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94-98 PowertrainDiscussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect...NO ADVERTISING
Hi,
Truck is stock. Been reading about changing the Governor springs. If I change to 3K's, are there any drawbacks/disadvantage if I keep my foot out of it? Currently, it falls off about 2200, and if I read correctly, 3K's will get me to about 3K before falling off (correct?). I've also read about installing 4K's, but that is more involved and more $, and I don't see the need to rev that far.
Any input would be great.
thanks
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94 2500-5 speed-2wd
Life is hard-
it's harder if you're stupid
4Ks and 3Ks take the same amount of work. The 4K kit has all the 3K springs pluss two more.
Valves with stock springs can float at about 3500. I took mine to 4K without a problem, once. Never again
Get the 4K's. The engine does not breathe well above 3200 stock, so there is no incentive to rev that high.
The difference is, the 4K will not de-fuel your engine at all. You can rev to 3000 and it is snappy. The 3K's will start to de-fuel your engine at as low as 2700, so it creeps up to 3000 and stops there.
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1996 CC LB 2WD auto 3.55 BD brake, BD Autoloc, 60# springs, 4K GSK, #5, 15 degrees, DDP AFC spring 7x0088 denso 148 ° injectors
The advantage is being able to achieve 3000 rpm, but you can do that by adjusting the stock springs. Sure makes jumping the gap between 3rd and 4th while towing easier. I have to disagree with skyking. I could easily get to 3400 rpm under load with the 3k kit. The disadvantage, according to the Bosch shop owner in Austin, is they move the max tq of the engine to a higher rpm. Not good when towing, unless you tow at 2500 rpm. When I had my pump worked on, due to an oil leak, he bench adjusted my original springs so that I can get to 3000. I sold my 3k set.
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97 3500, 2 WD, G56, slightly bombed, 975,000+miles
If you are lucky enough to be in Texas, you are lucky enough.
you can disagree all you want. There is no way a governor spring can move the torque band, think about it. All it does is remove fuel as the engine approaches the governed RPM.
Things that move the torque band:
1)things that inhibit or allow more rack travel. fuel plates, pump work, etc.
2)Timing
3) camshaft
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1996 CC LB 2WD auto 3.55 BD brake, BD Autoloc, 60# springs, 4K GSK, #5, 15 degrees, DDP AFC spring 7x0088 denso 148 ° injectors
So I can adjust the stock springs to get me close to 3K? That is as far as I need/want to go. I'm just wanting to increase the pull when loaded before having to shift (and yes, esp with the 3-4 gap), without decreasing reliability, longevity, and fuel mileage. I don't tow often, but an extra 5-600 rpm when shifting would be great for those few occasions. What's the steps to adjust the stock ones if that can be done to get to 3K (and does it hurt/compromise anything???
thanks guys
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94 2500-5 speed-2wd
Life is hard-
it's harder if you're stupid
you can disagree all you want. There is no way a governor spring can move the torque band, think about it. All it does is remove fuel as the engine approaches the governed RPM.
Things that move the torque band:
1)things that inhibit or allow more rack travel. fuel plates, pump work, etc.
2)Timing
3) camshaft
I was disagreeing with your statement that defueling starts at 2700 and creeps to 3000 with a 3k spring set. Mine did not do that, end of statement.
Unless you have a Bosch certificate hanging on your wall I'll stick with what he said.
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97 3500, 2 WD, G56, slightly bombed, 975,000+miles
If you are lucky enough to be in Texas, you are lucky enough.
What's the steps to adjust the stock ones if that can be done to get to 3K (and does it hurt/compromise anything???
thanks guys
I wasn't there when the pump was on the bench, but from what I know tightening the springs increases the RPMs. A couple adjustments may be required, and you might have to adjust your idle screw also. Going to 3000 will not hurt anything.
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97 3500, 2 WD, G56, slightly bombed, 975,000+miles
If you are lucky enough to be in Texas, you are lucky enough.
So could i tighten them down a bit ( a click or 2? ) to bring my defueling rpm up a bit?
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972500sclb4x412valvestock47reautometerHX35#11plateboost elbowpusherAEM CAI tork tec ofv285 kelly safari tsr'ssilencer ring MIA4" strait pipe 6" tipderale deep trans panonboard air w/grover 1510
From what ive read it will lower it so i will jut have to idle it up a bit, also what will it take? 2 clicks per side? Or should i just buy the gsk kit?
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972500sclb4x412valvestock47reautometerHX35#11plateboost elbowpusherAEM CAI tork tec ofv285 kelly safari tsr'ssilencer ring MIA4" strait pipe 6" tipderale deep trans panonboard air w/grover 1510
Oh ok, i do not want to or hope to be able to adjust stock springs down and be able to turn 4 grand, i just wonder if doing this little adjustment will give me a littke extra fuel rite before OD lock up when towing, i was going to do the 4gsk but i may try this first also will this make the throttle touchey or snappy like the gsk will? Or not quites as bad? Thanks
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972500sclb4x412valvestock47reautometerHX35#11plateboost elbowpusherAEM CAI tork tec ofv285 kelly safari tsr'ssilencer ring MIA4" strait pipe 6" tipderale deep trans panonboard air w/grover 1510
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