Buick GS 350 Performance Engines

Your One-Stop Shop For Trusted Buick GS 350 Performance Engines

If you’re in search of Buick GS 350 Performance Engines aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 22 Performance Engines from top brands with prices ranging from $7.99 to $855.99.

Beyond great prices, we stock trusted brands manufacturing all types of Performance Engines for your Buick GS 350.

And don’t forget to read customer reviews across all Performance Engines categories in our catalog. Buy with confidence by leveraging past customer experiences of our aftermarket and OEM parts.

At Advance Auto Parts, we don’t think top quality Performance Engines have to cost top dollar, and we prove it. Browse our top Buick GS 350 Performance Engines below, order online to ship to your home, or head into your nearest Advance Auto Parts location to get started.

Essential Buick GS 350 Performance Engines

Mr. Gasket – High Performance Thermostat – 160 Degree Brass & Copper (Part No.4363)

High Performance Thermostat - 160 Degree Brass & Copper

from

$29.49
Mr. Gasket High Performance Thermostats are designed to resist large variations of coolant pressure at high RPM (revolutions per minute). This allows them to fully open at correct temperature consistently regardless of engine RPM. The design also provides the high flow that engines operated a higher RPM need. This thermostat also features a copper/brass construction to further resist corrosion. Mr. Gasket High Performance / High Flow Thermostats are suitable for street, drag race, or oval track applications.

Product Features:
  • Opens at 160 Degrees
  • Designed to Resist Large Variations of Coolant Pressure at High RPM
  • Fully opens at Correct Temperature Consistently Regardless of engine RPM
  • For High Performance Street, Drag Race, and Oval Track
  • Copper & Brass Construction – Resists Corrosion
  • High Flow
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Mr. Gasket – High Performance Thermostat (Part No.4365)

High Performance Thermostat

from

$31.99
Mr. Gasket High Performance Thermostats are designed to resist large variations of coolant pressure at high RPM (revolutions per minute). This allows them to fully open at correct temperature consistently regardless of engine RPM. The design also provides the high flow that engines operated a higher RPM need. This thermostat also features a copper/brass construction to further resist corrosion. Mr. Gasket High Performance / High Flow Thermostats are suitable for street, drag race, or oval track applications.

Product Features:
  • Opens At 195 Degrees
  • Designed to Resist Large Variations of Coolant Pressure at High RPM
  • Fully Opens at Correct Temperature Consistently Regardless of Engine RPM
  • For High Performance Street, Drag Race, and Oval Track
  • Copper & Brass Construction – Resists Corrosion
  • High Flow
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Competition Cams – VALVE SEALS, TEFLON 3/8" 1 ST (Part No.505-16)

VALVE SEALS, TEFLON 3/8" 1 ST

from

$33.99
COMP Cams offers a complete line of valve stem seals, from the umbrella seals to the positive-stop Teflon seal. These seals are a must to keep unwanted oil from entering the combustion chamber through the clearance in the valve guides. The umbrella seal is normally used when a larger-than-stock diameter spring is used, in the case of a double spring, the positive-stop Teflon seal is used. The umbrella seals require no machining, but with the Teflon seal it is necessary to disassemble the heads and machine the top of the guide with a special .530 diameter cutter. Whenever you are planning an engine overhaul or a cam change, don’t forget the valve seals.

Product Features:
  • Work with .530″ guides and 3/8″ valve stem diameter
  • Valve stem oil seals keep unwanted oil from entering the combustion chamber
  • Several different types of valve seals are offered
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Competition Cams – VALVE SPRINGS, 1.437" SINGLE 1 ST (Part No.942-16)

VALVE SPRINGS, 1.437" SINGLE 1 ST

from

$257.99
Single Outer Valve Springs from COMP Cams allow you to build the perfect spring assembly for your application. The valve spring creation process is far more involved than most people realize. Selecting the right metal stock and creating the best design is not done by chance. COMP Cams has developed a process that creates the highest quality valve spring available. The result is a product that meets and exceeds the expectations of today’s engine builders and racers.

Product Features:
  • Seat pressure: 115 lbs. @ 1.700″, Open Pressure: 284 lbs. @ 1.200″
  • O.D.: 1.437″, I.D.: 1.039″
  • Single valve springs with damper
  • Approximately .510″ max lift at recommended installed height
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Performance Engines Brands You Can Trust For Your Buick GS 350

2 trusted brands of Performance Engines line our shelves, ready to help keep your Buick GS 350 running smooth. Below are some of the most popular brands and their top Performance Engines offerings:

Popular Competition Cams Performance Engines

Competition Cams products for the Buick GS 350 span several categories. Some of the highest-rated Competition Cams Performance Engines that will fit your Buick GS 350 are:
VALVE SEALS, TEFLON 3/8" 1 ST
from $33.99
(1)
VALVE SEALS, TEFLON 3/8" 1 ST
Performance Engine Valve Stem Seal Sets
VALVE SPRINGS, 1.437" SINGLE 1 ST
from $257.99
(1)
VALVE SPRINGS, 1.437" SINGLE 1 ST
Performance Engine Valve Springs

Most Purchased Buick GS 350 Performance Engines from Mr. Gasket

When you buy the most frequently purchased Mr. Gasket brand Performance Engines, you can be confident it will be the right part for your Buick GS 350. Here are the Mr. Gasket Performance Engines Advanced Auto customers buy the most:
High Performance 180 Degree Thermostat for Increased Flow
from $29.99
(20)
High Performance 180 Degree Thermostat for Increased Flow
Performance Engine Coolant Thermostats
High Performance Thermostat - 160 Degree Brass & Copper
from $29.49
(12)
High Performance Thermostat – 160 Degree Brass & Copper
Performance Engine Coolant Thermostats
High Performance Thermostat
from $31.99
This product is not rated
High Performance Thermostat
Performance Engine Coolant Thermostats

FAQs for Buick GS 350 Performance Engines

What are the most purchased Performance Engines for the Buick GS 350?

Out of 22 Performance Engines for the Buick GS 350, the most popular in our inventory are:
High Performance Thermostat
from $31.99
This product is not rated
High Performance Thermostat
Performance Engine Coolant Thermostats
Mutha' Thumpr 227/241 Hydraulic Flat Cam for Buick 350
from $494.99
This product is not rated
Mutha’ Thumpr 227/241 Hydraulic Flat Cam for Buick 350
Performance Engine Camshafts
Engine Valve Spring
from $12.99
This product is not rated
Engine Valve Spring
Performance Engine Valve Springs