Externally Balanced Flywheel - Team Camaro Tech
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post #1 of 5 (permalink) Old Nov 11th, 18, 09:09 AM Thread Starter
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Ted
 
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Externally Balanced Flywheel

Hi guys,


So I've done some searching and I'm a bit confused on what I need to do. I have a 383 and after searching I'm realizing that its externally balanced. I'm doing a transmission change so I thought I'd change out the flywheel and clutch while I'm at it. The engine, flywheel and clutch only have 800 miles on them but I didn't shim my first starter correctly and wore some of the teeth on the flywheel, so I want to change it. My new transmission has the bigger input shaft so that's why I'm changing the clutch. I bought a new McLeod flywheel (460122) that is zero balanced and the MeLeod external weight kit for it. Is it as simple as adding the weight to the flywheel or do I need to have it balanced by a machine shop? The flywheel that came off was a Ram 1523.



Thanks for the help

1969 Camaro, 383, M23Z from Jody's Transmission, Ford 9 inch w/3.00 gears, Ridetech tubular A arms, coil overs, 4 Link, Wilwood brakes, No Weeds cutouts, e-stopp, kick panels and package tray from The Shop LLC, TMI seats and one piece headliner, Vintage Air
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post #2 of 5 (permalink) Old Nov 11th, 18, 09:42 AM
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Dave
 
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Re: Externally Balanced Flywheel

It is as simple as adding the weight; just be double sure it is added in the correct location.

David Freiburger built a 406 as a project for a Hot Rod magazine article and it almost made a thousand feet before the motor exploded (broke block in half, crank into three pieces and scatter the rest along the track). Post mortem discovered that they had installed the fly wheel incorrectly, because they had removed the pilot from the rear of the crankshaft allowing the flywheel to bolt on with the weight 120 degrees out of phase.

Halving your rotating assembly balanced is always a good idea if you like to have it stay together at high RPM. Factory parts are balanced to 26 grams, race engines to 2-5 grams depending upon having a wet sump or a dry sump system.

Big Dave
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post #3 of 5 (permalink) Old Nov 11th, 18, 11:17 AM Thread Starter
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Ted
 
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Re: Externally Balanced Flywheel

Thanks Dave! That was exactly what I needed to know.

1969 Camaro, 383, M23Z from Jody's Transmission, Ford 9 inch w/3.00 gears, Ridetech tubular A arms, coil overs, 4 Link, Wilwood brakes, No Weeds cutouts, e-stopp, kick panels and package tray from The Shop LLC, TMI seats and one piece headliner, Vintage Air
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post #4 of 5 (permalink) Old Nov 12th, 18, 06:34 AM
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Ben
 
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Re: Externally Balanced Flywheel

i have an externally balanced flywheel for a 400 SBC sitting around. it will need to be resurfaced as it's been sitting for a long time but i bought it new way back in the day when i was running a four speed behind my 400. I'm pretty sure its a GM unit as i recall having a hard time finding an aftermarket one. PM if interested. i'll let it go cheap. not sure what shipping would cost.
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post #5 of 5 (permalink) Old Nov 12th, 18, 07:27 AM Thread Starter
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Re: Externally Balanced Flywheel

Quote:
Originally Posted by bhodgdon400 View Post
i have an externally balanced flywheel for a 400 SBC sitting around. it will need to be resurfaced as it's been sitting for a long time but i bought it new way back in the day when i was running a four speed behind my 400. I'm pretty sure its a GM unit as i recall having a hard time finding an aftermarket one. PM if interested. i'll let it go cheap. not sure what shipping would cost.
Thanks so much for the offer! Iíve already purchased the McLoed so Iíll go that route. Thanks again.

1969 Camaro, 383, M23Z from Jody's Transmission, Ford 9 inch w/3.00 gears, Ridetech tubular A arms, coil overs, 4 Link, Wilwood brakes, No Weeds cutouts, e-stopp, kick panels and package tray from The Shop LLC, TMI seats and one piece headliner, Vintage Air
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