Author Topic: Rebuilding a 472...  (Read 533 times)

Offline Scot Minesinger

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Re: Rebuilding a 472...
« Reply #20 on: November 26, 2017, 08:07:53 AM »
Chiming in here and adding the customary 2 cents, where my goal is a mostly original look, but improved perfromance:

1.  Modified stock intake manifold from MTS, where they machine interior of it, gets more torque
2.  Modified cam - your choice - this heavy car will never be a racer, would go for the mid performance upgrade, not extreme, as normal driving will not be as nice
3.  Modified exhaust manifolds, smoothed out on interior.
4.  Stock heads modified by MTS with larger intake and exhaust valve sizes
5.  10 to 1 pistons, that is on my 1970 and it never knocks
6.  Get the 1970 pulley set up to eliminate the air pump (MTS sells a kit)
7.  Of course, standard stuff, like timing chain, and etc.

I have done the performance intake (item 1) on my 1970 Cadillac RWD 472only (and of course already have items 5, 6 and 7 done).  If I ever tear into the engine again will do items, 2, 3, and 4. 

Also, I doubt the snorkel allows full air flow the carb will manage, so would install it upside down for normal running and right side up for shows only. 
 
Fairfax Station, VA  22039 (Washington DC Sub)
1970 Cadillac DeVille Convertible
1970 Cadillac Sedan DeVille
1970 four door Convertible w/Cadillac Warranty

Offline Roger Zimmermann

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  • Name: Roger Zimmermann
Re: Rebuilding a 472...
« Reply #21 on: November 26, 2017, 08:28:23 AM »
Scot, what MTS does means ? I tried with google, without a good result.
1956 Sedan de Ville (sold)
1956 Eldorado Biarritz
1957 Eldorado Brougham
1972 Coupe de Ville (not yet arrived)
2011 DTS
CLCMRC benefactor #101

Offline TJ Hopland

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Re: Rebuilding a 472...
« Reply #22 on: November 26, 2017, 09:23:57 AM »
MTS's site is http://www.500cid.com/

Maximum Torque Specialists.   I started using 'them' when it was AL in Wisconsin in the early 2000's.   I think it goes back to the 90's at least maybe even before Al.  I don't think Al was much more than a shop that really liked these engines.    AL sold to Marty who was a big time enthusiast in the mid 2000's who moved the operation to CA and really grew it.   He took it from enthusiast to a full blown operation with a warehouse and staff and everything.  I believe within the last few years they even bought out or merged with the machine shop that was doing a lot of the work so now its all under one roof.  So they are pretty much one stop shopping.   They distribute new and used parts as well as full rebuild machine shop.  They also work with the 'big' names to get or keep parts for these engines coming as well as design and commission their own parts.   Marty was the key and usually the one you got if you called.  He was the kind of guy that if you just needed to order a nut you could spend a half hour chatting if you wanted to so pretty much everyone felt like they knew him and I would imagine gave him great insight to the customers too.   Marty got hit with what now seems the typical not the worst cancer that should be manageable for a while that suddenly turns and you are gone.  Marty's brother Paul had work with him the whole time and has kept things going.  I have not needed anything the last several years so I have not really been keeping up on what the current status or offerings are but they do seem to still have a good rep on the forums.
StPaul/Mpls, MN USA

73 Eldo convert w/FiTech EFI
75 Eldo rusty but trusty
80 Eldo Diesel
And other assorted stuff I keep buying for some reason

Offline "Cadillac Kid" Greg Surfas 15364

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Re: Rebuilding a 472...
« Reply #23 on: November 26, 2017, 09:26:55 AM »
MTS Stands for Maximum Torque Specialties, now known as 500CID. http://www.500cid.com/
Greg Surfas
Cadillac Kid-Greg Surfas
CLC #15364
66 Coupe deVille (now gone to the UK)
72 Eldo Cpe  (now cruising the sands in Quatar)
73 Coupe deVille
75 Coupe deElegance
76 Coupe deVille
79 Coupe de ville with "Paris" (pick up) option and 472 motor
514 inch motor now in '73-

Offline Roger Zimmermann

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Re: Rebuilding a 472...
« Reply #24 on: November 26, 2017, 09:33:17 AM »
Thanks Greg for the right name!
1956 Sedan de Ville (sold)
1956 Eldorado Biarritz
1957 Eldorado Brougham
1972 Coupe de Ville (not yet arrived)
2011 DTS
CLCMRC benefactor #101

Online cadillacmike68

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  • Still finishing up this 1968
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  • Name: M Santos
Re: Rebuilding a 472...
« Reply #25 on: November 26, 2017, 10:51:23 PM »
Chiming in here and adding the customary 2 cents, where my goal is a mostly original look, but improved perfromance:...
Also, I doubt the snorkel allows full air flow the carb will manage, so would install it upside down for normal running and right side up for shows only.

That's true. Another possibility is drilling some holes along the bottom of the housing to let more air in. But then you are cutting an original part. You could also get a chrome cap that only covers the air cleaner and then put your regular one on for shows. This would keep your original cover from getting all scratched up when it it is installed upside down...
Regards,
"Cadillac" Mike
Current:
1968 DeVille Convertible
1996 Fleetwood Brougham
2009 STS NorthStar Platinum ed RWD
2011 CTS PRemiun ed Sedan RWD
Past:
2008 CTS Premium ed Sedan AWD
2005 CTS Hi-Feature Sedan RWD
2000 ElDorado ESC Hard Boot Convertible
1995 Fleetwood Brougham
1973 Sedan DeVille
1970 Fleetwood Brougham
1969 DeVille Convertible