454 Flywheel Balance... INT or EXT? - Team Camaro Tech
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post #1 of 5 (permalink) Old Oct 7th, 05, 09:24 AM Thread Starter
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454 Flywheel Balance... INT or EXT?

I've got a 69 camaro and I'm swaping out my 350 for a 454 so I'm trying to collect all the different parts I need...
From what I can tell, I THINK I need an externaly balanced flywheel for a 71
454. Is the balancing related to the engine size or the year of the engine?

Thanks,
-A
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post #2 of 5 (permalink) Old Oct 7th, 05, 01:57 PM
 
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Smile Re: 454 Flywheel Balance... INT or EXT?

Only the 454 BB and 400 SB use externally balanced flywheels, flexplates and dampers.

And the F/W's and F/P's are different so you can't use them on each other.

And they should be stock balanced so they can be used on any 454 or 400 motor!

So don't let a Machinist balance them specifically to an engine rotating assembly b/c if you do, they will have to be re-balanced so they can be used on other engines..

pdq67

PS., and I am just talking about the older BB's and SB's here b/c I think some of the newer ones, (502 and 305), are extenally balanced too, but then again, they aren't made like the older two-piece crank seal motors either...



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post #3 of 5 (permalink) Old Oct 8th, 05, 06:03 AM
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Re: 454 Flywheel Balance... INT or EXT?

PDQ is right. But if your replacing the crank you have an option of int or ext balance. Just be sure to get the right balancer and flywheel for what your running.

68 Camaro~LSx ~all motor
1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53
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post #4 of 5 (permalink) Old Oct 8th, 05, 08:28 AM Thread Starter
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Re: 454 Flywheel Balance... INT or EXT?

I bought a 71 454 but I need a flywheel since it doesnt have one and I knew I couldnt use the one from my 350.. I just see on ebay they have listing for both INTERNAL and EXTERNAL balanced 454, wich I thought was odd, but I wanted to make sure. THanks GUys
-A
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post #5 of 5 (permalink) Old Oct 8th, 05, 04:03 PM
 
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Smile Re: 454 Flywheel Balance... INT or EXT?

You can buy a cheap balance weight that fits between a 350 flywheel and the crank which adds the needed out of balance to everything to keep from buying a dedicated 454 flywheel.

There are two of them, one for the 400 SB and the other for the 454 BB so you can use regular f/w's on them... Just make sure you install it pointing the right way is all...

I think for about $20 or maybe less?

And check Northern Automotive Parts b/c they have a big list of this stuff for not all that bad of prices, at least to me..

pdq67



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