What'd you ever come up with??

 

Thanks for checking on me..A black cloud on me solid.

I rebuilt my old vette basically during the same time as the truck. New motor, tranny and diff. Just got it almost broke in and the new RPM diff came apart on the xway at 80 mph. I was just entering a 3 mile bridge and no room to load up a trailer safely, so I had to drive 10mph over to the other side. My diff busted the side cover, case, ring\pinion. Another $2200...should arrive tomorrow. They basically called me a liar..QUOTE: "We have been doing this a long time and they don't just come apart"................WELL MINE DID at 400 miles and I was logging and can prove I wasn't on the drag strip and no wheel hop at 80 mph. Never ever do business with them again. I sent it to Rick at RTK...he found no reason to come apart. He said maybe...the case had a hair line fracture RPM didn't notice when rebuilding.

Anyway..on the truck I haven't had time to try anything. I am switching back to my old pcm. Thinking maybe the one I am using is flaking out. Last time at the track it ran one run perfect and then the next it was right back shifting to second after launch. Will be 3-4 weeks before I am back on it. LSX event in Bowling green coming up

 

let me know if you want me to send a stand alone 4l60e computer for you to try. should be the end all debate on whether it is the tune, or the transmission.

 

Thank you...let me do one more test with my old pcm.

 

I have to give it to you. You don't give up!! Hope you get it lined out soon. I wanted to follow in your steps with a bad n/a build but jumped on the turbo band wagon.

 

Damn I love turbos. I thought about it but would have had to change everything.

 

any word on if it's the tune, or the trans? My offer to send a TCM is still on the table. I also have a real 4l60 for sale. billet shafts, sonnax drum (for extra 3/4 clutches), trans brake....the werx. it has about 2,000 miles on it. I just don't have anything to put it in.

 

I really appreciate the offer. I have not been able to work on the truck at all except for putting my vacuum pump back on and having my alternator rebuilt to a 140 amp. I read somewhere that low voltage can cause the same crazy stuff that I have going on. I only had a 105 amp and have added electric fans drawing 14 amps and a Bosch 44 pump drawing an additional 28 amps. I was hoping the low voltage might be the ticket. I need to get the truck back to the track to test it.