3.8 v 4.2 block bore

Randy N Connie

Registered User
Would any one know the deck height of the 3.8 SC block.
And what would be the max bore.

What is the deck height of the 4.2.And what is the max
for its bore for it.

Randy
 
Here is the stock stuff from the thread linked below:
Bore is 3.81"
Stroke is 3.39"
Rod is 5.9135"
Deck height is 9.232"
Compression distance is (top of piston to pin) 1.602"

In '96 Ford made the rods longer, and not just to save piston wieght.
'96 up rods are 6.091"
'96 compression distance is 1.450"

The 4.2 has the same bore but a 3.74" stroke
it uses the same rod at 6.091"
so the compression distance really shrunk to 1.273"

Don't forget when adding up assembly hieghts to only use half the stroke, (that's as far up as it goes).

Vernon



http://sccoa.com/forums/showthread.php?s=&threadid=23811&highlight=deck+height
 
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