: cadillac 472-500 oem ALUMINUM intake???



lesinfamous
01-03-11, 11:55 PM
http://cgi.ebay.com/ebaymotors/472-500-CID-CADILLAC-ALUMINUM-GM-INTAKE-MANIFOLD_W0QQcmdZViewItemQQhashZitem3363cabcaeQQit emZ220717563054QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5 fAccessories

Did GM make an aluminum version of their stock intake for the 472,500?? I had no idea...how rare are these? And would it work with my 1975 fleetwood?? Any benefits besides weight savings??

cadillac_al
01-04-11, 07:54 AM
Interesting and strange; I didn't realize the 472 had a different firing order than other GM V8's and it looks like the cylinders are numbered differently too. It's been a long time since I worked on my old 472.

albymangled
01-04-11, 08:14 AM
here's a bunch of firing orders

....just for the hell of it...

1-8-4-3-6-5-7-2 1988 Chrysler Fifth Avenue, Chevrolet Small-Block engine
1-8-7-2-6-5-4-3 GM LS engine, Toyota UZ engine
1-3-7-2-6-5-4-8 Porsche 928, Ford Modular engine, 5.0 HO
1-5-4-8-7-2-6-3 BMW S65
1-6-2-5-8-3-7-4 Straight-8
1-8-7-3-6-5-4-2 Nissan VK engine
1-5-4-2-6-3-7-8 Ford Windsor engine
1-5-6-3-4-2-7-8 Cadillac V8 engine 368, 425, 472, 500 only
1-5-3-7-4-8-2-6 Ferrari Dino V8 (F355)
1-2-7-8-4-5-6-3 Holden V8

why so many variations?




beats me...

drmenard
01-04-11, 07:23 PM
This is a rip off.. the intake is off a 1980 368 motor... it will bolt on a 472-500, but the runners are almost half the size of the stock intake.. don't be fooled by these...

csbuckn
01-04-11, 09:57 PM
This is a rip off.. the intake is off a 1980 368 motor... it will bolt on a 472-500, but the runners are almost half the size of the stock intake.. don't be fooled by these...

I'm glad you cleared that up, I was racking my brain trying to figure this out.

lesinfamous
01-05-11, 01:50 PM
drmenard, thanks for clearing that up!!! Something didn't look right to me but i couldn't quite put my finger on it. Great job!

peganit2
03-21-15, 10:15 PM
This is an old thread I know, but I'm compelled to respond.

The truth is, those firing orders aren't different at all. The real difference in those differences, is, how the cylinders are labeled.

IIRC there are just two different firing orders in common American V8s. Most Fords, all older Chevies, Olds, Buick, Pontiac and others all use the most common one, and a few others use the other one, including HO Small block Fords, 351W Fords, and the Cadillacs.

It's about the forces on the crankshaft. The less common firing order does not fire the driver side two rear cylinders consecutively like the common one does.

the APEMAN
03-22-15, 11:39 AM
And the ebay link now shows aluminum manifolds that really work on 472/500.

csbuckn
03-22-15, 12:48 PM
Brought back an old thread but good info. Never really noticed firing order versus labeled cylinders. Ape, that's funny the link has the right stuff now. I see those edels are going up in price.

the APEMAN
03-22-15, 03:59 PM
I'd almost buy one of those.

peganit2
03-23-15, 06:52 PM
I need a damaged one for cheap that I can fix and use for my 78 Coupe Deville.

Anyone?:drool: