[Mr70]

For the Chevelle SS in 1970,during the first 4 months of production,the L-78 Chevelle when optioned w/L-89 Aluminum heads used #842 closed chamber heads with 11:1 pistons,(as was carried over from 1968-69 L-78/L-89's),and used with the #569 intake Manifold...but the M-22 rock crusher was not a possibility with the 1970 L-78 or L-89 Chevelle,do to retooling/production constraints for the new 454 engine release.

The #074 Open Chamber heads were used on the larger piston 1969 ZL-1 Camaro-Corvette,1969 L88 Corvette & 1971 LS-6 Corvette.

Why has the seller ended this auction early?