Engine/Transmission (1994 - 1998) GSK and Stall speed

[Josparkz]

I recently had a 4k GSK put in my truck . I have been noticing that my truck is acting very sluggish about getting moving. It will rev up right now in neutral , but when it is in gear it is acting like the stall speed changed. It takes about 4 seconds to get from idle to 1600 rpm. Seems like it just doesn't want to rev up and get moving.

Anybody else encounter this when they put theirs in ?

Thanks.

 

[Jim Fulmer]

So from a stop, stand on it! What does the truck do.



Jim

 

[HoleshotHolset]

Governor lever adjustment.....



Chris Strickland (Strick-9) recently made a great post about how the GSK affects this. Do a search... .



Matt

 

[Josparkz]

Originally posted by HoleshotHolset

Governor lever adjustment.....



The governor lever appears to be hitting the plate right on the bottom, just as it is supposed to.

 

[Strick-9]

I see you have a #8 plate. Here is a copy of my post a few days ago.



This actually happens a lot when people install governor spring kits. Here's quick rundown of what happened.



The governor spring kits keep the flyweights from traveling outward at higher RPM. That's how it allows you to rev higher.



Well, if the flyweights don't move outward, the rocker can't move upward. They are linked together in the governor housing.



As the flyweights move outward, the rocker travels up the plate. Restricting one, restricts the other.



The smaller plates like the #12, #11 and #8 don't give a big increases at low RPM that's just how they're designed.



When the rocker is no longer allowed to travel UP the plate profile, it never gets to the heavy fueling region. It gets hung down lower on the plate profile where it doesn't give much fuel.



Make sense?



The #4 and #10 plates normally cure this problem because the heavy fueling regions on the plate are much lower in the profile. So even if your rocker is adjusted a little too low, it will still reach the heavy fueling region where you can make good power.



The easiest cure for the problem is the #4 or #10 plate. But to avoid spending money raise the governor lever adjustment and it will cure the problem. It's just a little hard to get to the first time.



Hope that helps you understand it a bit more.



-Chris

 

[Josparkz]

Originally posted by Jim Fulmer

So from a stop, stand on it! What does the truck do.



Jim

It moves very slowly until the rpms are up. I have a little ditch in front of my house where I occasionally park with an axle in it to get it closer to the ground. I did this while I( was changed my fan belt tensioner yesterday . I went to back out when I was done , 4-high , lockers engaged . It didn't want to budge . I went to 4-low and it walked right out . I never had a problem getting out of that ditch before , even pre-lockers , (at least not with the rear end).

It acting like it just didn't want to rev up and go.

 

[Josparkz]

Originally posted by Strick-9

I see you have a #8 plate. Here is a copy of my post a few days ago.



This actually happens a lot when people install governor spring kits. Here's quick rundown of what happened.



The governor spring kits keep the flyweights from traveling outward at higher RPM. That's how it allows you to rev higher.



Well, if the flyweights don't move outward, the rocker can't move upward. They are linked together in the governor housing.



As the flyweights move outward, the rocker travels up the plate. Restricting one, restricts the other.



The smaller plates like the #12, #11 and #8 don't give a big increases at low RPM that's just how they're designed.



When the rocker is no longer allowed to travel UP the plate profile, it never gets to the heavy fueling region. It gets hung down lower on the plate profile where it doesn't give much fuel.



Make sense?



The #4 and #10 plates normally cure this problem because the heavy fueling regions on the plate are much lower in the profile. So even if your rocker is adjusted a little too low, it will still reach the heavy fueling region where you can make good power.



The easiest cure for the problem is the #4 or #10 plate. But to avoid spending money raise the governor lever adjustment and it will cure the problem. It's just a little hard to get to the first time.



Hope that helps you understand it a bit more.



-Chris

Thank you for the good explanation .

I don't have the #8 in at this time . I have a plate someone ground out of a stock one , has kind of a reverse slope to it. It's intent was to get a whole lot more fuel a lot quicker than the #8. It seems to do this , perhaps too well.

I'm wondering if maybe the governor springs themselves need adjusting. If they are real tight , the engine will rev higher , correct ? Does this take something from the bottom end ? If I loosen them up , does it pick up on the bottom end , instead of the top ?

Thanks.

 

[Strick-9]

Tighter governor springs give more fuel throughout the RPM range. Loosening off on the governor housing will not increase your bottom end power.



Your plate may have given you more low end power than the #8, but when you installed the governor spring kit, the needs change. You now need a plate with MUCH more bottom end than before.



I've seen quite a few people take a stock plate and cut off a chunk. Basically cutting a straight line from the lower rear portion of the plate up to the where the profile ends. Is this how your plate was modified?



If so, that is still the problem. Since your rocker is not moving UPWARD now, it will not get to the deeper portions of the plate. You'll need a plate that basically drops off quicker. Looks similar to a shelf. #4 or #10 or something like those.



If you have room, just slide your plate forward a bit. If your bottom end gets noticeably stronger, than you know it's plate related. It's much easier to move the plate than it is to experiment with governor spring tension.



Good luck,

Chris

 

[Josparkz]

Originally posted by Strick-9

[BI've seen quite a few people take a stock plate and cut off a chunk. Basically cutting a straight line from the lower rear portion of the plate up to the where the profile ends. Is this how your plate was modified?



>>>IT slopes inward from the bottom . It is about a 45 degree angle , with the long point as the bottom corner , facing rearward when installed. It slopes inward from there as it gets towards the top.



If you have room, just slide your plate forward a bit.



>>>It is now all of the way forward , although I may have just a little more forward movement possible on the AFC.



Thank you.

Joe