More th700 problems

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jetdoc

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Apr 20, 2011
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Location
Nor Cali
First Name
Rick
Truck Year
1985
Truck Model
k1500
Engine Size
350/TH700/NP208C
Wats up guys i got a 85 k1500 and trying to get more info on the trk and components,figured out its th700 but where does the r4 come from? also chkd oil is good not discolored so i am assuming every thing is kosh but what i cant figure out is why it shifts so hard from 1 to 2 dont have a tach but the r"s are hi. i saw a previous post showing a modulator adjustment but this has a switch looking thing and a round looking kind of canister on the pax side if theres a quick fix i would apriciate the advice thanks!
 

jetdoc

Junior Member
Joined
Apr 20, 2011
Posts
20
Reaction score
3
Location
Nor Cali
First Name
Rick
Truck Year
1985
Truck Model
k1500
Engine Size
350/TH700/NP208C
Pulled out the chiltons,it helps to read the dam manual little confused on the (TV) adjust but finally figured it out the dam cable was out of adjustment!!!! thing shifts nicely now !!
 

HotRodPC

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OKC, OK
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HotRod
Truck Year
85 K20 LWB
Truck Model
Silverado
Engine Size
454 - Turbo 400 - 3.73
10-4 Jetdoc. Sorry I missed your post earlier today or I woulda suggested that TV cable since the 700r4 does not have a vac modulator. The 700 and the r4 comes in for 4 speeds. Some say the R is for rear wheel drive, but I am honestly not so sure that is what its for. There is also a 200-4r and why they put the -4r instead of r4, I don't know.

Keep in mind, on the 700r4 its very important to have that TV cable adjusted properly. You can actually burn up the trans without having that hooked up and adjusted correctly.
 

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