big block cadillac(472/500) motors in '64-'66 trucks? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Woogeroo · 05-05-2007, 09:13 PM

Anybody have any information on putting the big block cadillac motors, the 472 and 500 in the 1964-1966 trucks?

setup, layout, motor mounts, transmissions used...

I'm just curious.

I know there is a truck over on the 67-72 side of this forum with a cad 500 in it...

-W

**Chevy Fleetside** · 05-06-2007, 10:04 AM

Try checking this site out W.. I am sure you will get an answer from them.. I was thinking about putting a caddy engine in my truck awhile back and ordered all the catalogs from them.. Now I am thinking of a Duramax Diesel running on Bio Diesel.. who knows ... http://www.cad500parts.com/

krue · 05-06-2007, 10:24 AM

Longhorn Man is the one with the caddy motor, or one of the ones.

jeffspower · 05-06-2007, 12:44 PM

It's an easy fit compared to the 67-72 trucks. No firewall work or trimming of anything if you use the Eldo pan & RWD exhaust manifolds, but the engine may have to sit forward a bit to avoid firewall work. The old vertical flow radiators don't have much surface area, so a 4 row or aluminum (better yet) will be needed. Are you wanting to do this on a 2 or 4wd? 4wd is a little trickier.

Woogeroo · 05-06-2007, 10:49 PM

jeffspower,

I'm just sorta kinda interested, poking around to see what all is involved.

It is more of a academic interest.

What are the problems between 2wd and 4wd ?

----

Chevy Fleetside,

I've thought that a duramax in a 64-66 3/4 ton or ton truck would be pretty nifty.

-W

1969k10stepside · 05-06-2007, 10:51 PM

The 4wds have the motor mounted farther back causing clearance issues

jeffspower · 05-06-2007, 11:05 PM

Yep, here's what I did on my '72 K20 to make it fit. It's a tight fit from all aspects. I put it in without a body lift originally. It's pictured with the 3" BL it has now. The lower part of the cutout would still have to be there even with the BL, and if you want to get the valve cover off without the BL, all as shown. I have a nice cab i'm going to put on someday. I plan on forming a recess & making it look OE next time

Tomsriv · 05-09-2007, 10:17 AM

I had a friend who put a Jaguar front end and a Cadillac 500 in his 55 Studebaker truck. It turned out real nice. But they are gutless motors unless you get a 1970 or earlier.

05-05-2007, 09:13 PM	#1
Woogeroo Registered User Join Date: Aug 2003 Location: tool box Posts: 3,115	big block cadillac(472/500) motors in '64-'66 trucks? Anybody have any information on putting the big block cadillac motors, the 472 and 500 in the 1964-1966 trucks? setup, layout, motor mounts, transmissions used... I'm just curious. I know there is a truck over on the 67-72 side of this forum with a cad 500 in it... -W

05-06-2007, 10:04 AM	#2
Chevy Fleetside Registered User Join Date: Sep 2006 Location: San Francisco Posts: 4,782	Re: big block cadillac(472/500) motors in '64-'66 trucks? Try checking this site out W.. I am sure you will get an answer from them.. I was thinking about putting a caddy engine in my truck awhile back and ordered all the catalogs from them.. Now I am thinking of a Duramax Diesel running on Bio Diesel.. who knows ... http://www.cad500parts.com/ Last edited by Chevy Fleetside; 05-06-2007 at 10:05 AM.

05-06-2007, 10:24 AM	#3
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,448	Re: big block cadillac(472/500) motors in '64-'66 trucks? Longhorn Man is the one with the caddy motor, or one of the ones. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

05-06-2007, 12:44 PM	#4
jeffspower Well, Whoop-dee-do! Join Date: Mar 2003 Location: Easton, Mo. pop.- me & scarcely a few others Posts: 2,302	Re: big block cadillac(472/500) motors in '64-'66 trucks? It's an easy fit compared to the 67-72 trucks. No firewall work or trimming of anything if you use the Eldo pan & RWD exhaust manifolds, but the engine may have to sit forward a bit to avoid firewall work. The old vertical flow radiators don't have much surface area, so a 4 row or aluminum (better yet) will be needed. Are you wanting to do this on a 2 or 4wd? 4wd is a little trickier. __________________ '68 GMC shortbox 4x4 350/SM465/T221- bought it in '83 SOLD '72 K20 500 Cad/TH400/NP205 SOLD '92 Chevy 2500 6.5 mech TD 4L80E crusty daily driver '72 Monte Carlo... sweet low mile toy '11 Dodge Challenger IE 392 6spd... midlife car

05-06-2007, 10:49 PM	#5
Woogeroo Registered User Join Date: Aug 2003 Location: tool box Posts: 3,115	Re: big block cadillac(472/500) motors in '64-'66 trucks? jeffspower, I'm just sorta kinda interested, poking around to see what all is involved. It is more of a academic interest. What are the problems between 2wd and 4wd ? ---- Chevy Fleetside, I've thought that a duramax in a 64-66 3/4 ton or ton truck would be pretty nifty. -W

05-06-2007, 10:51 PM	#6
1969k10stepside Registered User Join Date: Mar 2006 Location: USA Posts: 21,019	Re: big block cadillac(472/500) motors in '64-'66 trucks? The 4wds have the motor mounted farther back causing clearance issues

05-06-2007, 11:05 PM	#7
jeffspower Well, Whoop-dee-do! Join Date: Mar 2003 Location: Easton, Mo. pop.- me & scarcely a few others Posts: 2,302	Re: big block cadillac(472/500) motors in '64-'66 trucks? Yep, here's what I did on my '72 K20 to make it fit. It's a tight fit from all aspects. I put it in without a body lift originally. It's pictured with the 3" BL it has now. The lower part of the cutout would still have to be there even with the BL, and if you want to get the valve cover off without the BL, all as shown. I have a nice cab i'm going to put on someday. I plan on forming a recess & making it look OE next time Attached Images __________________ '68 GMC shortbox 4x4 350/SM465/T221- bought it in '83 SOLD '72 K20 500 Cad/TH400/NP205 SOLD '92 Chevy 2500 6.5 mech TD 4L80E crusty daily driver '72 Monte Carlo... sweet low mile toy '11 Dodge Challenger IE 392 6spd... midlife car

05-09-2007, 10:17 AM	#8
Tomsriv Registered User Join Date: Apr 2007 Location: Camarillo, CA Posts: 257	Re: big block cadillac(472/500) motors in '64-'66 trucks? I had a friend who put a Jaguar front end and a Cadillac 500 in his 55 Studebaker truck. It turned out real nice. But they are gutless motors unless you get a 1970 or earlier.

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