1
1
1973-1987
CHEVY TRUCK TRANSMISSIONS
1
| RPO |
TRANSMISSION TYPE |
RATIOS |
ZW4 (73-80)
M15 (81-84)
MM3 (85-?)
All these were the same,
only code changed. |
3 Spd. Manual |
2.85, 1.68, 1.00 (350)
3.11, 1.84, 1.00 (305)
3.50, 1.89, 1.00 (250) |
M62
M64 |
3 Spd. Manual 76mm
3 Spd. Manual 76mm |
N/A
N/A |
M20 (Muncie) (73-83)
MM4 (84-?)
Both were same, only
code changed. |
4 Spd. Manual |
6.55, 3.58, 1.70, 1.00 |
MY6
MM7 |
4 Spd. Manual w/O.D. 89mm |
3.09, 1.67, 1.00, .73 |
| M38 (TH350)
MV4 (TH350C)
MX1 also used. |
3 Spd. Auto
3 Spd. Auto w/lockup TCC
|
2.52, 1.52, 1.00
2.52, 1.52, 1.00
|
| M40 (TH400)
MX1 also used. ? |
3 Spd. Auto |
2.48, 1.48, 1.00 |
MD8 (TH700R4)
or
MX0 |
4 Spd. Auto w/O.D. |
3.06, 1.63, 1.00, .70 |
1973-1987
CHEVY TRUCK ENGINES
1
| RPO |
DISPLACEMENT (ci)/CONFIGURATION |
HP |
TORQUE |
| LD4 |
250/I-6 |
105 |
185 |
| LE3 |
250/I-6 |
130 |
210 |
| LB1 |
262/V-6 |
155 |
230 |
| LB4 |
262/V-6 (TBI) |
155 |
230 |
| L25 |
292/I-6 |
120 |
215 |
| LE9 |
305/V-8 (Non CA) |
160 |
235 |
| LF3 |
305/V-8 (Ca) |
155 |
240 |
| LG9 |
305/V-8 (2bbl) |
130 |
240 |
| LO3 |
305/V-8 (TBI) |
170 |
260 |
| LG8 |
307/V-8 (Non CA) |
130 |
220 |
| LS9 |
350/V-8 |
175 |
275 |
| LT9 |
350/V-8 |
160 |
260 |
| LO5 |
350/V-8 (TBI) |
210 |
300 |
| LH4 |
379/V-8 (Diesel) |
135 |
240 |
| LH6 |
379/V-8 (Diesel) |
135 |
240 |
| LL4 |
379/V-8 (Diesel) |
148 |
246 |
| LF4 |
400/V-8 (HD Emissions Only) |
185 |
300 |
| LE8 |
454/V-8 |
230 |
360 |
| LT9 |
454/V-8 (TBI) |
230 |
385 |
If you think
you see some things that may be wrong, please let
me know. I will do further research to make sure they are corrected.
All the above is correct to the best of my knowledge. But as with
any gathering of info, mistakes can be made.
Mike
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