Restoring a 1935 Oldsmobile F35 is a rewarding project, but finding the correct suspension parts can be challenging. This guide covers the key components, where to source them, and what to consider during restoration. Whether you are aiming for a concours-level finish or a reliable driver, understanding your options will help you make informed decisions.
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Rare Parts RP26050 - DIAMOND SERIES DRAG LINK REPAIR KIT - FRONT - OLDSMOBILE 1935-36 - MADE IN THE
Understanding the 1935 Oldsmobile F35 Suspension System
The 1935 Oldsmobile F35 used a solid front axle with semi-elliptic leaf springs and a live rear axle with longitudinal leaf springs. This system is robust but demands periodic replacement of worn bushings, springs, and shock absorbers. The steering column connects to a worm-and-sector gearbox, and tie rods and drag links control the front wheels. Knowing the layout is essential for ordering the right parts.
Front Suspension Components
Front suspension parts include the axle beam, kingpins, spindle bolts, spring shackles, and main leaf springs. The front leaf springs are typically 36 inches long with 6 to 8 leaves. Shock absorbers are lever-arm type, originally manufactured by Delco or Houdaille. Many restorers convert to modern telescopic shocks, but originality advocates prefer rebuilding original shocks.
Rear Suspension Components
The rear suspension uses a solid axle with semi-elliptic leaf springs, often with 7 to 9 leaves. The rear shackles, U-bolts, and spring pads are common wear points. The rear shock absorbers are also lever-arm style. The torque tube and radius rods help locate the axle, and their bushings should be inspected.
Original vs. Reproduction Parts
For 1935 Oldsmobile F35 suspension parts, you have three choices: NOS (New Old Stock), high-quality reproductions, or used parts. Each has trade-offs.
Pros and Cons of Original Parts
Original NOS parts are the gold standard for authenticity, but they are increasingly rare and expensive. They often require cleaning and painting. Used original parts may have hidden wear, especially in bushings and spring leaves. If you find a set of original springs, have them re-arched and re-tempered by a spring shop.
Pros and Cons of Reproduction Parts
Reproduction springs are available from specialty vendors. They are made to factory specifications but may have slightly different steel quality. Bushings and shackle kits are widely reproduced. The main drawback is that some reproduction parts may not fit perfectly and require filing or shimming. Stick with trusted brands that specialize in vintage Oldsmobile parts.
How to Verify Authenticity and Quality
Check that reproduction parts have the correct number of leaves, correct bolt patterns, and original-style markings. For springs, measure the arch height and center bolt length. Original Oldsmobile parts often have a diamond-shaped logo or part number stamped into the metal. Join online forums like the Oldsmobile Club of America to get recommendations on reputable suppliers.
Where to Find 1935 Oldsmobile F35 Suspension Parts
Sourcing parts for a 1935 Oldsmobile F35 requires patience and networking. Do not rely on generic auto parts stores; they will not stock parts for a 90-year-old vehicle.
Specialty Vintage Car Parts Suppliers
Several national vendors cater to pre-war GM cars. Companies like CARS Inc. (Chevrolet and Oldsmobile parts) and Kanter Auto Products offer many chassis components. Bob's Automobilia and The Filling Station also stock leaf springs, shackles, and kingpin sets. Always call ahead to verify availability for the F35, as not all parts are listed online.
Online Forums and Clubs
The Oldsmobile Club of America and the AACA (Antique Automobile Club of America) have members who sell or trade parts. The “Oldsmobile Pre-War” Facebook group is active. Post a wanted ad with specific part numbers. You can also search classifieds on sites like Hemmings Motor News.
Salvage Yards and Swap Meets
Vintage car salvage yards (e.g., Desert Valley Auto Parts, French Lake Auto Parts) occasionally have 1930s Oldsmobiles. Swap meets like Hershey (AACA Fall Meet) or Carlisle GM Nationals are goldmines for NOS suspension parts. Bring a parts manual and measuring tools to ensure compatibility.
Installation and Restoration Considerations
Replacing suspension parts on a 1935 Oldsmobile F35 is labor-intensive. Safety should be your first priority.
Safety and Structural Integrity
Always support the frame with jack stands and never rely on the leaf springs alone. When removing spring shackles, use a spring compressor. Inspect the frame for cracks or rust, especially near the spring hangers. If the frame is compromised, address it before suspension work.
Professional vs. DIY
If you are experienced with pre-war vehicles, you can replace leaf springs and bushings yourself. However, aligning the front axle and setting the caster angle may require a shop that specializes in solid-axle cars. Rebuilding lever-arm shocks is a niche skill; sending them to a specialist like Filling Station or Apple Hydraulics is often more cost-effective.
Recommended Parts Checklist for a Basic Suspension Overhaul
- Front leaf spring set (correct rate and arch)
- Rear leaf spring set
- Kingpin set (includes bushings, bearings, and seals)
- Spring shackle kit (front and rear, with bushings and bolts)
- Shock absorber rebuild or replacement (lever-arm type)
- Steering drag link and tie rod ends (check for wear)
- Torque tube and radius rod bushings
- U-bolts and spring pads
- Grease fittings and chassis lubricant
Final Recommendation
Start by inspecting every component of the suspension. Replace worn bushings and spring shackles first, as they affect ride quality and alignment. For springs, choose original or high-quality reproductions from a vendor that specializes in your car’s make and model. If you are restoring to original condition, invest in NOS or correctly rebuilt parts. For a driver, use modern shock absorbers (with adapter brackets) to improve safety. Always cross-reference part numbers with a 1935 Oldsmobile F35 parts manual. With careful sourcing and proper installation, your F35 will ride like it did in the 1930s—firm, floaty, and full of character.