53
5,700 cc
53 cc lt1 heads...92-93 good heads for porting
I have the same heads and from the info I found they 76cc heads with 1.72 intake valves
54cc
58
305 heads work on a 350 engine
Change cylinder heads to a bigger negative cc (ie. -22,-38), or work the high port on your heads to a larger cc (ie. 58cc to a 70cc.)
283 cubic inches, which works out to to 4.6 litres or so.
which part? every type of nut or bolt is different
stock 350 heads are 72 or 74 cc
58.cc low torque swirl chamber head