just pulled my 700 R4 trans what do yall think

[bucannon]

this sounds great!

the transmission will be going in the right way soon ill post pictures.




one question though? my speedometer was off by 10 mph before how how can i make sure this is not an issue with the new transmission. what speedo gear should i have?

ive got 33" tires with a 2.73 rear end gear ratio

[rfmaster]

Originally Posted by bucannon

this sounds great!

the transmission will be going in the right way soon ill post pictures.




one question though? my speedometer was off by 10 mph before how how can i make sure this is not an issue with the new transmission. what speedo gear should i have?

ive got 33" tires with a 2.73 rear end gear ratio

There are couple of online spedo gear calculators:

http://www.700r4.com/speedoCalc/speedocalc.shtml
http://www.tciauto.com/Products/Tech...eedo_gears.asp

I used to own a 74 malibu in my younger days and it is sad to see Classic Elky on JY....

//RF

[bucannon]

Originally Posted by rfmaster

There are couple of online spedo gear calculators:

http://www.700r4.com/speedoCalc/speedocalc.shtml
http://www.tciauto.com/Products/Tech...eedo_gears.asp

I used to own a 74 malibu in my younger days and it is sad to see Classic Elky on JY....

//RF

hey thanks that is what i needed.

[Captainfab]

If you're running 33" tires with a 2.73 gear, you aren't going to be able to use the OD in the 700R4 until a fairly high speed.

Originally Posted by bucannon

this sounds great!

the transmission will be going in the right way soon ill post pictures.




one question though? my speedometer was off by 10 mph before how how can i make sure this is not an issue with the new transmission. what speedo gear should i have?

ive got 33" tires with a 2.73 rear end gear ratio

[bucannon]

yea i know it sucks ha ha but i plan on finding a good set of rear gears soon.

while im on that subject, can i just pull the whole rear end out of a 88-98 truck, and bolt it in?

or will i have to change the spring and/or shock mounts up. also is the axel the same length?

[LONGHAIR]

The 2.73 gears and 33" tires are bad enough w/o overdrive. The only advantage that the 700r4 has is the lower 1st gear, this will help it not feel like a complete dud. Even at that the engine RPM should only be 1800 or so at 65MPH in 3rd gear/no OD.
Overdrive would be totally useless in a truck that is already geared waaay to high. To try to run at 70 MPH, the engine would only run 1350 RPM? It's just not going to do that very long, you will burn it up as it shifts back and forth not knowing where to settle.

[Captainfab]

The '88-'98 rear ends are about 1.5-2" wider than what you have now. I haven't checked the spring perches to see how they compare. They are probably wider since the frames are wider.

Originally Posted by bucannon

yea i know it sucks ha ha but i plan on finding a good set of rear gears soon.

while im on that subject, can i just pull the whole rear end out of a 88-98 truck, and bolt it in?

or will i have to change the spring and/or shock mounts up. also is the axel the same length?