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Forum: Pontiac - Street 08-31-2023, 06:19 PM
Replies: 55
Views: 4,970
Posted By Douglas Willinger
90cc "96" SD455 heads

Anyone have photos of these 90 cc prototype SD455 heads?

Am wondering was there ever consideration of reducing the SD455 to an SD400? The 90 cc heads on a 400 would have been perhaps about 8.5 to...
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