I talked to a local tranny guy that does awesome work and he said he hasn't been able to keep a modified truck from breaking the tranny. He has no problems with the f-bods, but said the weight of the trucks is the problem for the 4l60e. He replaced one guys tranny 2 times b/c the clutches/bands kept breaking. On the third time the problem was he broke the input shaft off the drum. Maybe the hardened input shaft/drum and sun shell are the key. I don't know the specs of the FLP IV, but I know Speed Inc uses them in their stage 2&3's. But I know your story with them.

 

I say let FLP replace the transmission under warranty. Then give it another try. Dont make any hasty decisions at this point.

BTW - how did the wire harness, injectors, and fuel rail modifications go?

 

"BTW - how did the wire harness, injectors, and fuel rail modifications go?"

big tex, go check this link out and tell me what you think. everything went in prety easy and it is running well but i seem to have a problem.

https://ls1tech.com/ubb/ultimatebb.p...;f=23;t=003338

 

https://ls1tech.com/ubb/ultimatebb.p...c;f=7;t=008611

4l80e f/s with tci harness... just saw this thought you or xlr8rns (however you spell it) might check it out...

 

Thanks for the link Brandon. I am checking with a friend on the price for a used 80. I have seen them cheaper but, they didn't have the extra computer.

I am going to be using the stock computer to control mine so I wouldn't need the extra computer.

John

PS - Just call me John if you can't remember my handle. <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" /> Just think "Excelerating SS"

 

are you just going to have the computer flashed with that from a 6l or what?

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Brandon:
<strong>are you just going to have the computer flashed with that from a 6l or what?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Brandon - Ken from Carputing said that I would need to start with the flash from a 4L80E equipped truck since the software that controls the trans is different from a 4L60E. Then I can use LS1edit to modify whatever I want.

John

 

well i figured you would be doing something along those lines... or lettin are or whoever do it for you....

 

Good deal!

I'm glad Chuck is taking care of this for you. He seems like a stand up guy. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

John

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by red53gmc:
<strong>I talked to a local tranny guy that does awesome work and he said he hasn't been able to keep a modified truck from breaking the tranny. He has no problems with the f-bods, but said the weight of the trucks is the problem for the 4l60e. He replaced one guys tranny 2 times b/c the clutches/bands kept breaking. On the third time the problem was he broke the input shaft off the drum. Maybe the hardened input shaft/drum and sun shell are the key. I don't know the specs of the FLP IV, but I know Speed Inc uses them in their stage 2&3's. But I know your story with them.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I emailed Chuck at FLP and he said he doesn't use the hardened input shaft or drum...yet, but does reinforce where the input shaft goes into the drum.