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Join Date: Oct 2021
Location: NorCal
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Piston's & Cylinder's for '78 SC

Will the pistons/cylinders with part number 930-103-983-05 (for an 81-83) work in a '78 SC? Pet chart indicates up thru 1980, the part number should be 930-103-962-03 (or -04). Thanks...Steve

Old 08-28-2025, 02:06 PM
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Yes, the later higher compression pistons (9.3 vs 8.5) with the early large ports is a nice combination.

john
Old 08-28-2025, 02:58 PM
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Originally Posted by targa72e View Post
Yes, the later higher compression pistons (9.3 vs 8.5) with the early large ports is a nice combination.

john
Thanks John. Would there be any drivability issues, or problems getting it smogged here in California?
Old 08-28-2025, 04:25 PM
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The biggest thing is, you have to use high test fuel.
Cams are the same but the settings are different
Bruce
Old 08-29-2025, 03:49 AM
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Originally Posted by schiarchianis View Post
Thanks John. Would there be any drivability issues, or problems getting it smogged here in California?
I have a program that will help with smog issues for all 911/930, 75-79.
Send me an email using the link below.

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Old 08-29-2025, 06:37 AM
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