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

**57NAPCO** · 02-21-2018, 09:18 AM

I’ve had a 496 engine that Mark at Vortec Pro built for me back in 2010. It’s been sitting on my engine stand for about 4 years after pulling it out of another truck I have.

The truck it’s going in (84 K30 454) has a SM465 transmission, the previous truck (76 C35) was an automatic (TH400).

I was going to order some Hedman (ceramic coated) Hedders, motor mounts, transmission mounts, clutch kit.
Anything else I’m forgetting?

Any feedback or opinions are welcome...

geezer#99 · 02-21-2018, 10:12 AM

Pilot bearing.
New one would be good if you already got one.

b454rat · 02-21-2018, 11:48 AM

Some type traction device and big tires!! I swapped a mild 454 in a truck I built and would smoke the tires off.

**57NAPCO** · 02-21-2018, 03:11 PM

Quote:

Originally Posted by b454rat

some type traction device and big tires!! I swapped a mild 454 in a truck i built and would smoke the tires off.

lol

70K10Hunter · 02-21-2018, 09:21 PM

I am going to assume that your 496 is an 8.1 liter engine?
I have heard and am asking does the engine block have mounts for the starter?
If it doesn't then you will have to find a bell housing with a mount built in.
I am asking as I'm also thinking I want to do the same.

**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, 09:48 AM

Quote:

Originally Posted by 70K10Hunter

I am going to assume that your 496 is an 8.1 liter engine?
I have heard and am asking does the engine block have mounts for the starter?
If it doesn't then you will have to find a bell housing with a mount built in.
I am asking as I'm also thinking I want to do the same.

I’m mistaken; it’s a 468 build. A bit to many things going on and my simple mind doesn’t hold data like it used to

**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

02-21-2018, 09:18 AM	#1
57NAPCO F’B’D guy Join Date: Feb 2004 Location: Texas/Maine Posts: 2,208	84 K30 496 engine swap...what all should I change? I’ve had a 496 engine that Mark at Vortec Pro built for me back in 2010. It’s been sitting on my engine stand for about 4 years after pulling it out of another truck I have. The truck it’s going in (84 K30 454) has a SM465 transmission, the previous truck (76 C35) was an automatic (TH400). I was going to order some Hedman (ceramic coated) Hedders, motor mounts, transmission mounts, clutch kit. Anything else I’m forgetting? Any feedback or opinions are welcome...

02-21-2018, 10:12 AM	#2
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,512	Re: 84 K30 496 engine swap...what all should I change? Pilot bearing. New one would be good if you already got one.

02-21-2018, 11:48 AM	#3
b454rat Senior Member Join Date: May 2004 Location: Binghamton, NY Posts: 3,453	Re: 84 K30 496 engine swap...what all should I change? Some type traction device and big tires!! I swapped a mild 454 in a truck I built and would smoke the tires off. __________________ 2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 6” lift 1999 GMC Yukon 350/4L60 4" SAS

02-21-2018, 09:21 PM	#5
70K10Hunter Registered User Join Date: Jun 2012 Location: Hill Country Posts: 435	Re: 84 K30 496 engine swap...what all should I change? I am going to assume that your 496 is an 8.1 liter engine? I have heard and am asking does the engine block have mounts for the starter? If it doesn't then you will have to find a bell housing with a mount built in. I am asking as I'm also thinking I want to do the same.

02-22-2018, 12:28 AM	#6
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	#9
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,389	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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