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Technical Information for your Cadillac engine

The following is a short list of technical documents for your convenience.
We have a large archive of technical information, articles, how-to, diagnostic guides, etc.
We will be adding more to this page as time allows.
Many of these files are in Adobe Acrobat PDF format. You can get the viewer for free at Adobe.com

General '68-'85 472/500/425/368 Cadillac Engine Tech

Engine ID Guide (PDF)
This guide is for the 472/500/425/368 engine family, and includes pictures, casting numbers, and notes to aid in positively identifying exactly which version of this engine family you are looking at.

Engine Building Basics (PDF)
Basic instructions, tips, tricks, and specs for assembling your Cadillac engine

Ignition Timing Troubleshooting Guide (PDF)
Instructions for troubleshooting and correcting problems with your ignition system, or checking for a suspected problem. If you are having any kind of overheating, drivability, or power problems, this guide may ne what you need.

Alternator Wiring Guide (PDF)
Instructions (with diagrams) for re-wiring a car that originally had an externally regulated alternator, to work with an internally regulated alternator. These instructions are specific to GM vehicles that originally had an externally regulated alternator and a dummy light. Many other makes, including generator cars, will be similar.

Swap Guide - BB Caddy into '54-'62 Cadillac v1.1(PDF)
A basic swap guide (with pictures) for installing a Cadillac 472 / 500 / 425 / 368 engine into a 1954, 1955, 1956, 1957, 1958, 1959, 1960, 1961, or 1962 Cadillac car. This can be a very rewarding swap, when finished, and does not require much in the way of specialty equipment, but it is not a simple drop-in job. This guide aims to provide a basic working knowledge of ways to overcome the obstacles that make so many avoid this swap. Updated 4/17/13.
Old version (10% of the file size): Swap Guide - BB Caddy into '54-'62 Cadillac v1.0(PDF)


Tech Videos
for '68-'85 472/500/425/368 Cadillac Engines

Basic Q-jet Tutorial. Part One - Set-up and 'How Stuff Works'. (Facebook Video)
This video will walk you through the basic set-up and base tuning of a Q-jet. It's Helpful to go through this setup whenever you are first installing a carb (new or used) on an engine, or have just made major changes to the engine.

Basic Q-jet Tutorial. Part Two - Basic Troubleshooting: Flooding symptoms. (Facebook Video)
This video will walk you through checking for the common causes of flooding symptoms, without disassembling the carburetor. Checking for a stuck / sunk fload, clearing debris from the needle and seatm and checking for a stuck power valve.

Dyno Tour and Crate Engine Break-In. (Facebook Video)
This video gives you a look into our dyno facility, and what we do with crate engines before shipping.

Timing Chain Installation and Cam Gear Bolts. (Facebook Video)
Timing chain installation with multiple key-way or single key-way timing sets. Also, a good show-and-tell on the issue with cam gear bolt length.

Premium Main Girdle Installation (Facebook Video)
Installation of Cad Company's premium main girdle assembly for high powered Cadillac 472 / 500 engines.

Dipstick Tube Installation (Facebook Video)
Installation of Cad Company's stainless steel dipstick tube for Cadillac 472 / 500 / 425 / 368 engines. This information is also a good guide for installing other new or used dipsticks in these engines, as well as the '50-'67 331 / 365 / 390 / 429 Cadillac engines with the dipstick tube going through the block.


Performance Parts Installation Instructions
for '68-'85 472/500/425/368 Cadillac Engines

Cam Timing Instructions (PDF)
Instructions for installing and setting up a Cadillac Camshaft

Cloyes Roller Timing Chain Set Instructions (PDF)
Instructions for installing and degreeing a Cloyes Roller Timing Set for Cadillac 472/500/425/368 engines.

Stage I Shaft Rocker Assemly Installation Instructions (PDF)
Basic instructions for installing our Stage 1 Shaft Rocker assembly and setting lifter preload. This is the current version of the Stage I Rockers we are selling at this time. A similar assembly has been sold by both us (as Stage 1), and by other vendors under various names over the years, but if you have a full shaft rocker assembly with stamped steel rocker arms, and a solid shaft, this is probably what you have.

Stage I 'OSA' Shaft Rocker Assemly Installation Instructions (PDF)
Basic instructions for installing our Stage 1 Shaft Rocker assembly and setting lifter preload. Similar assembly has been sold by both us (as Stage 1), and by other vendors under various names over the years, but if you have a full shaft rocker assembly with stamped steel rocker arms, a hollow shaft, and aluminum shaft supports, this is probably what you have.
If a magnet won't stick to the stands, they are aluminum...

Stage I 'OSI' Shaft Rocker Assemly Installation Instructions (PDF)
Basic instructions for installing our Stage 1 Shaft Rocker assembly and setting lifter preload. Similar assembly has been sold by both us (as Stage 1), and by other vendors under various names over the years, but if you have a full shaft rocker assembly with stamped steel rocker arms, a hollow shaft, and iron shaft supports, this is probably what you have.
If a magnet will stick to the stands, they are iron...

Stage III Shaft Rocker Assemly Installation Instructions (PDF)
Basic instructions for installing our Stage 3 Shaft Rocker assembly and setting lifter preload. If you have a full shaft rocker assembly with non-adjustible, non-roller-tip steel rocker arms, a full girdle, and a solid shaft, this is probably what you have.

Stage IIIB Shaft Rocker Assemly Installation Instructions (PDF)
Basic instructions for installing our Stage 3 Shaft Rocker assembly and setting lifter preload. If you have a full shaft rocker assembly with non-adjustible, non-roller-tip steel rocker arms, a full girdle, and a hollow shaft, this is probably what you have.

Stage IV Full Shaft Roller Rocker Assemly Installation Instructions (PDF)
Basic instructions for installing our Stage 4 Shaft Rocker assembly and setting up lifter preload or valve lash. This assembly, and others like it, has been sold by other vendors under various names over the years, but if you have a full shaft rocker assembly, with billet aluminum roller tip rocker arms and a full girdle, this is probably what you have (or close enough that the instructions will be useful to some extent).

Oversized Valve Installation Instructions for 76cc Heads (PDF)
Instructions for installing and setting up Cad Company's oversized valves for the '68-'73 76cc 'Small Chamber' cylinder heads.

Oversized Valve Installation Instructions for 120cc Heads (PDF)
Instructions for installing and setting up Cad Company's oversized valves for the '73-'76 120cc 'Large Chamber' cylinder heads.

Billet Aluminum R4 AC Bracket Kit Instructions (PDF)
Instructions for installing the Cad Company biillet aluminum bracket kit for using the R4 AC compressor.

Header Flange Kit instructions (PDF)
Instructions on using the Header Flange Kit to build or adapt headers for the Cadillac 472/500/425 engine.

'77-up Deville Header instructions (PDF)
Instructions on using the Header Flange Kit to build or adapt headers for the Cadillac 472/500/425 engine.

Chevy Truck Header instructions (PDF)
Instructions on using the Header Flange Kit to build or adapt headers for the Cadillac 472/500/425 engine.

Universal Motor Mount Kit Instructions (PDF)
Instructions for installing the Cadillac 472/500/425 engine in a modern car or truck (some 60's and most 70's and newer RWD Ford and GM cars) using our bolt-in motor mount kit.

G-body Bolt-In Motor Mount Kit (PDF)
Instructions for installing the Cadillac 472/500/425 engine in a G-body car ('78-'88 Malibu, Monte Carlo, El Camino, Cutlass, Regal, Grand Prix, etc) using our bolt-in motor mount kit.

Aluminum Oil Pan Instructions (PDF)
Instructions for installing the Cad Company finned aluminum rear sump oil pan on your Cadillac 472/500/425 engine.

Cadillac Oil Dipstick Tube Removal and Installation Instructions (PDF)
Instructions for removing and installing the dipstick tube (original, NOS, or aftermarket) in your Cadillac 472/500/425 engine. These instructions are equally valid for the earlier Caddy engines (such as '63 390 and 64-'67 429), except for the measurements.


Pages to help you determine exactly what to build

These are pretty old pages, but many customers over the years have found them useful to read through before contacting us to ask what combination they should build. At the least, it will give you an idea of what kinds of information we will want to know to recommend the right combination for your application.

Parametric Box
This page may help you sort out what priorites you need to adress when choosing a performance combination.

Usage Categories
A list of common usage categories for performance Cadillac engines. Usefull for filling out the parametric box, especially if you are not really sure what to call your project.

All materials are Cad Company, 2001-2009. Redistribution or public posting for non-commercial use is granted providing materials are distributed in their entirety and without modification. For other usage permission, please contact the webmaster.

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Cad Company
8333 Jefferson NE
Albuquerque, NM 87113
Tel: (505) 823-9340
FAX: (505) 797-0627


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