Caddy swap update... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Longhorn Man · 08-25-2002, 04:26 PM

This is interesting...
Seems everyone I have spoken to about the caddy engine says that you either have to gat an engine filter relocation kit, or do this;

Here is the interesting part. I have the 425 hanging from the hoist as I type this (thanks again mike) and bolted to the tranny, (unmoved) The drivers side valve cover is just barely touching the firewall by the clutch hole, sitting down in the frame rails further down that it will end up, yet my filter does not need moved.

*racedvl* · 08-25-2002, 04:47 PM

My goodness Andy, I thought you've been driving that baby by now!!

Longhorn Man · 08-25-2002, 04:47 PM

Also, I found that i won't have to do this;

(the cutting) to run my pipes.
I am able to tuck it all in like this;

and this;

The drivers side does have a nub on the manifold that needs grinded off, and the brake lines are also touching the manifold, so they'll need moved too, but so far it's looking pretty good. Here is a pic of the valve cover touching teh fire wall, which brings up another thread all together.

da-burb · 08-25-2002, 04:57 PM

Cad used 3 different oil filter housings from what I have read. Only one of them requires the torch to make it work. It looks like you have the second type which works in most trucks and the third type which is nearly verticle and works the best.

I am watching your progress with great interest. It could be the Cad 500 in my machine shed that is causing it.

stllookn · 08-25-2002, 05:41 PM

Andy, I like the new MC and manifolds...can't you do something about that block? It would make it feel better and run better if it were painted...LOL! They have feelings, don't ya know?

Longhorn Man · 08-25-2002, 06:02 PM

Trust me, it'll be pretty when it goes back in there...I was just mocking it up today.

68 Suburban · 08-25-2002, 06:15 PM

Andy, you have said how expensive gaskets are for your 425 engine. Will this set work? It seems cheap enough.

http://cgi.ebay.com/ebaymotors/ws/eB...tem=1853475817

*Gee_Emm* · 08-25-2002, 06:16 PM

How about when you give her, the engine will tilt that way, is there enough clearance for that?

Longhorn Man · 08-25-2002, 08:27 PM

Hey Chris...FRIKEN WOW!!!!! Gotta get that!
Gee Emm....I have given some thought to that, and this was just a mock up, but thanks.
Da-Burb...never heard that one. I know the one off the 472 is the same as the one mounted on there.
Here is a shot that shows how much engine to firewall room there is too.(gotta have some there)

da-burb · 08-25-2002, 09:12 PM

I did a little mis-remembering, but I found my caddy swap papers. The oil filter housing on most 472's and 500's point the filter away from the engine and can cause problems. The fix on this was to use the 425 filter housing which tucks the filter in closer. When using this one, the filter will be ok, worst case is to use the small chev filter. Third option is the remote filter.

*racedvl* · 08-25-2002, 09:55 PM

Got her running yet?

68 Suburban · 08-25-2002, 09:56 PM

4th option-Run a Chevy engine :p

*Gee_Emm* · 08-25-2002, 10:39 PM

You gotta love the ease of changing spark plugs on that engine

Longhorn Man · 08-26-2002, 12:17 AM

Da-Burb...thanks for the info on that. Even with all I've looked at, I never read about that.
racedvl, not yet, still need to install the gaskets that 68sub just pointed out..need them desparatly. Plus I need to take one of the motor mount towers in to work and get it trimmed...getting closer though.

Longhorn Man · 08-26-2002, 12:18 AM

GeeEmm...I noticed that too...That is somethign i was kinda scared of with such a big ass engine.

*racedvl* · 08-26-2002, 05:14 PM

Is it on the road yet????

72LNGHRN · 08-27-2002, 12:31 PM

This caddy engine swap must be the in thing to do. I went and looked at a 72 longhorn on Saturday popped the hood and there it was a big ass 500 caddy motor. Looked like a pretty clean install . The only cutting it looked liked he did was at the cross member for the oil filter. Unfortunatly I couldnt come up with the $800 dollars quick enough to snag it.

O'l Buck · 08-27-2002, 01:01 PM

dang andy, your frame is strongly resembling the frame on my 49, which now has a 350 olds sitting between the rails......btw...it's a F@rd F-3

bad pic....but here it is

brennecke · 08-27-2002, 01:45 PM

I see you have clearance for the filter, but will it scew on and off?
A little BFH on the firewall ought to give you some room there.
Keep us posted. This is very interesting to me.
500!!! HEE HEE HEE HEE

**Yukon Jack** · 08-28-2002, 04:48 PM

It's cool seeing something different like that being worked in. I'm sure I don't have the know how to tackle that. Keep us posted.

Longhorn Man · 08-28-2002, 04:57 PM

As it was sitting in there like that, I was able to spin it off and on no problem.
I agree on doing somethign differant, one of the reasons I'm doing it.

jku72 · 08-28-2002, 05:34 PM

I am sure you know it, but just in case....there are several suppliers specializing in Cadillac engine build ups, and they have useful tips as well, such as use ARP rod bolts from a 401 AMC to strengthen bottom end, and the difference between the filter housings, and difference between Eldo oil pans and deville models. Also, I used a nice "warm" cam in my 472 buildup. As you likely also know, edelbrock makes a performer intake that works wonders. I am thinking of the name of the supplier, the one I used was the I believe to be the now defunct "Cadillac Motorsports development", but another has sprung up in its place, but the name escapes me.
I am struggling to remember more, I built my cad engine when I was still in high school, so it was a while ago....

lux hauler · 08-28-2002, 06:26 PM

"Cadillac Motorsports Development" was purchased by "Flashcraft". It's now called "Cad Company".
www.cad500parts.com

Hooter · 08-28-2002, 06:30 PM

Dont rev that thing passed 4500 rpm or it will have the same fate as the old pass creek jumping caddy my friend and i had, never seen a connecting rod come through a fender before

Longhorn Man · 08-28-2002, 07:21 PM

thanks for the info guys, I'm doing this on a burger and frys buget...actually, INSTEAD of burger and frys...
There will be no speed goodies on this pig for quite a while, I have some heads here that will breath better and bump up the compression one point, but that will be later after I can spend some $$ on it. That intake will cost $250, so it too is not in the near future.
If there is problems at 4500 RPM, it's a turd motor. Red line for a stock caddy engine is 5000, and the main weak point before connecting rods is rocker retainers.

08-25-2002, 04:26 PM	#1
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Caddy swap update... This is interesting... Seems everyone I have spoken to about the caddy engine says that you either have to gat an engine filter relocation kit, or do this; Here is the interesting part. I have the 425 hanging from the hoist as I type this (thanks again mike) and bolted to the tranny, (unmoved) The drivers side valve cover is just barely touching the firewall by the clutch hole, sitting down in the frame rails further down that it will end up, yet my filter does not need moved. Attached Images

08-25-2002, 04:47 PM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Also, I found that i won't have to do this; (the cutting) to run my pipes. I am able to tuck it all in like this; and this; The drivers side does have a nub on the manifold that needs grinded off, and the brake lines are also touching the manifold, so they'll need moved too, but so far it's looking pretty good. Here is a pic of the valve cover touching teh fire wall, which brings up another thread all together. Attached Images

08-25-2002, 04:57 PM	#4
da-burb "Ochre Ogre" Join Date: Apr 2000 Location: Springfield, MN Posts: 3,558	Cad used 3 different oil filter housings from what I have read. Only one of them requires the torch to make it work. It looks like you have the second type which works in most trucks and the third type which is nearly verticle and works the best. I am watching your progress with great interest. It could be the Cad 500 in my machine shed that is causing it. __________________ Bowtie Truck Stop Inc. Mid-West GM Truck Restoration Parts Supplier Your Key Parts, Auto Metal Direct, Dynacorn, and Goodmark dealer. like us @ www.facebook.com/BowtieTruckStop 1971 C-10 Suburban (Ochre) 1971 K-10 Suburban (Ochre) 1972 C-10 Suburban (Ochre) 1972 K-20 Suburban (Yellow- that just aint right!) Springfield, Minnesota 56087

08-25-2002, 05:41 PM	#5
stllookn Saving 1 truck at a time! Join Date: Aug 2001 Location: Kent, WA Posts: 6,465	Andy, I like the new MC and manifolds...can't you do something about that block? It would make it feel better and run better if it were painted...LOL! They have feelings, don't ya know? __________________ '68 C20 Longhorn 50th Anniversary 400/TH400 '68 C20 Longhorn 50th Anniversary 468/TH400w/buckets '72 C20 Halfhorn (Longhorn w/o cab and front clip) '69 Flxible Cruiser (look up ugly in the dictionary)

08-25-2002, 06:15 PM	#7
68 Suburban Registered User Join Date: Oct 2000 Location: From Chicago, Live in Phoenix, AZ Posts: 6,802	Andy, you have said how expensive gaskets are for your 425 engine. Will this set work? It seems cheap enough. http://cgi.ebay.com/ebaymotors/ws/eB...tem=1853475817 __________________ Just sitting here contemplating contemplation.

08-25-2002, 04:47 PM	#2
racedvl Account Suspended Join Date: Jan 2000 Location: Woodstock, IL Posts: 7,020	My goodness Andy, I thought you've been driving that baby by now!!

08-25-2002, 06:02 PM	#6
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Trust me, it'll be pretty when it goes back in there...I was just mocking it up today.

08-25-2002, 06:16 PM	#8
Gee_Emm Account Suspended Join Date: Sep 2000 Posts: 3,991	How about when you give her, the engine will tilt that way, is there enough clearance for that?

08-25-2002, 08:27 PM	#9
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Hey Chris...FRIKEN WOW!!!!! Gotta get that! Gee Emm....I have given some thought to that, and this was just a mock up, but thanks. Da-Burb...never heard that one. I know the one off the 472 is the same as the one mounted on there. Here is a shot that shows how much engine to firewall room there is too.(gotta have some there) Attached Images

08-25-2002, 09:12 PM	#10
da-burb "Ochre Ogre" Join Date: Apr 2000 Location: Springfield, MN Posts: 3,558	I did a little mis-remembering, but I found my caddy swap papers. The oil filter housing on most 472's and 500's point the filter away from the engine and can cause problems. The fix on this was to use the 425 filter housing which tucks the filter in closer. When using this one, the filter will be ok, worst case is to use the small chev filter. Third option is the remote filter. __________________ Bowtie Truck Stop Inc. Mid-West GM Truck Restoration Parts Supplier Your Key Parts, Auto Metal Direct, Dynacorn, and Goodmark dealer. like us @ www.facebook.com/BowtieTruckStop 1971 C-10 Suburban (Ochre) 1971 K-10 Suburban (Ochre) 1972 C-10 Suburban (Ochre) 1972 K-20 Suburban (Yellow- that just aint right!) Springfield, Minnesota 56087

08-25-2002, 09:55 PM	#11
racedvl Account Suspended Join Date: Jan 2000 Location: Woodstock, IL Posts: 7,020	Got her running yet?

08-25-2002, 09:56 PM	#12
68 Suburban Registered User Join Date: Oct 2000 Location: From Chicago, Live in Phoenix, AZ Posts: 6,802	4th option-Run a Chevy engine :p __________________ Just sitting here contemplating contemplation.

08-25-2002, 10:39 PM	#13
Gee_Emm Account Suspended Join Date: Sep 2000 Posts: 3,991	You gotta love the ease of changing spark plugs on that engine

08-26-2002, 12:17 AM	#14
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	Da-Burb...thanks for the info on that. Even with all I've looked at, I never read about that. racedvl, not yet, still need to install the gaskets that 68sub just pointed out..need them desparatly. Plus I need to take one of the motor mount towers in to work and get it trimmed...getting closer though.

08-26-2002, 12:18 AM	#15
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	GeeEmm...I noticed that too...That is somethign i was kinda scared of with such a big ass engine.



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08-26-2002, 05:14 PM	#16
racedvl Account Suspended Join Date: Jan 2000 Location: Woodstock, IL Posts: 7,020	Is it on the road yet????

08-27-2002, 12:31 PM	#17
72LNGHRN Registered User Join Date: Mar 2000 Location: Tucson AZ USA Posts: 241	This caddy engine swap must be the in thing to do. I went and looked at a 72 longhorn on Saturday popped the hood and there it was a big ass 500 caddy motor. Looked like a pretty clean install . The only cutting it looked liked he did was at the cross member for the oil filter. Unfortunatly I couldnt come up with the $800 dollars quick enough to snag it. __________________ 72LONGHORN 350 CI TURBO 400 A/C P/S P/B HEAVY DUTY SPRINGS ALL THE BELLS AND WHISTLES. TUCSON,AZ. 2005 4X4 DODGE RAM 1500 "HEMI"LARAMIE 1961 OLDS DYNAMIC 88 394 4BBL UNDER CONST.

08-27-2002, 01:01 PM	#18
O'l Buck Recovering Truck Driver Join Date: Mar 2002 Location: Orleans, NE USA Posts: 1,883	dang andy, your frame is strongly resembling the frame on my 49, which now has a 350 olds sitting between the rails......btw...it's a F@rd F-3 bad pic....but here it is Attached Images __________________ 67 K-20 350, SM465, Eaton rear, 4.56 no spin option 00 Dodge 2500 4x4, 24V cummins, 5 speed Chad South Central Nebraska

08-27-2002, 01:45 PM	#19
brennecke Registered User Join Date: Apr 2000 Location: Missouri Posts: 469	I see you have clearance for the filter, but will it scew on and off? A little BFH on the firewall ought to give you some room there. Keep us posted. This is very interesting to me. 500!!! HEE HEE HEE HEE __________________ Never tire of doing what is right II Thess. 3:13 Northeast Missouri 71 LWB original 350 3/speed Soon to be 500

08-28-2002, 04:48 PM	#20
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,686	It's cool seeing something different like that being worked in. I'm sure I don't have the know how to tackle that. Keep us posted. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

08-28-2002, 04:57 PM	#21
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	As it was sitting in there like that, I was able to spin it off and on no problem. I agree on doing somethign differant, one of the reasons I'm doing it.

08-28-2002, 05:34 PM	#22
jku72 Registered User Join Date: Jan 2002 Location: cornville, maine Posts: 659	I am sure you know it, but just in case....there are several suppliers specializing in Cadillac engine build ups, and they have useful tips as well, such as use ARP rod bolts from a 401 AMC to strengthen bottom end, and the difference between the filter housings, and difference between Eldo oil pans and deville models. Also, I used a nice "warm" cam in my 472 buildup. As you likely also know, edelbrock makes a performer intake that works wonders. I am thinking of the name of the supplier, the one I used was the I believe to be the now defunct "Cadillac Motorsports development", but another has sprung up in its place, but the name escapes me. I am struggling to remember more, I built my cad engine when I was still in high school, so it was a while ago.... __________________ jku Cornville, Maine 68 C10 burb 42 Willys MB 46 Dodge WF-32 1.5 ton 53 & 56 Olds' 60 Cadillac 22 Dodge Brothers

08-28-2002, 06:26 PM	#23
lux hauler Psycho-billy Member Join Date: Jul 2001 Location: about 40 miles west of Cleveland, Ohio Posts: 2,591	"Cadillac Motorsports Development" was purchased by "Flashcraft". It's now called "Cad Company". www.cad500parts.com __________________ '72 C-10 350 w/Lunati Voodoo cam (207/213, .437/.454), Performer intake, 625 Road Demon Jr. and Hooker headers. Support your community, support yourself. Buy local, buy American (or Canadian).

08-28-2002, 06:30 PM	#24
Hooter My other Love Join Date: Aug 2001 Location: Castlegar B.C. Canada Posts: 4,085	Dont rev that thing passed 4500 rpm or it will have the same fate as the old pass creek jumping caddy my friend and i had, never seen a connecting rod come through a fender before __________________ Castlegar B.C.The great white North (Canada Eh!) Hooter_5@hotmail.com First generation Monte Carlo club pictures of my life

08-28-2002, 07:21 PM	#25
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,690	thanks for the info guys, I'm doing this on a burger and frys buget...actually, INSTEAD of burger and frys... There will be no speed goodies on this pig for quite a while, I have some heads here that will breath better and bump up the compression one point, but that will be later after I can spend some $$ on it. That intake will cost $250, so it too is not in the near future. If there is problems at 4500 RPM, it's a turd motor. Red line for a stock caddy engine is 5000, and the main weak point before connecting rods is rocker retainers.

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