Need converter advice

02suburbanZ71 · January 22, 2015

Guys they had to make me a 2800-3000 circle D and I'm really scared to be honest, can someone make me feel better

NitroCherokee · January 22, 2015

Guys they had to make me a 2800-3000 circle D and I'm really scared to be honest, can someone make me feel better

Drop back to about 2600, your trans will last a lot longer with a lot less heat

02suburbanZ71 · January 22, 2015

I cant they said they already started building it. I'll have to put in a 40K trucool

02suburbanZ71 · January 22, 2015

I canceled my order for the stall even though i paid. I just couldnt pull the trigger. Its too nice and dependable of a vehicle to throw a stall in, as much as i wanted it.

kmborland · February 18, 2015

I have a question for you. What all is done to your burb? I have plenty of grunt to lite my 315/70r17 from a stop with the stock 3.73 gear. I do have a tune and basic bolt-ons, but nothing really to brag about. My truck doesn't have a problem jumping off the line either. Where does you truck currently stall at? Mine stalls at 1800 under hard acceleration, which I think is plenty to get torque/jump off the line. When you are accelerating hard from a dead stop, do you flat foot it or do you half throttle until pass the stall speed? That makes a really big difference in acceleration. Full throttle from a stop puts the truck in abuse mode and pulls timing/power until 3 sec later. Another thing, what is that saying,"if your spinning you ain't winning!"

kmborland · February 18, 2015

Also, you have a lot of weight over the rear which makes it harder to break it loose than say a truck with the same drivetrain.

02suburbanZ71 · February 18, 2015

Its just a BB tuned and k&n suburban. It wouldnt spin 265/70/17's taking off with 3.73 or brakestand. With the new trans it spins em off the line and 1-2 shift. Im not gonna try to brakestand the new trans but it has more power off the line now. Justin took all the abuse mode and such out. I told him i wanted to spin em and he did all he could. Yeah all the extra weight, full 31 gal tank, A/T's, and the suv has the upgraded dual piston brake upgrade so its just too much to ask for. However im happy i didnt stall it

02suburbanZ71 · February 18, 2015

I have a question for you. What all is done to your burb? I have plenty of grunt to lite my 315/70r17 from a stop with the stock 3.73 gear. I do have a tune and basic bolt-ons, but nothing really to brag about. My truck doesn't have a problem jumping off the line either. Where does you truck currently stall at? Mine stalls at 1800 under hard acceleration, which I think is plenty to get torque/jump off the line. When you are accelerating hard from a dead stop, do you flat foot it or do you half throttle until pass the stall speed? That makes a really big difference in acceleration. Full throttle from a stop puts the truck in abuse mode and pulls timing/power until 3 sec later. Another thing, what is that saying,"if your spinning you ain't winning!"

So far i've beat all my friends trucks with ease. 07 cummins with k&n, strait pipe, 02 silverado 5.3 ext cab, 97 ram 5.2, 98 1500 5.7. Its a very fast suburban All the above trucks can brake stand-- i cant but i can easily smoke them in a race!! Even if they dont lose traction. Why??

kmborland · February 18, 2015

lots of variables in the races, and things can be different from day to day. But, knowing how the hp/torque curve look on my 5.3, the 5.3 is at basically 90% peak torque from 2200 rpm to just about 5100 rpm. That's the edge you have over most of the other trucks you listed. The old 350 vortec peaked around 2800 rpm then started dying off rapidly, same for the 318 ram truck. IDK how you beat the 02 5.3 truck, unless it needs a tune up or something... The cummins should give you a good run from a dig if he brake boost it, if he didn't, then they are slow (as with most diesels that aren't in a race).

My dad's truck is basically the same thing my truck is but has 285/70r17 tires. We raced from a dig and I put half truck by my 1-2 shift, then just over a truck by around 70ish before he quit. I think most of the reason I walked him was from the fuel enrichment tuning, 5800 rpm shift point vs. his 5500 rpm, and fast/harder shifts from the tune. I didn't really pull on him through the gear, just on the launch and shifts.

02suburbanZ71 · February 19, 2015

lots of variables in the races, and things can be different from day to day. But, knowing how the hp/torque curve look on my 5.3, the 5.3 is at basically 90% peak torque from 2200 rpm to just about 5100 rpm. That's the edge you have over most of the other trucks you listed. The old 350 vortec peaked around 2800 rpm then started dying off rapidly, same for the 318 ram truck. IDK how you beat the 02 5.3 truck, unless it needs a tune up or something... The cummins should give you a good run from a dig if he brake boost it, if he didn't, then they are slow (as with most diesels that aren't in a race).

My dad's truck is basically the same thing my truck is but has 285/70r17 tires. We raced from a dig and I put half truck by my 1-2 shift, then just over a truck by around 70ish before he quit. I think most of the reason I walked him was from the fuel enrichment tuning, 5800 rpm shift point vs. his 5500 rpm, and fast/harder shifts from the tune. I didn't really pull on him through the gear, just on the launch and shifts.

I beat the 02 5.3 1500 ecrb pretty darn good, he only has 138K miles. How does the fuel enrichment help? Justin played with that on mine

vettelovralexand · February 19, 2015

You guys make it sound like a 3000 stall is a non-lockup converter from a race car with a powerglide. I agree it is on the high side for a stock cam, but it doesnt mean the truck has to go to 3k to move or that you still cant cruise the interstate locked at 2k. With a 40k the truck would be fine.

02suburbanZ71 · February 19, 2015

I believe the heat would significantly shorten the life. Also i kind like the tightness of the oem but not the stall speed of 1600

vettelovralexand · February 19, 2015

Heat will definitely shorten the life, but the 40k is a huge cooler.

kmborland · February 19, 2015

Have either of you driven a 3/4 or 1 ton truck/van with the 6.0/4l80e? I like how the stall flashes to 2400-2500rpm when full throttle from a stop. I also like way it shifts with the higher stall, less rpm drop through gear changes. Kind of like driving a cvt trans. The higher stall allows the engine to stay at, lets say 2000 rpm, through shifts keeping the engine in its power band. I am sure with the right tuning with a 2200-2500 rpm stall, the 4l60e would not loose much life.

Stall speed also changes with weight, power, and gear of the truck. The same stall behind a more powerful engine will stall higher than an engine with less power. My truck stalls higher after the tune and 315 tires than it did stock with 285 tires on it. I want a higher stall in my truck, but with 200k on the stock trans, I think I will weight till I rebuild it before doing so. I would probably look at stall with flash rating around 2200-2400 rpm.

vettelovralexand · February 20, 2015

Yep. Several times I have towed with one. A lot of people use the 4l60 converter out of a trailblazer to act about the way the 4l80 acts in the big trucks.