Most Desirable Flywheel to add to 350 crate motor?

[Bushman66]

So I have 2 to choose from, the first is P/N 3789733 and is the factory flywheel out of the 1966 292 C10. The other flywheel is P/N 3973456N and is the factory flywheel out of a 1971 307 C10. Either could be resurfaced properly with no heat check marks or major issues.

I thought I read that the "N" suffix denotes a nodular iron flywheel and those are stronger and more desirable?

[Blue666(2)]

1st. Determine if your crate engine needs an internally or externally balanced flywheel.

2nd. For me, the most desirable is the flywheel is the one that works with my bell housing/ clutch disc/ pressure plate/ transmission & starter. If you don't have these parts yet, check your specs as you buy these items.

[Bushman66]

Originally Posted by Blue666(2)

1st. Determine if your crate engine needs an internally or externally balanced flywheel.

2nd. For me, the most desirable is the flywheel is the one that works with my bell housing/ clutch disc/ pressure plate/ transmission & starter. If you don't have these parts yet, check your specs as you buy these items.

It's a 350, and they are both internally balanced. I have the pressure plate and clutch disc, I haven't laid them side by side yet, but will t make sure they are the same as the parts I removed from the 292. I'll also make sure the disc slips easily onto the input shaft. As far as I can tell, the flywheels are identical and either would work (Chevy made things pretty easy), was more asking if there is a "desirable" casting number, like there is with blocks or heads. Thanks!

[WorkinLonghorn]

Why would you put an 11" flywheel on a 350? They came stock with 12", at least in '69 they did-

[Bushman66]

Originally Posted by WorkinLonghorn

Why would you put an 11" flywheel on a 350? They came stock with 12", at least in '69 they did-

?? They are both 14" flywheels.

[AcampoDave]

Is it possible the difference is in how much they weigh? I would guess a 292 may have a heavy one since it was designed for hard work at low rpm.
I had 3 flywheels to choose from when I did my clutch and I could see that one of them was thicker than the other two. Ultimately, I decided to leave that one on the shelf since my truck is more of a cruiser than a worker these days.

[Bushman66]

Originally Posted by AcampoDave

Is it possible the difference is in how much they weigh? I would guess a 292 may have a heavy one since it was designed for hard work at low rpm.
I had 3 flywheels to choose from when I did my clutch and I could see that one of them was thicker than the other two. Ultimately, I decided to leave that one on the shelf since my truck is more of a cruiser than a worker these days.

I ended up doing just that, except I chose the thicker of the 2 GM flywheels (the one off the 292) and got it resurfaced. Anyone want a brand new Made in China flywheel cheap?