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Help loss of power

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Dave'90K5

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First of all I'm new to the foram and very happy to have found this site!

Can anyone help me figure this out?

My K5 has a 350 sitting behind a stock drivetrain and axles. 3.73 gears.

The truck has no power. I underderstand that the 35's will rob tons on power from my stock set up but I don't even have a passing gear. It's like there is something wrong with the trans kick down? Is this true or is the tires my problem? Thanks!
 
35's and 3.73's and a OD tranny, the 35's are the power robbing issue with that gear ratio for the OD tranny.
 
So by this chart I need 4.56's

Do you think this will bring my passing gear back.. I'm just concerned cause I don't have much wheel speed when I wheelin in mud. I don't want to get stuck cause of the lack of wheel speed....
 
If this is mostly a DD, then IMO I'd go with the 4.56's or 4.88's. But if this is mostly a wheeler and will not see a lot of street use, I'd go with 5.13's.
 
Thanks for your help. This is just a trail rig my dad and I have. I trying to iron out some of the bugs in our build. Other then the loss in power from the 3.73 gears and 35's do you think there is any harm to the Trans if we wheel it as is for a bit? until we get the $ to change the gears
 
Thanks for the info - Muddy


If anyone else has any input I'm all ears?
 
i think they hit the info pretty accurately. when wheelin...unless you really need the wheelspin i would probably stay in low when possible. it really takes the strain off of your transmission. you said it was a trail rig, but if it ever sees highway use i would recommend a tranny oil cooler.
 
Like matt says put it in low. Also it wouldn't hurt to run some seafoam through, or pull the intake. You would be surprised on how much carbon and be hiding under there. I noticed a huge difference after cleaning all the carbon out.
 
i got a 700 r-4 transmission 3.73 and 35's and wheel spin is no problem for me just ask my freinds who try to drive behind me on a muddy road. i cover there whole front end to the point they drive blidnly lmfao whicg of course right now my truck sits broke in the driveway with broken spider gear teeth soo... yea
 
chvymudin3388 said:
i got a 700 r-4 transmission 3.73 and 35's and wheel spin is no problem for me just ask my freinds who try to drive behind me on a muddy road. i cover there whole front end to the point they drive blidnly lmfao whicg of course right now my truck sits broke in the driveway with broken spider gear teeth soo... yea
Click to expand...


Do you think it could be my trans kick down is out of wack? I will try the 4 low thing... I don't realy think it makes much dif. cause in 2 wheel is just puts along... engine runs well and sounds like it is ready to race in neutral but put it in gear get those tires rolling and it falls short of power. not sure what to think?

Thanks for your input!
 
if you have absolutely no passing gear ie in 3rd and you floor it and it doesn't kick down into 2 its out of wack. Or your tranny is screwed.
 
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