4 speed

[M-100]

So what are the differences between np435 , t18, t19.

[eggman918]

I have ran both the 435 and t-19 close ratio and the 435 is a 3 speed with a granny low non synchronized 1st
the T-19 is a close ratio 4 speed with first gear synchronized with a 4-1 ratio
I can only speak to those two

[M-100]

So are you saying the t19 can be driven like a regular 4 speed

[eggman918]

Yes the T-19 close ratio is a ideal trans for a street truck that will still need to do a days work from time to time
its ratios are 4-1/2.4-1/1.4-1/1-1 add a ranger or other OD and its very close to the M5odr2's ratios

[Red Mercury]

Yes the T-19 close ratio is a ideal trans for a street truck that will still need to do a days work from time to time
its ratios are 4-1/2.4-1/1.4-1/1-1 add a ranger or other OD and its very close to the M5odr2's ratios

I agree about the T-19 having a close ratio (4.02:1 1st gear). In case the original poster doesn't realize it the T-19 was available with 3 different 1st gear ratios. They were 4.02:1, 5.11:1, or 6.32:1. So you could still have one with a "granny low" but it would also be synchronized. I would have to do some digging, but the if my memory is correct, the 4.02:1 was used with 1980's diesels and the 5.11:1 and 6:32:1 were used behind the gas engines.

The T-18 is very similar to the NP435 in that they both have a non-synchronized "granny low" 1st gear. There are some slight ratio differences between the T-18 and NP435. The Novak Conversions website has some good information about the different transmissions. Here is the link:
https://www.novak-adapt.com/knowledge/t ... ns/manual/

[eggman918]

The T-19 med ratio is 5.11-1/3.03-1/1.79-1/1-1
The wide ratio is 6.32-1/3.09-1/1.69-1/1-1

[mrtleavitt]

FYI- This combo is awesome for a street truck that never tows:

428FE, T19 with 4.02 1st gear, 3.00 ring and pinion, 31" tires.

My brother's setup that works pretty good is the 390/445FE stroker, T19 5.11 1st gear, 2.75 ring and pinion, 29.5" tires.