Re: [Chevelle-list] 396 vs 402?

[Dale]

For all intents and purposes they are the same block.  In late 1969 the 396
engine received a .030 bore from Chevrolet resulting in 402 cubic inches.
That size stayed with the engine even though it was marketed as a '396' (as
is SS 396) from late 1969 through its demise.  Later blocks may have had
more wall thickness, can't say for sure.  I know the 1969 (early) 396 block
I had in my 67 Chevelle was bored twice, .040 when I rebuilt the engine the
first time and another .020 again 15 years later.  Total overbore was .060
for a total of 408 cubic inches.

Dale McIntosh 
 <http://www.chevellecd.com> ChevelleCD.com 
 <http://www.chevellestuff.com> ChevelleStuff.com 

  _____  

From: [EMAIL PROTECTED]
[EMAIL PROTECTED] On Behalf Of Pelle Andersson
Sent: Saturday, June 21, 2008 8:26 AM
To: Chevelle List
Subject: [Chevelle-list] 396 vs 402?

 

Hi!

 

Is the 402 just a 396 with 0,30 over bore or is it a unique block?

The reason I'm asking is because I wonder wether a 396 can be bored more
than a 402

or if they have the same marigins?

 

B.R. Pelle