Which /6 do I have?
There are casting numbers on the block, look under the intake/exhaust manifold. It will look like this:
(It's right between the first and second freeze plugs, from left to right) This is an earlier block show, but it will still be close to the same location.
Once you find that number, use this chart to identify it:
CASTING # C.I.D.
2202843 170
2205630 170
2264478 170
2463230 170
--- 198
2202857 225
2205528 225
2463430 225
2806830 225
There are casting numbers on the block, look under the intake/exhaust manifold. It will look like this:
(It's right between the first and second freeze plugs, from left to right) This is an earlier block show, but it will still be close to the same location.
Once you find that number, use this chart to identify it:
CASTING # C.I.D.
2202843 170
2205630 170
2264478 170
2463230 170
--- 198
2202857 225
2205528 225
2463430 225
2806830 225