HELP What Pistons are these for???

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**cdn454LS6** · #1 10-16-2010, 10:47 PM

I have a part #3976027 LEFT
#3976028 RIGHT
Cast #39760 42 RIGHT
The top of the piston say's 2-.030
Boxes are dated nov69 for 454
Are these for LS6 or LS5
If anybody knows I would really appreciate some help.
Thanks very much.
Ken

**Mr70** · #2 10-20-2010, 05:11 AM

1970 LS-5 only.
1971 saw the birth of a new part# as well.

**cdn454LS6** · #3 10-20-2010, 07:56 PM

OK, Thanks for your help Rick
appriciate it very much.
Ken

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