cad 500 into suburban - The 1947 - Present Chevrolet & GMC Truck Message Board Network

curley1 · 03-02-2004, 08:40 PM

hey all: I'm looking to put a CAD 500 and th400 into a suburban. Still trying to get the right suburban

I have a couple of questions though. (1) Do I have to get an adapter to use a chev TH400, or can I use a B.O.P TH400? (2) Do I have to use an ELDO oil pan? However, I found the caddy I want the the local wrecker, this guy wants to sell the whole car. It's a '70 ELDO. From what I hear it's the best one with 10:1 compression an d small chamber heads. But on the down side, the giudes must be changed and premium pump gas must be used. Does anyone know of any other possible problems I might run into doing this swap?

Thanks,

Curley

68 Suburban · 03-02-2004, 08:48 PM

Check out Longhorn Man's site:

http://geocities.com/caddyoneton/

**BOSS** · 03-02-2004, 09:20 PM

That site helps alot,I am also doing the 500 swap soon.I have ask Andy(Longhorn Man) lots of questions so far and he is and will be a great help through this.

Longhorn Man · 03-03-2004, 12:43 AM

Personally, i would go for a later engine. You'll get teh HEI and all the parts needed for it, and I am very fond of the cheap gas...esp with the prices these days. (asuming your rig will be some what of a saily driver)
I would say screw your chevy tranny and get a BOP one. The adapter would add to the total length of the engine as measured from fan to tranny, and even though it isn't much, space is not something you have to spare with this monster.
I used an eldo pan on mine, but that's just becouse that's what the engine had on it. I couldn't tell you if another would work better, but I can't imagine a mid sump or front sump working better since these trucks were designed for the rear sump.
Something to look into, try to snag the oil filter housing/pump assembly (externally mounted up front on passenger side) off of a later 425. Theses take up less room and do not require you to chop up the front cross member like the 472/500 parts do.

highboy_04 · 03-03-2004, 01:05 AM

i'm still trying to get rid of my th400 caddy tranny.

**BOSS** · 03-03-2004, 09:11 AM

highboy if only i had a way to get it here.Do you ever come to springfield?

highboy_04 · 03-03-2004, 10:40 PM

i have cousins in nevada. i dont know how close that is.

**BOSS** · 03-03-2004, 10:55 PM

I havent heard of it before.I am in Norwood.

highboy_04 · 03-03-2004, 10:57 PM

hmmm i dont know, we dont go up there much.

highboy_04 · 03-03-2004, 11:01 PM

do you know anyone who would be down in this area sometime soon?

curley1 · 03-04-2004, 09:57 PM

Thanks guys for the sugestions. I pmd Longhorn man and he has helped me a lot. The biggest help was to ID a 500 from a 472 which is very difficult with the engine assembled. The difference is the stoke, he told me to use a wire in a plug hole and make 2 marks, one at BDC and one at TDC if 4" then a 472 if 41/3-41/2 then a 500. The morons at the local wrecking yards call them all 500's. I would be pissed when I get the motor and a re-ring kit and find out I have the wrong motor

So, about the tranny, good I found a BOP TH400 that I can get cheap and rebuild(junk yard). For now still waiting to find the beast to put it in.

curley

03-02-2004, 08:40 PM	#1
curley1 Registered User Join Date: Jan 2004 Location: los banos, ca Posts: 84	cad 500 into suburban hey all: I'm looking to put a CAD 500 and th400 into a suburban. Still trying to get the right suburban I have a couple of questions though. (1) Do I have to get an adapter to use a chev TH400, or can I use a B.O.P TH400? (2) Do I have to use an ELDO oil pan? However, I found the caddy I want the the local wrecker, this guy wants to sell the whole car. It's a '70 ELDO. From what I hear it's the best one with 10:1 compression an d small chamber heads. But on the down side, the giudes must be changed and premium pump gas must be used. Does anyone know of any other possible problems I might run into doing this swap? Thanks, Curley

03-02-2004, 08:48 PM	#2
68 Suburban Registered User Join Date: Oct 2000 Location: From Chicago, Live in Phoenix, AZ Posts: 6,802	Check out Longhorn Man's site: http://geocities.com/caddyoneton/ __________________ Just sitting here contemplating contemplation.

03-02-2004, 09:20 PM	#3
BOSS Just here to help Join Date: Jan 2002 Location: Norwood,Mo Posts: 3,893	That site helps alot,I am also doing the 500 swap soon.I have ask Andy(Longhorn Man) lots of questions so far and he is and will be a great help through this. __________________ Support our site Norwood Survivor

03-03-2004, 01:05 AM	#5
highboy_04 Registered User Join Date: Mar 2003 Location: kansas Posts: 1,071	i'm still trying to get rid of my th400 caddy tranny. __________________ '67 c10 350/th350

03-03-2004, 09:11 AM	#6
BOSS Just here to help Join Date: Jan 2002 Location: Norwood,Mo Posts: 3,893	highboy if only i had a way to get it here.Do you ever come to springfield? __________________ Support our site Norwood Survivor

03-03-2004, 12:43 AM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Personally, i would go for a later engine. You'll get teh HEI and all the parts needed for it, and I am very fond of the cheap gas...esp with the prices these days. (asuming your rig will be some what of a saily driver) I would say screw your chevy tranny and get a BOP one. The adapter would add to the total length of the engine as measured from fan to tranny, and even though it isn't much, space is not something you have to spare with this monster. I used an eldo pan on mine, but that's just becouse that's what the engine had on it. I couldn't tell you if another would work better, but I can't imagine a mid sump or front sump working better since these trucks were designed for the rear sump. Something to look into, try to snag the oil filter housing/pump assembly (externally mounted up front on passenger side) off of a later 425. Theses take up less room and do not require you to chop up the front cross member like the 472/500 parts do.

03-03-2004, 10:40 PM	#7
highboy_04 Registered User Join Date: Mar 2003 Location: kansas Posts: 1,071	i have cousins in nevada. i dont know how close that is. __________________ '67 c10 350/th350

03-03-2004, 10:55 PM	#8
BOSS Just here to help Join Date: Jan 2002 Location: Norwood,Mo Posts: 3,893	I havent heard of it before.I am in Norwood. __________________ Support our site Norwood Survivor

03-03-2004, 10:57 PM	#9
highboy_04 Registered User Join Date: Mar 2003 Location: kansas Posts: 1,071	hmmm i dont know, we dont go up there much. __________________ '67 c10 350/th350

03-03-2004, 11:01 PM	#10
highboy_04 Registered User Join Date: Mar 2003 Location: kansas Posts: 1,071	do you know anyone who would be down in this area sometime soon? __________________ '67 c10 350/th350

03-04-2004, 09:57 PM	#11
curley1 Registered User Join Date: Jan 2004 Location: los banos, ca Posts: 84	cad 500 into burb Thanks guys for the sugestions. I pmd Longhorn man and he has helped me a lot. The biggest help was to ID a 500 from a 472 which is very difficult with the engine assembled. The difference is the stoke, he told me to use a wire in a plug hole and make 2 marks, one at BDC and one at TDC if 4" then a 472 if 41/3-41/2 then a 500. The morons at the local wrecking yards call them all 500's. I would be pissed when I get the motor and a re-ring kit and find out I have the wrong motor So, about the tranny, good I found a BOP TH400 that I can get cheap and rebuild(junk yard). For now still waiting to find the beast to put it in. curley



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.