How can you tell... - Team Camaro Tech
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post #1 of 3 (permalink) Old Nov 10th, 05, 11:09 AM Thread Starter
Join Date: Oct 2005
Posts: 9
How can you tell...

This is purely out of curiosity...

Given a picture or even looking at an engine for the first time, what clues would you use to ascertain what type (Cubic inches) of engine it is?

[IMG]C:\Documents and Settings\VSDhaliwal\My Documents\My Pictures\6f_4[/IMG]

Last edited by Markiv; Nov 10th, 05 at 11:47 AM.
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post #2 of 3 (permalink) Old Nov 10th, 05, 11:19 AM
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Join Date: Dec 2003
Location: Leander, TX
Posts: 2,762
Re: How can you tell...

Just by looking at a photo?

You can only deternine if it's a small block (265 to 400 Cubic inches,..or more if it's a aftermarket block that has been stroked).

Or if it's a big block (396-454, or more with stroking...or more if it's a newer GM big they're up to 572 cubes last I heard)

You'll need casting numbers to determine what the engine is,..or at least, what the engine started out as.
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post #3 of 3 (permalink) Old Nov 10th, 05, 04:50 PM
Join Date: Apr 2000
Posts: 21,341
Smile Re: How can you tell...

The first thing I do is scope out the VIN pad for the VIN number/letter code that is right above the pass. side top water pump bolt then later see what my books say what the block started life as?

You just have to look at other things to tell what it is if the block has been decked and the VIN letter code is gone.

It's the letters that decode it!!

Otherwise look at the damper if a SB b/c a 400 has a scalloped one with a bump whereas a 350 on down has a round one unless it is an internally balanced 400 motor running a stock 350 damper or has an aftermarket damper on it?

Same with the 427 on down BB's, but here you have to finger the inside back of the balancer to check for the externally balanced 454's dog-knot vs all the others being internally balanced and smooth back in there!


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