84 K30 496 engine swap...what all should I change? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Captainfab** · 02-22-2018, 12:28 AM

Is the 496 externally balanced the same as a 454 is? Was the engine balanced when built with the flexplate installed? If so, changing the flexplate to a flywheel will somewhat disturb the balance of the engine.

**57NAPCO** · 03-03-2018, 09:53 AM

Quote:

Originally Posted by Captainfab

Is the 496 externally balanced the same as a 454 is? Was the engine balanced when built with the flexplate installed? If so, changing the flexplate to a flywheel will somewhat disturb the balance of the engine.

Thanks Capt, as per the builder I think my task is to find a stock, un modified 454 flywheel for my project. Thank you for the question.

I only get to mess with my stuff occasionally, sometimes it’s months before I get back in the shop to tear stuff up

**kwmech** · 03-03-2018, 02:14 PM

Seems like a huge waste of horsepower in front of a 465 manual trans. Not like you can speed shift that beast or keep it in the power band with the wide ratios. Of course the power band is subjective with the amount of torque

**57NAPCO** · 03-03-2018, 05:19 PM

Quote:

Originally Posted by kwmech

Seems like a huge waste of horsepower in front of a 465 manual trans. Not like you can speed shift that beast or keep it in the power band with the wide ratios. Of course the power band is subjective with the amount of torque

It’s just a fun project is all. Didn’t need to make sense

02-22-2018, 12:28 AM	#1
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,246	Re: 84 K30 496 engine swap...what all should I change? Is the 496 externally balanced the same as a 454 is? Was the engine balanced when built with the flexplate installed? If so, changing the flexplate to a flywheel will somewhat disturb the balance of the engine. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

03-03-2018, 02:14 PM	#3
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,397	Re: 84 K30 496 engine swap...what all should I change? Seems like a huge waste of horsepower in front of a 465 manual trans. Not like you can speed shift that beast or keep it in the power band with the wide ratios. Of course the power band is subjective with the amount of torque



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