The Fast And The Cuda

should fit with no problem it is basicall same as 273 block. I have done early cudas this way. Had 66 w 318 auto 8.75 rear ran low 14's with mild cam and pocket ported heads w good valve job. Current 65 cuda formula s replaced 273 (not the original motor) with 318 but still small rear ran 16.0 first time at track (really ment to just be a cruiser for now). Car runs good and and fun to drive as it suprises many going down hwy....