.49	1.00	0.75	2.07

Transmission Guidelines

Transmission Dimensions

Transmission Identification By Pan

1	Aluminum Powerglide	14 bolts
2	TH200 Metric	11 bolts
3	TH350	13 bolts
4	TH400	13 bolts
5	TH200-4R	16 bolts
6	TH700-R4, 4L60, 4L60E	16 bolts
7	4L80E	17 bolts

Identifying a TH200-4R vs. TH200

Photo of TH200-4R transmission

The TH200-4R is identified by 10 bolt holes and 2 dowel-pin locator holes on the universal bellhousing.  It has a dual bolt pattern for both Chevrolet and BOP (Buick, Olds, Pontiac) applications.  The TH200 has only six bolt holes and 2 dowel-pin holes.

4l80e	200r4	350

700r4	727	924
a4ld	a500	a518
aod	c4	c6
e40d	powerglide	th200
th400	chrysler14bolts	chrysler14bolts_b
ford11bolts	ford14bolts	ford17bolts
ford20bolts	gm11bolts	gm13bolts
gm13bolts_2	gm16bolts	gm16bolts_2

gm17bolts