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Old 12-08-2018, 09:47 AM   #390
hatzie
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Join Date: Oct 2008
Location: Wentworth, NH
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Re: What can be said about the 4-speed New Process NV833 overdrive manual transmissio

Quote:
Originally Posted by Gregski View Post
So the transmission is fixed, it no longer makes the strange Chubaca noise, however it is not a quiet / silent transmission like a modern day Toyota one, ha ha, don't get me wrong it doesn't grind or rattle but it just kinda sounds like an 80s transmission ought to sound, even after a proper rebuild.

So do I like it? Short answer is not really.

Which transmission do I like better the NP833 or the Saginaw? The Saginaw by far. Why? it is a much more fun truck to drive, it is peppier. Compared, the NP833 feels like I am haulin a load of cement in the back, ha ha. Keep in mind this Saginaw came from a little Vega or a Monza so it was geared for less torque which makes it quicker rather than faster, I may be explaining this wrong, but you know what I mean.

So here is what I learned, so I will share / repeat (cause you all know this already)


GEARS-----NP833 RATIO-----SAGINAW RATIO

1st-------------3.09------------------3.50
2nd------------1.67------------------2.40
3rd------------ 1.00------------------1.65
4th-------------.73-------------------1.00

the bigger the RATIO number the quicker the truck in that gear (of course assuming the rear differential ratio stays the same as in my case it did, I did not run out and swap the rear end to the 4.11 gears, although yes I am thinking about it especially now that I have Overdrive again), so stay tunned
The A833 is tougher than the Saginaw but it's geared for long distance freeway driving.

I liked the Saginaw automobile 4 speeds' evenly spaced gears for daily driving in my first 1/2 ton, and the A-Body LeMans I had in high school, rather than the huge jump from 1st to 2nd like most truck transmissions. It'll last a long long time as long as you don't do burnouts and it's probably better for fuel mileage around town.

A Gear Vendors Overdrive on the A833 would allow you to split shift 1st or a Ranger under-drive would let you split shift 2nd but they're too bloody expensive for just one more gear.
__________________
1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8


RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.
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