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Old Jun 24, 2017 | 05:36 PM
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Who built the best ls1 4l60e transmissions in the USA?Thank you in advance for the info
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Old Jun 24, 2017 | 06:37 PM
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There is really no definite best...but there are a few greats such as FLT, Performabuilt, RPM, Jakes trans, Rossler.
FLT, Performabuilt, and I think RPM are Sponsors on this forum and can help you out, they are all very reputable companies with proven transmissions and can lead you in the right direction. Rossler is also known for very strong 4L60E units.

I would also stay away from Monster Trans. Our Shop, as well as others, have not had good luck with them. I have also heard negative things about PATC built trans.

What is the application and intended use, as well as what mods and estimated HP are you running? Sometimes a 4L80E may be the cheaper and more logical answer.

Last edited by 07NBSChevy; Jun 24, 2017 at 07:59 PM.
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Old Jun 24, 2017 | 06:44 PM
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Can't speak for the other brands, but I have a performabuilt lvl 2 and I love it. Excellent customer service as well. I'll call them for future builds if that helps your decision.
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