Last fall I made a custom drop base for my Trans Am. The drop base is needed in order to fit the shaker under the factory hood when using aftermarket parts that raise the intake flange (mounting point for carburetor/throttle body) higher than factory. Before I go any further, I want to make it clear that I do not recommend building your own drop base. I spent about $150 on materials, an initial 8 hours making the drop base, plus endless hours afterward trying to make it work. The final product was not as I hoped. See the photos to see the results. Please consider one of the solutions I list next before making your own drop base. A permanent drop base solution is to do one of the following. Get a drop base from a reputable Pontiac supplier… All of the above solutions are a compromise. All of the above require that your shaker is cut in order to function properly. The Airaid solution utilizes the traditional round air filter method. The good thing about this solution is that other than the drop base itself, the air filter is sealed like factory with a round air cleaner lid.

The disadvantage is air turbulence created when the air first flows into the shaker, then around the air cleaner lid then through the filter. I did blow some air with a fan through the filter at angles and could not tell if it was impacting the speed of the air but I think it is a concern none the less. More importantly it puts a smaller clearance between the actual carburetor and the lid top which is restrictive. If you are running a throttle body, that clearance may not be as critical, but if you are using a quadrajet, the secondary walls may be very close to the top of the air cleaner lid. The rectangular air filter solution requires that your shaker be modified to allow air to flow through the square filter. This solution presents the same issue as the Airaid filter in that the air flows through the filter at an angle. One advantage is the air only has to make one turn, rather than flow around a lid then up and into the carb/throttle body. The biggest drawback to this solution is sealing.

Air filtration could be breached around the edges from the plate that is glued to the top of your shaker as well as from the gab between your shaker and drop base. One solution to this problem is a re-designed shaker. I have a few ideas but no time to make them a reality. Another solution is to redesign a completely different air filter lid. French Door Refrigerator Water Dispenser OnlyPerhaps someone can take inspiration from the K&N filter lid I modified to build something better.Cheapest Place To Buy Applaws Cat Food I do not recommend building your own drop base, but for those who want to know how I built mine, here are the quick and dirty instructions.German Shepherd Mix Puppies For Sale In Maine

I used a K&N drop base #3549, a 16″ diameter 1.5″ deep pizza pan, and an Airaid #801-452 filter (14″ diameter on the bottom and 10.75″ diameter at the top), and a K&N filter lid #66-1101. I cut a hole in the pizza pan and then used bolts with rivet style heads and lock washer nuts to fasten the drop base to the pizza pan. Other than drilling holes for the rivet style bolts, I did not modify the drop base. I also modified the filter lid with a slight cut in order for it to clear the shaker. Once I put this all together I was initially quite pleased with the results. The shaker did not rub against the filter lid with my relief cut in the filter lid which was initially my primary concern. What I did not anticipate was the shaker not fitting properly on the pizza pan because the diameter was exactly 16″ in diameter, whereas the factory air cleaner lid was actually 16-1/2″ in diameter. To compensate, I added 4 pieces of metal at four corners. This worked except it allowed the lid to slowly turn.

A quick solution was then to add duct tape at each corner to provide enough friction for the top shaker not to move once the shaker ring is tightened. AS soon as I added duct tape to the assembly I realized this was not worth my time. I am going to take the factory intake off the motor and take a grinding wheel to it! The plan is to open up the holes to allow for a square bore to be mounted directly to it with the use of a very thin adapter (Edelbrock 2732). I will post when I do this. Butler Performance Custom Intakes Drop Base Unit for Pontiac TA Shakers Intake and Carb Spacers Copyright © 2016 Butler Performance. Check out popular questions We'll reply within 24 hours Mon - Fri 9:00 - 5:00 PM CST"Tomahawk" Stock Reproduction Valley Pan This valley pan is a reproduction of a stock 2-piece design that has been modified to clear all solid & hyd roller lifters. It’s steel design gives it great durability and fit as well as a stock look.  Includes provision for PCV.

**Not for Use w/ EGR Intakes, Tri-power or 301’s** "Tomahawk" Stock Reproduction Valley Pan-Will Work w/Roller Lifters (Silver Anodized / Can be Painted) **Not for Use w/ EGR Intakes, Tri-power or 301’s** Can Be Modified To Use With Aftermarket Blocks Pontiac Tomahawk Windage Tray (3/4 length)  *4.25" Stroke Cranks May Require Spacing / Not For Use With 4.5" Stroke* Pontiac ONE PIECE Steel Reinforced  Rubber Oil Pan Gasket PRO BILLET TIMING SET Pontiac Pro Billet Timing Set, Billet Gears, 9 Keyway Crank Sprocket Pontiac Pro Billet Timing Set, Billet Gears, 9 Keyway Crank Sprocket .005 Short for Line Bore Blocks Pontiac Pro Billet Timing Set, Billet Gears, 9 Keyway Crank Sprocket .010 Short for Line Bore Blocks POWDER COATED ALUMINUM VALLEY PANS ARE HERE Pontiac SILVER POWDER COATED Aluminum Valley Pan with PCV w/Bolts, Grommet & Gasket **Not for Use w/ EGR Intakes,Tri-power or 301*(INCLUDES INSTRUCTION SHEETS) Pontiac BLACK POWDER COATED Aluminum Valley Pan with PCV w/Bolts, Grommet & Gasket **Not for Use w/ EGR Intakes,Tri-power or 301*(INCLUDES INSTRUCTION SHEETS)

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We can do ANY bore size as well as Dish or Dome pistons for any compression ratio desired. We do rotating assemblies for Street to naturally aspirated high RPM Race Engines, as well as combos for nitrous, blower and turbo engines. Call or email with any questions or to place your order. SHAKER HOOD BREATHER FOR PONTIAC TRANS AMS Drop Base Shaker Hood Assembly for use with Edelbrock RPM Intake for '77 to '79(400) Trans Am to locate shaker hood scoop back to stock height   **WILL NOT WORK w/ 403(1979) or 301(1980-81) Shakers** Click here to see filter unit installed in upper shaker 1 2 Click here if you have a shaker from an Oldsmobile engine Engine Transport and Storage Cradle Self-tuning system — NO tuning experience or laptop needed Complete system includes mini ECU, wide-band O2 sensor, wiring harness, injectors, fuel pump kit & 4150 throttle body 4150 throttle body works with original carb-style linkage & accepts all OEM sensors Easy-to-use setup Wizard provides a comprehensive walk-through & system tunes itself

Voted 09’ Hot Rod & Restoration Show; "Best New Product Award"Fuel Pump Kit (Ez-EFI Specific)........................$359.9525 Ft Hose and Fitting Kit(Ez-EFI Specific...........$159.95EZ-EFI Master Kit(All 3 Kits Combined for a complete EFI Conversion)..........$2195.95 click HERE for more info NEW PERFORMANCE CAST IRON PONTIAC HEAD PACKAGE BUTLER PERFORMANCE / EDEL.CNC WIDE PORT HEADS IN STOCK CLICK FOR PICS AND PRICING Butler Performance Evac Pump Kit Vacuum Pump and Drive Kit. Produces Crank Case Vacuum to Improve Ring Seal, Prevent Blow By and Leaks, and Reduces Intake Charge Contamination click HERE for more listings and pictures Pontiac Alternator Relocation Kits These kits come with all the belts and brackets you need to move that alternator to either side of the block where it is out of your way! *GREAT WHEN USING ELECTRIC WATER PUMPS* IMAGE SHOWN WITH ALTERNATOR RELOCATION KIT AND EVAC PUMP KIT INSTALLED Polished Billet Aluminum Fuel Pump Block Off Plate-Ball Milled