i thought they raised the rpm rules in SBI atleast..so i think its still considered legal..BUT NOT SHURE !
i didnt even know u can have 510 CI per SBI rulebook ???!!!!
6.8.2. Engine maintenance and rebuilds – The respective motors can be maintained and rebuilt, utilizing stock OEM parts and specifications, with a maximum cubic inch limitation of 510 cu in and a maximum compression ratio of 9.0:1, all other engine specifications and tolerances must be as per the Original Engine Manufacturer or have approval from SBIP in writing. Note: After market 502 cubic inch GM blocks may be used.
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09-04-2011 01:35 AMLast edited by 600sci; 09-04-2011 at 01:41 AM.