500 c.i. caddy engines - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Ricks1971** · 03-10-2009, 10:06 AM

I have six of these engines for sale. I would like to get $500 or best offer per engine.

Livrat · 03-10-2009, 11:11 AM

That's quite a stash of torque you have there!!
Just curious, In your first picture on the lower right side I see what appears to be a Ford Boss or Cobra finned aluminum valve cover.. At first I was thinking a Boss 302 or 351 cleveland, but they do not have an oil pressure port on the back of the block.. does it happen to be a 429/460 Cobra? Or just a Cobra valve covered big block?

**Ricks1971** · 03-10-2009, 11:22 AM

that is a 351 cleveland that's hard to find nice motor. Thats for sale too!
asking $500 obo for that too.

Critter · 03-10-2009, 11:46 AM

Somewhere Longhornman just got all kinds of excited

IAFF2407 · 03-10-2009, 11:47 AM

any of those a 1970 motor? are they from an Eldorado with the rear oil pan?
thx,
Al.

71cadc10 · 03-10-2009, 11:51 AM

if these are all truly 500's....you should contact MTS in Apple Valley. They may buy all 6.

marty@mtscadparts.com

IAFF2407 · 03-10-2009, 03:03 PM

MTS would want them but unfortunatly for maybe $200 a pop.

stllookn · 03-10-2009, 03:31 PM

Does the Cleveland have the 4V heads? I suspect not since it has a 2-barrel carb but I had to ask.

**Ricks1971** · 03-10-2009, 06:37 PM

I posted them at MTS and could only get one guy to comment on them. These ford are foreign to me how would I tell if it has 4V heads?

Livrat · 03-10-2009, 10:06 PM

Quote:

Originally Posted by Ricks1971

These ford are foreign to me how would I tell if it has 4V heads?

The 351C's had either 2V or 4V cast into the head between the intake and valve cover on one end or the other.. no real need to look since yours has a factory 2bbl on it they are 2V... the manifolds are not interchangable.. (well... they will bolt on... but there will be a BIG vacumn leak).

**Ricks1971** · 03-10-2009, 11:52 PM

Al, yes one is a 70 eldo with a rear pickup or sump but a guy from L.A. is buying it for alot of money. More money than I thought it was worth.

*FormerMember* · 03-17-2009, 10:58 PM

Quote:

Originally Posted by Ricks1971

Al, yes one is a 70 eldo with a rear pickup or sump but a guy from L.A. is buying it for alot of money. More money than I thought it was worth.

How much? It's worth more than 3K, if it has the right crank.

**67sss** · 03-17-2009, 11:53 PM

do you have any newer caddy motors? Need one for this STS.

**Ricks1971** · 03-18-2009, 12:10 AM

grendel, yes the 70 caddy engine that came out of the eldorado has the right crank as I have been told.

*FormerMember* · 03-18-2009, 08:18 AM

Quote:

Originally Posted by Ricks1971

grendel, yes the 70 caddy engine that came out of the eldorado has the right crank as I have been told.

So, hopefully you're getting the right money for it. I have one that I've refused to sell for 3K.

Have you been on the Caddy power board?

my67chevytruck · 03-18-2009, 09:02 AM

Grendel, what's the board, seems like i need to start looking for caddy motors

**Ricks1971** · 03-18-2009, 09:11 AM

http://forums.500cid.com/index.php

*FormerMember* · 03-18-2009, 09:17 AM

Quote:

Originally Posted by Ricks1971

http://forums.500cid.com/index.php

That's Marty's board...

Here's where all the Caddy power nuts go.

http://www.cadillacpower.com/forum/i...board,4.0.html

Can you get me the casting numbers on the 72 motor? Block and heads? How many miles on it?

GMC AMI · 03-18-2009, 09:38 AM

Quote:

Originally Posted by grendel

How much? It's worth more than 3K, if it has the right crank.

What is the right crank? 472's have the same crank in that year. In all the caddy big blocks I have run, 71's and up 500 or 472 run fine on pump reg.
All the older higher comp. engines need better fuel or you have to cut the timing way back to avoid the dreaded spark knock!

**Ricks1971** · 03-18-2009, 09:40 AM

Ill get that info tonight.

*FormerMember* · 03-18-2009, 09:44 AM

Quote:

Originally Posted by GMC AMI

What is the right crank? 472's have the same crank in that year. In all the caddy big blocks I have run, 71's and up 500 or 472 run fine on pump reg.
All the older higher comp. engines need better fuel or you have to cut the timing way back to avoid the dreaded spark knock!

No, actually they didn't. At least 3 different cranks available, Mike.

Also, I have a 70 Caddy that runs fine on 89 octane.

GMC AMI · 03-18-2009, 01:00 PM

Quote:

Originally Posted by grendel

No, actually they didn't. At least 3 different cranks available, Mike.

Also, I have a 70 Caddy that runs fine on 89 octane.

OK, I am not a expert so please point out which crank is best. My opinion only based on the caddy BB's I have run. What compression ratio are you at with the 70 motor? Thanks.

All caddy motors are some of the best Big block power Gm put out. So please buy from Rick if you are considering this fine upgrade. Not trying to step on your sale Rick. I loved the 500 I had in my truck.

*FormerMember* · 03-18-2009, 01:03 PM

Quote:

Originally Posted by GMC AMI

OK, I am not a expert so please point out which crank is best. My opinion only based on the caddy BB's I have run. What compression ratio are you at with the 70 motor? Thanks.

All the information you'd ever want on those motors is at Caddy Power.

10:1, stock.

Sorry for the hi-jack.

GMC AMI · 03-18-2009, 02:49 PM

[QUOTE=GMC AMI;3204845]You would be at the cut off point at 10: 1 as far as pump gas goes. A big block will do a bit better than a small block with that compression ratio run on pump gas. The 472 1969 engine I ran had a higher comp ratio 11to one or 11.25. Too old to remember which. Pump gas has been going downhill for a long time!!! Still a better engine for a truck than most Chevy motors. Sorry Chevy guys but this is very true!

IAFF2407 · 03-18-2009, 07:35 PM

the right crank #'s end in 094. The book states the the '70 motor is 10:1 comp, but up to date testing puts it at 9.4:1. from a collector's stand point that is the crank to have, for $3000.... I don't know... the other cranks are strong as well only slightly less. the higher comp comes from the desirable 76cc heads. (904's and the newer 950's) engine HP rating (ways of testing) changed in 1971, that is the main difference for the HP drop in the '71 and newer 500's.

Al.

03-10-2009, 10:06 AM	#1
Ricks1971 Senior Member Join Date: Mar 2006 Location: Clarkrange Tennessee Posts: 1,787	500 c.i. caddy engines I have six of these engines for sale. I would like to get $500 or best offer per engine.

03-10-2009, 11:11 AM	#2
Livrat Member #1049 Join Date: Jun 2000 Location: Troy Montana Posts: 3,940	Re: 500 c.i. caddy engines That's quite a stash of torque you have there!! Just curious, In your first picture on the lower right side I see what appears to be a Ford Boss or Cobra finned aluminum valve cover.. At first I was thinking a Boss 302 or 351 cleveland, but they do not have an oil pressure port on the back of the block.. does it happen to be a 429/460 Cobra? Or just a Cobra valve covered big block?

03-10-2009, 11:22 AM	#3
Ricks1971 Senior Member Join Date: Mar 2006 Location: Clarkrange Tennessee Posts: 1,787	Re: 500 c.i. caddy engines that is a 351 cleveland that's hard to find nice motor. Thats for sale too! asking $500 obo for that too.

03-10-2009, 11:46 AM	#4
Critter Future TOTM Winner Join Date: Aug 2006 Location: Bulverde, TX Posts: 2,692	Re: 500 c.i. caddy engines Somewhere Longhornman just got all kinds of excited __________________ 72 Chevy CST K5 HIGHLANDER BLAZER Getting a 6.0,NV4500,NP205,14BFF (Currently laying all over the place in little pieces) 72 Chevy swb step-side "LS" 6.0 Here's a build thread of sorts 2002 HD2500 Crew Cab, 8.1L Allison 4x4 Daily Driver Check it out www.lsdyno.com

03-10-2009, 11:47 AM	#5
IAFF2407 Registered User Join Date: Dec 2005 Location: White Rock Canada Posts: 865	Re: 500 c.i. caddy engines any of those a 1970 motor? are they from an Eldorado with the rear oil pan? thx, Al. __________________ 1972 GMC Sierra 1972 GMC Super Custom Suburban

03-10-2009, 11:51 AM	#6
71cadc10 Registered User Join Date: Apr 2004 Location: Boiling Springs, PA Posts: 435	Re: 500 c.i. caddy engines if these are all truly 500's....you should contact MTS in Apple Valley. They may buy all 6. marty@mtscadparts.com __________________ 71 C10 long bed, 2003 6.0L, 06GTO E40, T56, 12bolt 4.10 rear Last edited by 71cadc10; 03-10-2009 at 11:51 AM.

03-10-2009, 03:03 PM	#7
IAFF2407 Registered User Join Date: Dec 2005 Location: White Rock Canada Posts: 865	Re: 500 c.i. caddy engines MTS would want them but unfortunatly for maybe $200 a pop. __________________ 1972 GMC Sierra 1972 GMC Super Custom Suburban

03-10-2009, 03:31 PM	#8
stllookn Saving 1 truck at a time! Join Date: Aug 2001 Location: Kent, WA Posts: 6,465	Re: 500 c.i. caddy engines Does the Cleveland have the 4V heads? I suspect not since it has a 2-barrel carb but I had to ask. __________________ '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)

03-10-2009, 06:37 PM	#9
Ricks1971 Senior Member Join Date: Mar 2006 Location: Clarkrange Tennessee Posts: 1,787	Re: 500 c.i. caddy engines I posted them at MTS and could only get one guy to comment on them. These ford are foreign to me how would I tell if it has 4V heads?

03-10-2009, 11:52 PM	#11
Ricks1971 Senior Member Join Date: Mar 2006 Location: Clarkrange Tennessee Posts: 1,787	Re: 500 c.i. caddy engines Al, yes one is a 70 eldo with a rear pickup or sump but a guy from L.A. is buying it for alot of money. More money than I thought it was worth.

03-17-2009, 11:53 PM	#13
67sss Registered User Join Date: Nov 2002 Location: Mt. Vernon, WA.. Posts: 2,325	Re: 500 c.i. caddy engines do you have any newer caddy motors? Need one for this STS. Attached Images

03-18-2009, 12:10 AM	#14
Ricks1971 Senior Member Join Date: Mar 2006 Location: Clarkrange Tennessee Posts: 1,787	Re: 500 c.i. caddy engines grendel, yes the 70 caddy engine that came out of the eldorado has the right crank as I have been told.

03-18-2009, 09:02 AM	#16
my67chevytruck Under Construction Join Date: Oct 2007 Location: Midlothian,TX (DFW) Posts: 4,555	Re: 500 c.i. caddy engines Grendel, what's the board, seems like i need to start looking for caddy motors __________________ Heath subscribe to the board here: http://67-72chevytrucks.com/vboard/payments.php http://67-72chevytrucks.com/vboard/s...d.php?t=157669 FAQ how to's 1956 Chevy Apache 1967 C10 SWB FleetSide (under construction) 1969 K10 SWB FleetSide (Future Build) 1972 C10 SWB Stepside (Future Build) 56 chevy truck : http://www.cardomain.com/ride/2955823/1 67 truck build: http://www.67-72chevytrucks.com/vboard/showthread.php?t=281357/1 69 k10: http://67-72chevytrucks.com/vboard/s...d.php?t=389470

03-18-2009, 09:11 AM	#17
Ricks1971 Senior Member Join Date: Mar 2006 Location: Clarkrange Tennessee Posts: 1,787	Re: 500 c.i. caddy engines http://forums.500cid.com/index.php

03-18-2009, 09:40 AM	#20
Ricks1971 Senior Member Join Date: Mar 2006 Location: Clarkrange Tennessee Posts: 1,787	Re: 500 c.i. caddy engines Ill get that info tonight.



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03-18-2009, 02:49 PM	#24
GMC AMI Registered User Join Date: Apr 2004 Location: The Other Maine! Posts: 2,236	Re: 500 c.i. caddy engines [QUOTE=GMC AMI;3204845]You would be at the cut off point at 10: 1 as far as pump gas goes. A big block will do a bit better than a small block with that compression ratio run on pump gas. The 472 1969 engine I ran had a higher comp ratio 11to one or 11.25. Too old to remember which. Pump gas has been going downhill for a long time!!! Still a better engine for a truck than most Chevy motors. Sorry Chevy guys but this is very true! __________________ 1968 Chevy 4x4 307 4 speed

03-18-2009, 07:35 PM	#25
IAFF2407 Registered User Join Date: Dec 2005 Location: White Rock Canada Posts: 865	Re: 500 c.i. caddy engines the right crank #'s end in 094. The book states the the '70 motor is 10:1 comp, but up to date testing puts it at 9.4:1. from a collector's stand point that is the crank to have, for $3000.... I don't know... the other cranks are strong as well only slightly less. the higher comp comes from the desirable 76cc heads. (904's and the newer 950's) engine HP rating (ways of testing) changed in 1971, that is the main difference for the HP drop in the '71 and newer 500's. Al. __________________ 1972 GMC Sierra 1972 GMC Super Custom Suburban Last edited by IAFF2407; 03-18-2009 at 07:38 PM.

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