What Is The Best Year 4 3 Chevy Engine

The 4 3l is a good compromise between power and fuel economy especially in smaller truck applications.

Three years later a new larger engine would be introduced the 348 to be followed by the 409. Cams are notorious for going soft in a chevy. Finding the date code on your chevy engine is a matter of looking in the correct areas and being able to read the code itself. He has contributed numerous technical articles on engine rebuilding to automotive rebuilder for more than 12 years.

This will mean dish head pistons large combustion chambers 84cc and crappy gas mileage. The chevrolet 4 3l v6 is colloquially known as the 3 4 350 for good reason. Is there a best or easiest year if one was to swap in the chevy 4 3 i found a 87 which appears to be the first vortec tbi rated at 155 hp 4800 rmp and 230 s torque at 2000 i think in 96 the engine went obdii so lots more sensors wiring etc. Then came the 427 and 454.

All have overhead valves with two valves per cylinder. Immortalized in song the 409 gave way in 65 to the 396. With little exception chevy engine codes are alphanumeric codes with three signs. These years of chevy engines use a low lift short duration cam.

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Today s gasoline won t support a higher compression engine without adding additives octane booster at every fill up. How to identify your 4 3l these 4 3 s are 90 degree even fire engines with a 1 6 5 4 3 2 firing order. The most recent change to the 4 3l vortec came in 2014 called the gen v of the v6 engines and this is now available as the base model for chevrolet silverado and gmc sierra trucks.