It is in the mini 2-wheel class, back then it was limited to 366 ci, and hyd. cams,and 2-barrell carb. I have not pulled it about 5 years and the class has really changed since then, so to answer your question it is a 366 small block mopar
It was a 360 opened up to just 366, aluminum rods,pistons with special order rockers for a longer ratio because the rules limited the cam lift so I got a little more lift with the rockers. I filled the block with block fill and only run cooling water thru the heads.
The heads are really opened up and port matched intake with holley 2-barrell.
only thing holding it back is the small carb that only flows so much......
I drag race the 69 olds that is my avatar. We bracket race in the Pro class (no box). It is all steel with the seats and carpet. I run a 68 HO 455 bored .030 over. Nothing fancy but it is consistant and very reliable! Last year I just drove it on the street. Half the year I insured my 68 cutlass convertable and the remainer of the year I drove the 69. I just put it back into storage this week.