Hitman's Pontiac Trans Am Forum

Trans Am Information => Trans Am Information => Topic started by: nanialbe2005 on August 17, 2006, 07:45:39 PM

Title: DIFFERENCE IN A 400 AND 455 PONTIAC ENGINE
Post by: nanialbe2005 on August 17, 2006, 07:45:39 PM

HOW COULD I TEEL IF I HAVE A 400 OR 455 PONTIAC ENGINE IN MY CAR ?

Title: DIFFERENCE IN A 400 AND 455 PONTIAC ENGINE
Post by: HughJass on August 17, 2006, 09:05:59 PM

How about some details about your car.
give us the engine codes off the block.

Title: DIFFERENCE IN A 400 AND 455 PONTIAC ENGINE
Post by: Zulu on August 20, 2006, 11:43:13 PM

You can't tell just by looking. Externally they appear exactly the same. The cubic inch is cast into the driver's side of the block below the exhaust manifold and somewhat toward the front of the engine. See this page, and scroll down to digram #4.

http://groups.msn.com/TransAm1978/engineidentifiers.msnw

Title: Engine & Head Identification
Post by: Toolman3903 on August 30, 2006, 09:28:22 AM

Here's another site from Year One:

http://www.yearone.com/updatedsinglepages/Id_info/pontiacengineid/pontengid1.html