Author Topic: DIFFERENCE IN A 400 AND 455 PONTIAC ENGINE  (Read 2137 times)

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Offline nanialbe2005

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DIFFERENCE IN A 400 AND 455 PONTIAC ENGINE
« on: August 17, 2006, 07:45:39 PM »
HOW COULD I TEEL IF I HAVE A 400 OR 455 PONTIAC ENGINE IN MY CAR ?

Offline HughJass

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DIFFERENCE IN A 400 AND 455 PONTIAC ENGINE
« Reply #1 on: August 17, 2006, 09:05:59 PM »
How about some details about your car.
give us the engine codes off the block.
Light travels faster than sound. That's why some people appear bright until you hear them speak.



79 W72 WS6,  work in progress - nicknamed Lucy

Offline Zulu

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    • http://groups.msn.com/TransAm1978
DIFFERENCE IN A 400 AND 455 PONTIAC ENGINE
« Reply #2 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
 1978 TA W72 4sdp, WS6, Orig Owner -
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Offline Toolman3903

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Engine & Head Identification
« Reply #3 on: August 30, 2006, 09:28:22 AM »