04-30-2026, 11:00 PM
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CC Member
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Join Date: Jul 2003
Cobra Make, Engine: Unique Motorcars 289 USRRC, 1964 289 stroked to 331, toploader
Posts: 1,142
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Not Ranked
Ok,...
...but you don't have to race it to build the real deal! Those high LSA's are for EFI cars that have knock sensors that will have a fit with a lower LSA and a bit of rumble. You will give up some low-end with those numbers and no overlap. I'm thinking more like a 108 LSA for mine. 
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Paul
Unique Motorcars 289 USRRC
1964 289 5-bolt block
Toploader and 3.31 rear
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