65 up manifolds have the same bolt pattern, but you have to watch the exhaust crossover size. Your 389 or 400 engine if it has the 093 heads, (i'd say it was a 389) is if i remember right appox. 8.6 rated compression. You can change cams and keep it mild enough to drive, get fuel anywhere without issues, and still enjoy it. Something like the Comp cams XE268H or their hyd. roller XR264HR or XR276HR (my choice)would work well.
|