1967 unstamped factory 435HP /L89 block
 

A 3904351 427 35HP L89 L88 Block. Sept 66 [I66] dated 4 bolt no slevves and no damage or repairs 100% authentic never stamped otc block,visible broach marks never altered . Purchased from a member here 10 years ago Dated heads,aluminum or cast,carbs etc complete package available 7500.00 block only