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What Flywheel?


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im doing a v8 swap in my 77 280 and the moter i am using is a Tune port injected 350 and a t5 trans but im having a problem finding a flywheel i think i need the 152 toothed one but cant figure out what vehicals these came in this is a car bellhousing so i guess i need the small flywheel any help would be apreciated.

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i got my flywheel recently also but for a lt1/t5... it should be the same as for your motor i think.... im using a third gen camaro bell housing... tpi motor looks great i almost went that route cuz the engine looks so kool. check this out hope it helps.

http://forums.hybridz.org/showthread.php?t=97577&highlight=lt1+bellhousing

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I would use a nodular iron flywheel - the weighed in around 14+ lbs. Check out the chart on this page http://cgi.ebay.com/ebaymotors/1986-Up-SB-Chev-Nodular-Iron-Lightweight-Flywheel-12-75_W0QQcmdZViewItemQQcategoryZ33732QQihZ019QQitemZ8030219432 for the right correct part number for your application.

 

BTW, get the casting number off the engine and then use the chart at MorTec http://www.mortec.com/castnum.htm to figure out what engine you have.

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This one: http://www.sdparts.com/product/14085720/1985EarlierSBCBBCNodularIronLightweightFlywheel1234in.aspx

pointed out above, is only 15lb. Not SFI rated, but tested to 10,000 rpm. See my post about it in a related thread:

http://forums.hybridz.org/showthread.php?t=97747

 

Wow, the one for the 86-up 1-pc seal engine is $309 at sdparts!!!!! The ebay price of $230 in that link speedracer gave is better, but, No thanks, I'd be looking for aftermarket for a light flywheel for the 1-pc seal engines!

 

I run a scattershield (the new Sonic/Tilton one for 153 tooth flywheels): http://www.tiltonracing.com/content.php?page=feat1

so if it breaks, I am not too concerned. I have to have it resurfaced - there are a few heat spots on it that I need to have the speed shop/performance machine shop look at - I may be buying another one or an SFI rated aluminum one with a replaceable steel insert.

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Watch out with the 86 and up Camaro flywheels, they are set up for external balancing just like the LT1.

 

I know this for 100% sure, I have a 153 tooth 16lb flywheel from a 86-up 305 on my LT1. These engines all had 1 piece rear main seals and a different bolt pattern on the flywheel. The flywheel works perfectly with the LT1 and makes for an easy match to a T5 using the Camaro bellhousing, clutch fork and clutch parts.

 

Wheelman

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Maybe a quote from the Scoggin-Dickey site for the 86+ flywheel helps here:

 

Technical Notes: Flywheels, in engines before 1986 us a two-piece rear seal. The bolt circle on pre-1986 production crankshafts is 3.58†in diameter. For 1986 and later production crankshafts the bolt circle is 3.00â€. If your engine has a crankshaft with a one-piece rear seal, you must use a flywheel (or flexplate) with a 3.00†bolt pattern and a counterweighted flywheel for proper engine balance.
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Cool. I found the 15lb "up through 1985" flywheel under part number 6515 for the same exact price (59.99 + 145.00 core charge). Mine is maybe not so hot looking and I may just take it in as a core and get a new one!

http://autozone.com/R,APP1099301/vehicleId,1144203/initialAction,partProductDetail/store,2821/partType,00906/shopping/partProductDetail.htm

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