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2500# car - 4l60e - Boost

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Old Oct 16, 2013 | 10:24 AM
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Default 2500# car - 4l60e - Boost

Hey guys, I have some questions for the FI crowd. I'm building a 1988 bmw 325is. I have a 2002 lm7 with 50k miles and a truck 4l60e. Planned upgrades for the tranny include:

transgo hd2 shift kit
corvette servo
Sonnax 2-3 shift valve
Large trans cooler
2200-2800 stall (undecided yet)

The motor is getting a hybrid Denmah turbo setup. gt45 turbo, blah blah blah.

Questions for the you guys, this is full race car if you will, stripped to nothing (literally all the undercoat is gone), stitch welded, getting a cage in the next week or two. it's very light and targeted finish weight is 2500# with driver.

Will the 4l60e handle the setup, this IS NOT A DRAG CAR. So no hard launches, suspension isn't setup for that. I'm aiming for a 500-550whp range.

Your thoughts?


Link to a convo I'm having in a different thread with more information:
https://ls1tech.com/forums/automatic...l#post17755314

Last edited by Ironfreak; Oct 16, 2013 at 10:53 AM.
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Old Oct 16, 2013 | 10:50 AM
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If you build it right yes no problem. I have 900whp and 3800lbs with a tbrake and my 4l60 holds up. I have a level 7 flt. Keep it cool.
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Old Oct 16, 2013 | 10:53 AM
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Yeah I forgot to put the LARGE trans cooler in my list.
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Old Oct 16, 2013 | 11:21 AM
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With a good trans cooler, the 60e will do well in a light car
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Old Oct 16, 2013 | 11:54 AM
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Thats good to hear. I wasn't overly concerned but figured I would ask the question.
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Old Oct 16, 2013 | 09:12 PM
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My 4000lb GTO just went 144mph with my built 4L65e.
Seems to handle 800whp just fine.
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Old Oct 17, 2013 | 07:42 AM
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what makes a it a 4l6(5)e? Internally what is the difference. My buddy had one in his T/A and he could never give me a straight answer.
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Old Oct 17, 2013 | 09:12 AM
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Originally Posted by Ironfreak
what makes a it a 4l6(5)e? Internally what is the difference. My buddy had one in his T/A and he could never give me a straight answer.
https://ls1tech.com/forums/automatic...-vs-4l60e.html

Here's a link explaining the differences. Bob
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Old Oct 17, 2013 | 10:17 AM
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Thanks Bob That helps
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