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Well after a big disappointment from CKperformance, i'm going to give Jakesperformance a shot. There a sponsor over on LS1tech so I guess they on this site to? I also thought about FLT, but i'm interested in Jakes trans-brake and it's a free upgrade right now. From reading many reviews over on LS1, he seems to be known to build a mean 4l80e.
Anyways, after talking with a Jake a good bit, he thinks a level 2.5 build is best for me as I told him I want some head room over my current power. It takes the level II rated/warrantied at 750hp and adds a billet input and billet rollerized forward hub.
Well see, he said about 2 weeks on build time. I'll keep you guys posted on the swap/performance gains.
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2004 GMC RST: TMS Iron 347/S480/4l80E
Old best 4.8L/S475: 919HP/880TQ
Quickest/Fastest 4.8L Truck 10.17@134.26 (retired)
What happened with CKPerformance? I have one of their 400's in my Chevelle.
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05 Joe Gibbs black RCSB ram air hood, Leer tonneau, blacked out tail and head lights. Forged 370, Wiseco pistons, Compstar Rods, Pro Flo XT intake, KB Racing log, T6 S480 , TSP 2.5 5.3l heads, Comp Cam 224/230 .600 with rockers, comp cams 1.75 roller rockers, dual Walbro 400's, 80LB injectors, 4l80e w/3200 multidisk Circle D, trutrac w/4.56's, 3"DI/DO Magnaflow, tips through the roll pan.
What about all the money u wasted on the CK? not gonna ask for a refund? Or atleast have them rebuild it and then sell it? I'm so scared to buy a tranny bc I know I'm gonna drive it like I stole it but if it's supposed to be built for high performance it should handle it for atleast 10-20k miles if it's your DD as well
I haven't decided what i'm going to do with the CK trans. It held good to 14-15psi or 600HP, but past that it slips bad. I may just send it back and get it rebuilt and sell it. Also could just send it into Jake for a core charge.
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2004 GMC RST: TMS Iron 347/S480/4l80E
Old best 4.8L/S475: 919HP/880TQ
Quickest/Fastest 4.8L Truck 10.17@134.26 (retired)
I would contact CKPERFORMANCE, and tell them what happened. I bet he can beef it up for you to hold. It was a few years ago, but I could have sworn that they had an 80E that was good for 2000+HP. If you send that to another company, they will just give you the core value. CKPERFORMANCE will at least help you out with it I would assume.
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05 Joe Gibbs black RCSB ram air hood, Leer tonneau, blacked out tail and head lights. Forged 370, Wiseco pistons, Compstar Rods, Pro Flo XT intake, KB Racing log, T6 S480 , TSP 2.5 5.3l heads, Comp Cam 224/230 .600 with rockers, comp cams 1.75 roller rockers, dual Walbro 400's, 80LB injectors, 4l80e w/3200 multidisk Circle D, trutrac w/4.56's, 3"DI/DO Magnaflow, tips through the roll pan.
My issue with CK is it took over two months to get it to me the first time. Was built with the wrong valve body, and took nearly 3 months to get the correct valve body.It was built to hold 900HP, but is slipping with well less then that.
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2004 GMC RST: TMS Iron 347/S480/4l80E
Old best 4.8L/S475: 919HP/880TQ
Quickest/Fastest 4.8L Truck 10.17@134.26 (retired)
Here we go JakesPerformance 4l80E/Transbrake
