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Old Sep 10, 2014 | 02:13 PM
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Default Pulley question

Will the Corvette Crank pulley on a 350 bolt onto a 454 harmonic balancer?

I need the smaller pulley to fit in the car without modifying the crossmember.
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Old Sep 10, 2014 | 03:15 PM
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Check the pulley diameters. If not interchangeable, you can always buy a big block underdrive pulley with a smaller diameter that fits your needs.
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Old Sep 10, 2014 | 05:18 PM
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454 with "Corvette pulleys" should fit in place without modifing anything.
its close.... so close its hard to get belts on, but it should fit.
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Old Sep 22, 2014 | 06:54 PM
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Originally Posted by C3 Stroker
Check the pulley diameters. If not interchangeable, you can always buy a big block underdrive pulley with a smaller diameter that fits your needs.
I went ahead and tried a Corvette 350 pulley.

The 350 pulley fits on the 454 balancer easy enough. It is even a little bigger than a Big Block pulley!



A stock 454 looks like this. And yes, I could probably force the belts on, but I really need a little more room to feel comfortable.

Anyone know a part number for a slightly smaller, maybe 7 inch 454 pulley?

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Old Sep 22, 2014 | 07:47 PM
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They fit but check the alignment, prev owner for didn't check pulley numbers and put a bb pulley on when he added aftermkt a/c. Ps pulley was fine but alt pulley out by about 1/8" and would squeal above 3500 rpm.
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Old Sep 22, 2014 | 10:19 PM
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Reference this thread....there was a 7" diam. 454 pulley, but don't know if it's still available......https://www.corvetteforum.com/forums...k-pulleys.html
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Old Sep 23, 2014 | 02:13 AM
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I ran the 350 pulleys on mine, had to shim the water pump pulley a tad and switch to a flex fan for clearance
I didn't feel like paying a fortune for the 454 pulleys
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Old Sep 23, 2014 | 08:57 AM
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Wow, those things are EXPENSIVE!!!!!

After reading and going through the thread referenced above and doing a lot of checking, I finally settled on what I believe is the right part.

Seems as if Marine applications use the smaller one.

But Amazon seemed to have the best deal around on a nice billet one.

Prices for these pulleys is obscene.

Amazon Amazon
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Old Sep 26, 2014 | 04:36 PM
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Got this billet aluminum pulley for 46.00. It fits the 454 harmonic balancer perfectly. 6.75 inches across.

Some of the pulleys for this motor are pornographically expensive. It is possible to get one cheaper, but this one seemed a bit nicer for not much more money.

I will match the water pump, alternator and P/S pump.

I don't care about the smaller pulley as I intend to run a small oil cooler on this car.

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