Engine timing and transmission strength

[dragondad]

I have a 2000 Silverado with th 5.3 engine. Has anyone played with the timing and if so how much advance with what kind of results. Did you have to reprogram your PCM? I'm, also curious if anyone knows what is the maximum power and torque a 4L60E could handle before having to modify it or change it to something with more umphf.

 

Thanks........

[99Silver6.0]

I have a 2000 Silverado with th 5.3 engine. Has anyone played with the timing and if so how much advance with what kind of results. Did you have to reprogram your PCM? I'm, also curious if anyone knows what is the maximum power and torque a 4L60E could handle before having to modify it or change it to something with more umphf.

 

Thanks........

 

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I added some across the board with EFILive when I was messing with my tune. I was nailing 33* @ WOT. Thats the only way to give it more heat is with some sort of tuner. It ran a bit better and I had to dump some 91 to keep it from pinging. Stock tranny cant take much IMO. I wont give that "much" a certain HP number because the 4L60E fails all the time wether stock or not! But I will say with a TransGo shift kit and billet intermediate servo, it can take quite a bit more power than a stock tranny. Granted it wont hold 500HP. But it sure will act alot better!! The TransGo HD2 is BY FAR the BEST shift kit you can possibly buy for the 4L60E. Period.

[Clavin78]

I dont think its a great idea to mess with your timing manually with todays electronics and computers. Just by a custom PCM and they can do it for you as well as other engine modifications.

[99Silver6.0]

I dont think its a great idea to mess with your timing manually with todays electronics and computers. Just by a custom PCM and they can do it for you as well as other engine modifications.

 

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Gotta know what your doing. Im comfortable with it. And Ive had had no problems. Even if you add too much and see some KR. Take some out. Simple! If you get KR in a certain RPM range or just at a certain RPM. Take some spark out of those cells. Gotta love the ability that EFILive or HPT gives you. Full and complete control!

 

Plus theres a bit more to it than just adding a few degrees to the High and Low Octane spark tables!

[Schmids5.3l]

I've read on quite a few sites the 4L60E is rated to hold 370 ftlbs from the factory. I dont know how true that is, Im guessing its accurate, I read them on informational type sites, not forums.

 

 

I found the shift kit you were talking about, I think.

 

http://www.transmissionpartsusa.com/4L60E_...0-035935hd2.htm

 

"1998 and newer may require Torque management modification"

 

What kind of Torque management modification? More/less?

[dragondad]

I dont think its a great idea to mess with your timing manually with todays electronics and computers. Just by a custom PCM and they can do it for you as well as other engine modifications.

 

<{POST_SNAPBACK}>

 

 

 

Gotta know what your doing. Im comfortable with it. And Ive had had no problems. Even if you add too much and see some KR. Take some out. Simple! If you get KR in a certain RPM range or just at a certain RPM. Take some spark out of those cells. Gotta love the ability that EFILive or HPT gives you. Full and complete control!

 

Plus theres a bit more to it than just adding a few degrees to the High and Low Octane spark tables!

 

<{POST_SNAPBACK}>

 

 

 

 

I'm trying to get what I can out of my 5.3. I got 100,000 miles on it right now and am thinking of changing out the engine at about 150,000. But for now, I want to squeeze whatever performance I can out of my engine. Another avenue I contmeplate is adding a super or turbo to it but I debate on whether it is worth putting in that kind of money on my engine or putting it toward a new one in the future. Either way, I want a tranny that could handle the power and torque output. I do like the idea of using EFIlive or HPT. Is one better than the other. Thanks for the advice.

[Clavin78]

I dont think its a great idea to mess with your timing manually with todays electronics and computers. Just by a custom PCM and they can do it for you as well as other engine modifications.

 

<{POST_SNAPBACK}>

 

 

 

Gotta know what your doing. Im comfortable with it. And Ive had had no problems. Even if you add too much and see some KR. Take some out. Simple! If you get KR in a certain RPM range or just at a certain RPM. Take some spark out of those cells. Gotta love the ability that EFILive or HPT gives you. Full and complete control!

 

Plus theres a bit more to it than just adding a few degrees to the High and Low Octane spark tables!

 

<{POST_SNAPBACK}>

 

 

 

 

I'm trying to get what I can out of my 5.3. I got 100,000 miles on it right now and am thinking of changing out the engine at about 150,000. But for now, I want to squeeze whatever performance I can out of my engine. Another avenue I contmeplate is adding a super or turbo to it but I debate on whether it is worth putting in that kind of money on my engine or putting it toward a new one in the future. Either way, I want a tranny that could handle the power and torque output. I do like the idea of using EFIlive or HPT. Is one better than the other. Thanks for the advice.

 

<{POST_SNAPBACK}>

 

 

 

 

At this point I think a new engine would be better than putting a super or turbo on.

[99Silver6.0]

I dont think its a great idea to mess with your timing manually with todays electronics and computers. Just by a custom PCM and they can do it for you as well as other engine modifications.

 

<{POST_SNAPBACK}>

 

 

 

Gotta know what your doing. Im comfortable with it. And Ive had had no problems. Even if you add too much and see some KR. Take some out. Simple! If you get KR in a certain RPM range or just at a certain RPM. Take some spark out of those cells. Gotta love the ability that EFILive or HPT gives you. Full and complete control!

 

Plus theres a bit more to it than just adding a few degrees to the High and Low Octane spark tables!

 

<{POST_SNAPBACK}>

 

 

 

 

I'm trying to get what I can out of my 5.3. I got 100,000 miles on it right now and am thinking of changing out the engine at about 150,000. But for now, I want to squeeze whatever performance I can out of my engine. Another avenue I contmeplate is adding a super or turbo to it but I debate on whether it is worth putting in that kind of money on my engine or putting it toward a new one in the future. Either way, I want a tranny that could handle the power and torque output. I do like the idea of using EFIlive or HPT. Is one better than the other. Thanks for the advice.

 

<{POST_SNAPBACK}>

 

 

 

 

At this point I think a new engine would be better than putting a super or turbo on.

 

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Time for a 6.0!!!!!!!!!!!!!!!!!