Frequently Asked Questions About Peterbilt 352 Engine & Performance Parts

What engine options are compatible with the Peterbilt 352, and which performance parts work with each?

The Peterbilt 352 typically came with Caterpillar 3406, Cummins Big Cam series, and Detroit Diesel engines. For Cat 3406 engines, turbo upgrades and exhaust manifolds are direct bolt-on applications. Cummins Big Cam engines work best with our aftermarket air intake systems and performance injectors. Detroit Diesel variants require specific exhaust components due to different mounting configurations. Always verify your engine serial number before ordering to ensure proper fitment.

How difficult is it to install performance exhaust systems on a Peterbilt 352, and what tools are required?

Installing a performance exhaust system typically takes 4-6 hours for experienced mechanics. You'll need a full socket set (including 15mm-19mm), pipe hangers, exhaust clamps, and potentially a sawzall for removing old components. The main challenges include aligning the new pipes with existing frame rails and ensuring proper clearance around the transmission. Many customers report needing to modify or relocate heat shields. Professional installation is recommended if you're not comfortable working with heavy exhaust components.

Will aftermarket air filters and intake systems actually improve fuel economy on my Peterbilt 352?

High-flow air filters and cold air intake systems can improve fuel economy by 3-5% under optimal conditions, but results vary based on driving habits and maintenance. The most noticeable improvements come when replacing severely restricted factory components. Performance gains are more pronounced during highway driving at consistent speeds. Keep in mind that aggressive driving or heavy loads will minimize any fuel economy benefits. Regular cleaning of aftermarket filters is essential to maintain these gains.

What year range differences should I be aware of when ordering engine parts for my Peterbilt 352?

Peterbilt 352s manufactured from 1969-1973 use different mounting brackets and wiring harnesses than 1974-1980 models. Early models (pre-1974) have mechanical fuel pumps and different turbo mounting configurations. The 1974 transition year saw updates to emissions equipment that affect exhaust routing. Models from 1978-1980 may have different coolant hose routing and electrical connections. Always provide your VIN when ordering to ensure you receive the correct generation of parts.

Are chrome performance parts worth the extra cost compared to standard finishes?

Chrome parts typically cost 40-60% more than painted or powder-coated alternatives. The durability depends heavily on your operating environment - chrome performs well in dry climates but requires frequent maintenance in areas with road salt or high humidity. Many operators find that polished stainless steel offers better long-term value, as it resists corrosion without the maintenance requirements of chrome. For show trucks, chrome remains popular, but for working trucks, powder-coated or stainless options often provide better cost-per-mile value.