Installing big block in a 64 k30 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

alyslo · 10-14-2012, 01:42 PM

Looks like I have to slightly modify the firewall in order to do this conversion. Does anyone have any pictures or thoughts on how to do this and make it look somewhat normal? Its a 454 with nv4500 transmission conversion. I have a front crossmember/engine mount out of a 67 4x4. Any ideas would be greatly appreciated. Thanks!

padresag · 10-14-2012, 02:57 PM

here is one going into a 65 2 wheel (eng mounts in the same place). he didn't have to modify the firewall. you may have to just slide that c/member forward a hair. just put it in place and see what it looks like. that cross member rests on the inside of the frame so should support it without bolting it up for that
https://picasaweb.google.com/fritz19...42660038055314
ron

RockTonka · 10-14-2012, 04:06 PM

We modified the firewall for valve cover (tall) clearance in our 2wd 66. Large cap HEI still had plenty of room. Most people don't notice it, seems obvious to us though

66farmer · 10-14-2012, 07:14 PM

I modified the fire wall just a little bit.

**Captainfab** · 10-15-2012, 01:18 AM

I would just slide the engine forward a couple inches, and not have to modify the firewall. You will have to run the short water pump if you do. That is what I did with my '66 Suburban.

**argonaut** · 10-15-2012, 02:57 AM

I second that. Since you aren't running a stock 4-speed with the bellhousing crossmember it should be easy for you to just slide the whole thing forward.

1963c-10 · 10-15-2012, 01:13 PM

Rocktonka....what wire looms did you use to route the wires down the valve covers. They give it a very clean look.

alyslo · 10-15-2012, 09:10 PM

Thanks for all the pics and info guys!

RockTonka · 10-15-2012, 09:43 PM

Quote:

Originally Posted by 1963c-10

Rocktonka....what wire looms did you use to route the wires down the valve covers. They give it a very clean look.

I forget the brand, but you can get a feel for the look in the pics. These were designed to be mounted in a horizontal orientation off of the outer valve cover bolts...wasn't possible with the valve covers we liked. We flattened the mounting tabs and made some adapters that allowed them to sit vertically on the opposite side they were designed for.

**Captainfab** · 10-16-2012, 12:55 AM

Those look like the R&M Specialties wire looms. I've used them several times. Good quality and good people to deal with. You can also buy them at Summit.

http://www.rmspecialties.com/

Quote:

Originally Posted by RockTonka

I forget the brand, but you can get a feel for the look in the pics. These were designed to be mounted in a horizontal orientation off of the outer valve cover bolts...wasn't possible with the valve covers we liked. We flattened the mounting tabs and made some adapters that allowed them to sit vertically on the opposite side they were designed for.

1963c-10 · 10-16-2012, 08:48 AM

Thanks to both of you. They just look real clean...i like it.

alyslo · 11-17-2012, 02:56 PM

Looks good! What did you use for headders?

10-14-2012, 01:42 PM	#1
alyslo Registered User Join Date: Aug 2012 Location: Troutdale Oregon Posts: 13	Installing big block in a 64 k30 Looks like I have to slightly modify the firewall in order to do this conversion. Does anyone have any pictures or thoughts on how to do this and make it look somewhat normal? Its a 454 with nv4500 transmission conversion. I have a front crossmember/engine mount out of a 67 4x4. Any ideas would be greatly appreciated. Thanks!

10-14-2012, 02:57 PM	#2
padresag Registered User Join Date: Feb 2008 Location: Sidney,b.c. Posts: 4,425	Re: Installing big block in a 64 k30 here is one going into a 65 2 wheel (eng mounts in the same place). he didn't have to modify the firewall. you may have to just slide that c/member forward a hair. just put it in place and see what it looks like. that cross member rests on the inside of the frame so should support it without bolting it up for that https://picasaweb.google.com/fritz19...42660038055314 ron

10-14-2012, 04:06 PM	#3
RockTonka Registered User Join Date: Jun 2010 Location: Oklahoma City, OK Posts: 1,524	Re: Installing big block in a 64 k30 We modified the firewall for valve cover (tall) clearance in our 2wd 66. Large cap HEI still had plenty of room. Most people don't notice it, seems obvious to us though Attached Images __________________ 1958 Chevy 1 ton dually 4X4 dump/flat bed My build thread 1966 "Not-So-Original" Chevy Custom Trim Suburban My Time-Killing Project Truck 1966 GMC Extended cab 1 1/4 ton 4X4 My Son's build thread

10-14-2012, 07:14 PM	#4
66farmer Registered User Join Date: Jun 2007 Location: North Plains Oregon Posts: 684	Re: Installing big block in a 64 k30 I modified the fire wall just a little bit. Attached Images

10-15-2012, 01:18 AM	#5
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,252	Re: Installing big block in a 64 k30 I would just slide the engine forward a couple inches, and not have to modify the firewall. You will have to run the short water pump if you do. That is what I did with my '66 Suburban. __________________ 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

10-15-2012, 02:57 AM	#6
argonaut Senior Member Join Date: Aug 2008 Location: Long Beach, CA Posts: 1,813	Re: Installing big block in a 64 k30 I second that. Since you aren't running a stock 4-speed with the bellhousing crossmember it should be easy for you to just slide the whole thing forward. __________________ Jason M. @argonaut62 1972 K5 Blazer CST, Turquoise 1966 K20 Short Fleet Pickup, Big Ugly 1964 C10 Short Fleet, Gertrude 2001 Porsche 911 Carrera 1996 Ford Bronco XLT 1980 Jeep Wagoneer 2008 Honda CBR1000RR 2005 Honda RC51 1981 Honda CB750C No dis-assemble Johnny Five! No dis-assemble!

10-15-2012, 01:13 PM	#7
1963c-10 Registered User Join Date: Nov 2011 Location: fayetteville nc Posts: 10,338	Re: Installing big block in a 64 k30 Rocktonka....what wire looms did you use to route the wires down the valve covers. They give it a very clean look. __________________ 1963 Short bed step side SBW 427 big block and borg warner T-16 HD 3 speed manual http://67-72chevytrucks.com/vboard/s...d.php?t=519869 1963 Short bed fleetside BBW 348 1st gen big block w/Powerglide http://67-72chevytrucks.com/vboard/s...d.php?t=619024 1964 Short bed trailer

10-15-2012, 09:10 PM	#8
alyslo Registered User Join Date: Aug 2012 Location: Troutdale Oregon Posts: 13	Re: Installing big block in a 64 k30 Thanks for all the pics and info guys!

10-16-2012, 08:48 AM	#11
1963c-10 Registered User Join Date: Nov 2011 Location: fayetteville nc Posts: 10,338	Re: Installing big block in a 64 k30 Thanks to both of you. They just look real clean...i like it. __________________ 1963 Short bed step side SBW 427 big block and borg warner T-16 HD 3 speed manual http://67-72chevytrucks.com/vboard/s...d.php?t=519869 1963 Short bed fleetside BBW 348 1st gen big block w/Powerglide http://67-72chevytrucks.com/vboard/s...d.php?t=619024 1964 Short bed trailer

11-17-2012, 02:56 PM	#12
alyslo Registered User Join Date: Aug 2012 Location: Troutdale Oregon Posts: 13	Re: Installing big block in a 64 k30 Looks good! What did you use for headders?

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