C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

flywheel question

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Old Apr 22, 2007 | 04:47 PM
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Default flywheel question

i am wanting to step up to a 383 in my 96 lt4 and i have the rotating assembly ready just need the block prep and oil pan for it.. but i have a forged eagle neutrally balanced crank and i know that the DM flywheel is for externally balanced 1 peice rear main cranks.. does anyone know what flywheel is available for this setup.. i don't mind going to a single mass flywheel? anyone have a setup that they would recommend? its going to be in the 500-550fwhp range?
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Old Apr 22, 2007 | 05:42 PM
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I'm running an SPEC aluminum single mass flywheel in my 383LT4. I have an internally balanced assembly as well. There is a little noise at idle with the clutch out, but other than that I cannot tell the difference in terms of noise.
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Old Apr 22, 2007 | 09:29 PM
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you have the part number on that by chance?
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Old Apr 22, 2007 | 10:10 PM
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Sure;

Aluminum flywheel: SC05A - $399
Steel flywheel: SC05S - $299

www.specclutch.com
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Old Apr 23, 2007 | 03:10 PM
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i think that is for the stock style balancing.. they call them internally balanced but the only thing internally balanced is the front and the rear has an externally balanced (weighted) flywheel/flexplate.. my crank is a one piece rear main crank balanced internally in both the front and rear.
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Old Apr 23, 2007 | 03:29 PM
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How about the steel F-body FW?
I'm running one.
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Old Apr 23, 2007 | 04:55 PM
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Originally Posted by pr0zac
i think that is for the stock style balancing.. they call them internally balanced but the only thing internally balanced is the front and the rear has an externally balanced (weighted) flywheel/flexplate.. my crank is a one piece rear main crank balanced internally in both the front and rear.
All you need to do it remove the extra weight they add to it and you're all set, then it is neutral balanced. It's a just a couple of allen screws
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Old Apr 23, 2007 | 08:11 PM
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oh.. then that will work.. thank you!!!!
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Old Apr 23, 2007 | 08:12 PM
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Originally Posted by 89 Paul in Cal
How about the steel F-body FW?
I'm running one.
you have a stock style crank.. mine is balanced different.
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Old Apr 23, 2007 | 10:30 PM
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Originally Posted by pr0zac
you have a stock style crank.. mine is balanced different.
Not on my rebuilt engine. Had it it fully internal balanced so I could use a FW that didn't have the offset weight on it.

I think you will like the steel FW. Just remember to have it shaved down.
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