Small Block & Big Block Chevy Specific Mouse & Rat Motor Discussion & Conversions

Big block with T-56

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Old Aug 16, 2008 | 08:00 AM
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Question Big block with T-56

Anyone bolt a t-56 to there rat motor?what was involved,and any part numbers?Thanks and I do own a LS-1 powered car!!
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Old Aug 16, 2008 | 01:20 PM
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You must use a special flywheel from centerforce i believe it is. That si a future plan for me as well.
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Old Sep 6, 2008 | 07:45 PM
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I used a flywheel from Mcleod when I put a LT1-style T56 behind my BBC. I ended up using a LT1 style clutch as well. I'll see if I can find the parts number I used. I know they also have flywheels to allow you to use a LS1-style set-up too.
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Old Oct 5, 2008 | 11:12 AM
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What clutch disc are you guys running with Big Blocks?
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Old Oct 11, 2008 | 12:01 PM
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I ran a Spec Stage III with mine.
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Old Oct 29, 2008 | 10:52 AM
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Just a little FYI... I had a t56 behind my 355 w/ around 350-375 hp... It was a 1997 tranny and I had it in a 1966 c-10. It did fine for a few months and then snapped. If your sticking a lt1 style t56 behind a BBC with anything done to it, you might want to have the tranny gone thru and beefed up a bit. Just my .02

Doc
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Old Oct 29, 2008 | 02:36 PM
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start off with a viper t56 and save yourself the headache of buying, breaking, and rebuilding close to viper specs and having way more than the viper t56 to begin with.
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Old Oct 29, 2008 | 03:06 PM
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I comepletely agree with slow... extra now= big payoff in the end!!

Doc
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how much are viper t-56s?
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Old Oct 29, 2008 | 04:18 PM
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Allot, you are some times to get lucky and find a good core and build it for 1000$ and be good for 700 HP.
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Old Oct 29, 2008 | 08:36 PM
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there was one on here about a month ago in good order for 2k. just have to more or less get lucky and run across one on here but i'm sure they can be found on a mopar or viper forum easily and abundantly.
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Old Oct 31, 2008 | 12:29 AM
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Six Speeds Inc (formerly T56 Rebuilds) can pop in a Viper mainshaft for ya. D&D did mine for me, but I here great things about Joe and Amber at SSI. Should hold up for you after that... Don't need a special flywheel though. I run a 1/4" spacer on my slave cylinder to make up for the thinner flywheel (making the clutch sit further ahead thus the fork further back). Makes the mechanical advantage a little better anyway for my quick tap on the clutch. This is with an LT1 clutch and T56 BTW. Mcleod has even finally made a run of SFI bellhousings for LT1s if you want to abuse it. Spec Stage 4+ here.
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