Air and Fuel Delivery



The Flash says: “You can shop ‘til you drop when it comes to fuel systems for the big Caddy, Or you can call Cad Company and get everything, including a high performance mechanical fuel pump, with one call.

Intake Manifolds

Please check hood clearance before ordering.
Most aftermarket intakes raise the carb 4”-5” over stock height.

Edelbrock Intake Cad Company PRO/Cad™ III Ported Aluminum Dual Plane Intake $445.00
Use where performance gains in bottom end and mid-range (to 5500) are desired. Most effective when used with ported or aluminum cylinder heads. See gaskets and bolts below. This intake will raise your carb roughly 4" above stock. Made in USA
Edelbrock™ 2115 cast hi rise manifold $360
(less effective at low RPMs, less $$) This intake will raise your carb roughly 4" above stock.

Cad Company PRO/Cad™ IV Dual Plane Dominator Intake $650.00
Use where performance gains in mid-range and top end (to 6800) are the most important,
but a dual plane intake is still desired. The PC-IV features a large plenum for Dominator carburetor,
intake ports raised and widened for competition cylinder heads. This intake will raise your carb roughly 5" above stock. Made in USA

Single Plane Intake Small Single Plane Intake
Available with standard or Dominator carb flange.
This is the old Bulldog™ style intake. Cast-in injector bungs for fuel injection (or port-nitrous) as available, but no gaurantees on whether they will work with your setup.
Options include pre-drilled injector bungs, fuel rail setups, etc. This intake will raise your carb roughly 4" above stock.

Standard square bore (4150) style $695
Dominator style $695

Cast Tunnel Ram Intake BoogieMan™ Single Plane Intake $695
This is the king of the hill when it comes to single carb intakes. Recommended for Big Bad Cads only.
Currently only available with the Dominator style carb flange. All intakes have full sized injector bungs, with plenty of room for most styles of injectors. This intake will raise your carb quite a bit more than 4" higher than stock. Made in USA.


Cast Tunnel Ram Intake BM1480 BoogieMan™ Tunnel Ram $695
Does not include top plate. Large plenum, short runner competition intake. The hot ticket for running multiple carbs and high RPM. Available with cast or CNC carb adapters for various applications (i.e. single or dual 4bbl or Dominator, 3X2, etc). Cast-in injector bungs. Made in USA
BM1482 Billet 2X4 Top Plate for mounting dual 4-barrels. $275
Specify Standard or Dominator style. Made in USA
BM1483 Billet Blower Mounting Plate For mounting 6-71 and 8-71 blowers. $360
With provision for mounting standard pop off valve (not included) behind the blower. Made in USA
Available for other blower mounting patterns by special order.

BM1483v Pop-off Valve Made in USA $40
BM1473s Pop-off Spring Retainer Made in USA $20
BM1484 Heavy-duty Laser Cut Steel Valley Pan Made in USA $40


Engine with blower Blower Kit When cubic inches aren’t enough from $5800
Complete with Intake, 8-71 blower plate, BDS 8-71 Blower, dual carb adapter, tensioner, belt, blower drive, billet steel crank hub, and accessory drive crank pulleys.
Makes ~ 8 PSI on most non-strokers at 1:1 drive.

For Stage II blower, add $200 for 10 PSI (500 CID) or 8 PSI (strokers) at 1:1 drive ratio.
Polishing, carbs, linkages, plumbing, and bigger blowers are also available.
Kit components available separately. We do not recommend running blowers smaller than 8-71.

Composite Intake Gaskets for aluminum intakes $25 Except BoogieMan™ heads
Composite Intake Gaskets for BoogieMan™ heads $35
Flange Head Stainless Intake Bolt Kits $25
EGR Block Off for OE intakes, billet aluminum $25.00

Fuel Pumps

When it comes to fuel pumps, there is no such thing as too much capacity. During testing, we found that on even medium level street engines, well under 400 HP, fuel pressure supplied by the standard ‘high flow’ replacement pump dropped off to the point of having to stop the pull less than halfway through as the carb’s fuel bowl was emptied, resulting in detonation. Note that these pulls were only 8 seconds at WOT, and most hot rods see more extended periods of WOT than that…

The other consideration is too much pressure - Cad Company’s High Performance fuel pumps tend to generate enough pressure to unseat the needle valve during pressure spikes, such as sudden deceleration, causing a flooded engine. Running a High Performance pump on any engine without a pressure regulator is strongly discouraged. Note that these pressure spikes could cause a ruptured fuel pump diaphragm in some cases, with or without a pressure regulator, without a return line installed. A return line will also greatly reduce the chance of vapor lock.

OE Replacement Pump $95
w/ or w/o return line fitting

80 GPH Fuel Pump Chrome Mechanical Fuel Pump $175.00 Recommended for engines between 25 and 75 HP over stock.
Use of an inline pressure regulator is highly recommended.

High Performance Mechanical Fuel Pump $255 Supports 550+ HP on gasoline, Made in USA
Pressure regulator not recommended

Racing Mechanical Fuel Pump $375 Supports up to 1100 HP on gasoline, Made in USA
Pressure regulator not recommended

Adjustable Fuel Pressure Regulator $55
Strongly recommended w/ chrome Pump
W/ dual outlets for double pumpers or for running a pressure gauge

Adjustable Bypass Style Fuel Pressure Regulator $150
Recommended for use with electric fuel pumps
3-12 PSI for carbureted applciations

Adjustable Bypass Style Fuel Pressure Regulator $170
Recommended for use with electric fuel pumps
3-60 PSI for fuel injected applciations

Billet Steel Fuel Pump Eccentric $40

Billet Aluminum Fuel Pump Block Off $20

Carburetors

Remanufactured Q-Jet Q-Jet $435
This is a ‘Stage 1.5’ Quadrajet, completely remanufactured from an original Rochester core to keep the reliability and economy. These carburetors feature upgrades such as bushed throttle shafts, modified air bleeds, and more.
They are tuned to our specs based on the dyno testing outlined in the Dyno Results on pages 5-7. Ideal for engines from stock to +250 HP.
Available with Cadillac or Chevy style throttle linkage. Cadillac style carbs are available with electric or divorced chokes (heat operated choke actuator not included). Please verify manifold and linkage compatibility before ordering. Made in USA

Q-jet Tuning Kit $59
If you’ve modified your engine - cam, intake, etc - we’ve found a substantial power gain can be had by re-calibrating the carb. This combination of jets, metering rods, and hangers will get you in the right range! This is also a good starting point if your carb is way off due to previous tuning efforts.

Q-jet Rebuild Kit - gaskets, acc. pump, etc $35 and up
Please specify carb number when ordering.

Street Demon 625 CFM $375
Well suited for street applications for 331, 365, 390, and 429 CID engines with square bore or 4-jet (pre-'67) style intake manifolds. Features include electric choke, vacuum secondaries, and great looks. Solid 1-peice upper / lower throttle arm makes hooking up '66-older reverse operation throttle linkages (relatively) easy. 'Goggle valve' (oval) secondary provides spread-bore-like bottom end torque, drivability, and MPG, in a carb compatible with non-spread-bore intake manifolds
Comes standard in ball-burnished aluminum finish. Polished finish available for additional charge. Ploy fuel bowl also available for an additional charge.

Street Demon 750 CFM $395
Well suited for higher powered street and circle track / road racing applications for 331, 365, 390, and 429 CID engines with square bore or 4-jet (pre-'67) style intake manifolds. Features include electric choke, vacuum secondaries, and great looks. Solid 1-peice upper / lower throttle arm makes hooking up '66-older reverse operation throttle linkages (relatively) easy. 'Goggle valve' (oval) secondary provides spread-bore-like bottom end torque, drivability, and MPG, in a carb compatible with non-spread-bore intake manifolds
Comes standard in ball-burnished aluminum finish. Polished finish available for additional charge. Ploy fuel bowl also available for an additional charge.

High Performance Carburetors
While the carburetors above are generally the best bet for most street engines, we carry a variety of other carburetors to suit every need. From the basics such as Edelbrock, Holley, Holley Dominators, and Demons to high end gas or alcohol carburetors such as those from C&S, and Quick Fuel Technologies.

Fuel Lines

AF4001 5/16" Steel Fuel Line $45
Pre-bent for OE '72-older fuel pump w/ return line outlet on pump and OE '68-'72 Cadillac Q-jet on OE intake. Made in USA

AF4001-SS 5/16" Stainless Steel Fuel Line $60
Pre-bent for OE '72-older fuel pump w/ return line outlet on pump and OE '68-'72 Cadillac Q-jet on OE intake. Made in USA

AF4002 3/8" Steel Fuel Line $45
Pre-bent for OE '73-'76 fuel pump and OE '73-'79 Cadillac Q-jet on OE intake. Made in USA

AF4002-SS 3/8" Stainless Steel Fuel Line $60
Pre-bent for OE '73-'76 fuel pump and OE '73-'79 Cadillac Q-jet on OE intake. Made in USA

Air Cleaners

Spun Aluminum Air Cleaner (and Julie) K&N Air Filter For stock air cleaner assemblies $95

K&N 2 ½” Air Filter $90 Recommended for most aftermarket 14” air cleaner assemblies

Moroso 5” Air Filter $40 Recommended for our spun aluminum deep dish air cleaner assembly

Stainless Mesh 5” Air Filter $55 Recommended for our spun aluminum deep dish air cleaner assembly, for off road use only

Chrome Air Cleaner Kit flat base, includes filter $45

Chrome Air Cleaner Kit drop base, includes filter $40
Requires 1” spacer to clear stock AC compressor with stock intake.
Clears stock hood on most applications.

Spun Aluminum Air Cleaner Center Mount 	 	 Base Spun Aluminum Air Cleaner
Deep drop base, recommend 3 1/2” or taller filter
Venturi effect dish shape and cone built into lid to direct air into carb
Will not clear stock AC compressor. Will clear stock Caddy hood with 5” filter.

Spun Aluminum Air Cleaner Offset 	 	 Mount Base Spun Aluminum Air Cleaner Drop Base, Center mount Made in USA $35 recomended for Q-jets.
Spun Aluminum Air Cleaner Drop Base, Offset mount Made in USA $35
Spun Aluminum Air Cleaner Top With integral air deflection cone Made in USA $30 Fits most 14" air cleaners

Spun Aluminum Air Cleaner Top

Spun Aluminum Air Cleaner Kit $80
Includes spun aluminum base, top, 5" Moroso high performance air filter element, and stud kit

Air Cleaner Stud Kit, universal $5 Not for offset air cleaners

We also offer a variety of other styles of air cleaners. Call for more information.

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Cad Company
The originators of performance parts for the Cad 472"/500"/425" !