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427 ls1 in a truck

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Old 12-28-2004, 07:06 PM
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Default 427 ls1 in a truck

has anyone tried to put a 427 ls1 in a truck yet. what tranny could handle that power.
Old 12-28-2004, 07:16 PM
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4l80e
Old 12-28-2004, 07:26 PM
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Ah No not for a long time but it will Depending what your power levels are
is the truck 4wd or 2 wd
Witha built tranny it would hold for a while
Until you decided to spray the thing
I would say talk to FlP about a tranny for it Depending on weight I think it would live for a while Depending on how heavy your foot is
The 4l80E swap isn't cheap and the 1st gear in it sucks ***
Old 12-28-2004, 07:39 PM
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it would be for a 2wd. I have a ls6 block in my shop and I have a 6.0L block as well. I am trying to decide to send the block to MTI to convert it to a 427 or just build a 408 or 402 with my 6.0l block. Since no one has tried the 427 route I might do this to have something different. what do you think about this idea.
Old 12-28-2004, 07:43 PM
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Your gonna need a good built tranny like a flp as mentioned above to have it last any amount of time.
Old 12-28-2004, 08:42 PM
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A guy over at SilveradoSS.com has a 427/C5R in a SS. He is on here sometimes too. Looks pretty bad ***!
Old 12-28-2004, 09:09 PM
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A guy on ZR2.com has a 427/C5R in his ext. cab ZR2...he also put a FS front diff in, functioning Corvette seats, along w/ a lift and 33s. He burnt up a bunch of 4L60s, even in a "lighter" S-10, so he ended up using a 4L80. Pretty cool truck, I guess it helps when you're a GM engineer.
Old 12-28-2004, 09:48 PM
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gearmup has 427 c5r in his ss, he went threw a few stock trannys untill he got a built 4l65e and its holding strong for now.
Old 12-28-2004, 09:51 PM
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who makes a strong 4l65e that could handle the power of a 427
Old 12-28-2004, 10:11 PM
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I'm running the FLP 4L65E behind my 427, no problems yet. It's only been 2k miles though. I am planning on spraying so I'm saving up for the FLP 4L80E.


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