S-10 4.3 V6 High-Performance Replacement Mount Kit for 1988–2004 S-10 Trucks & Blazers

S-10 4.3 V6 High-Performance Replacement Mount Kit for 1988–2004 S-10 Trucks & Blazers

S10-4.3HP2wd
  • $95.00


Why You Might Need This Kit. The stock S10 4.3 V6 engine mounts can fail in performance applications, allowing the headers to hit the frame, the engine to hit the hood, or the fan to damage the fan shroud. The mounts in JTR's kit prevent such problems but are soft enough to limit vibration and noise for street-driven vehicle use.

Don't Let Your Current Mounts Fail (or Fail Again). The stock S10 4.3 V6 engine mounts use large, soft rubber isolators to reduce engine vibrations that go into the cab of the S10 trucks. The soft rubber isolators are not well suited for performance applications because they allow too much engine movement, which can lead to problems with headers contacting the frame and the steering shaft, as well as axle hop problems.

Because the stock 4.3 V6 mounts are made from rubber bonded to steel, the mounts often fail when the rubber tears away from the steel, allowing the engine to contact the hood. The fan can also contact the fan shroud, damaging the fan and shroud.

What's in the Kit and Why

Stealth Conversion's high-performance 4.3 V6 mount kit combines Chevrolet 2.8 V6 S-10 replacement mounts with rubber isolaters (part # S10-106) and the JTR 2.8 to 4.3 V6 adaptor plates (part # S10-109).

S10 V6 High-Performance Motor Mount Assembly

The mounts in the kit are stiffer than the stock S10 4.3 V6 mounts but soft enough to be used on street driven vehicles without transmitting excessive noise and vibration into the truck. The 2.8 V6 replacement mount gains durability by surrounding the rubber with steel. This mount is the most common mount used in an S-10 V8 swap -- it has proven itself to be strong enough for even the most powerful V8’s, yet compliant enough to prevent noise and vibration from entering the cab.

This kit will bolt directly into most S-10 trucks and Blazers with the 4.3 V6, using the original mounting holes on the S-10 frame and on the 4.3 V6 engine. 

Ordering Note: Please specify whether the application is for 2WD or 4WD vehicles.

IMPORTANT: This kit will not work on ZR2 trucks
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Why Not Use the Corvette Motor Mount and Other Application Notes
Our 2.8 V6 mount is very similar to the mount used in the 1984-1991 Corvette. They both use rubber isolators surrounded by a steel shell. The Corvette mount will not bolt to the S-10 frame because the mounting holes are slightly different.

Comparison of Chevy rubber isolation engine mounts

The 2.8 V6 style rubber isolator is also used in stock 4.3 V6 Astro Vans. The reason we mention this is because the stock Chevy mounts are designed for the 4.3 V6 and are soft enough to keep the 4.3 V6 S-10 smooth and quiet in the S-10 application.

Yes, You Can Buy The Chevy Part, But ... Recently, the prices at Chevrolet have gone up quite a bit for 2.8 V6 rubber isolators, which now retail for over $110 each. That’s $220/pair, which is more than most people are willing to spend.

Our aftermarket 2.8 V6 rubber isolators are good quality although slightly stiffer than the stock Chevrolet 2.8 V6 mounts and similar in stiffness to the Corvette rubber isolator.

Polyurethane Mounts. If you want to use polyurethane mounts, you can use the polyurethane inserts for the Chevrolet brand 2.8 V6 mounts (part # S10-107). However, these will not fit into the aftermarket 2.8 V6 steel shell (shown below on the right) -- they will only fit in the Chevrolet 2.8 V6 steel shell (below center).

Polyurethane Inserts for S10 V6 Applications

The lowest cost way to use polyurethane mounts is to purchase the 2.8 to 4.3 V6 adapter mounts (S10-109), the polyurethane inserts (S10-107), and get the Chevrolet 2.8 V6 style of mount from a wrecking yard. The 2.8 V6 style of mount came on the following vehicles:1985-2005 Astro Vans with the 4.3 V6, 1982-1993 S-10's with the 2.8 V6, and the 1982-1992 Camaro's with the 2.8 V6 and 3.1 V6.

As a word of caution, the polyurethane mounts are very stiff, and transmit a noticeable amount of vibration into the truck. We do not recommend the polyurethane inserts on 4.3 V6 trucks and Blazers that are used as commuter vehicles.


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