No casting info????

slantsixdan said

No, 1980 was the last year for solid lifters and 1981 the first year for hydraulic lifters (except for an unusually large production test run of hydro-lifter Slant-6s during the 1978 model year).



Not quite. The 170 is the LG (low G) block. The 198 and 225 both use the RG (raised G) block, so the 198 and 225 have the same longer bypass hose; only the 170 has the shorter one.

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Thanks for correcting my post, Dan.
The 1980 thing was mixed up, I meant to say that the last year for solid cams was 1980 and in 1981 they went with hydraulic cams.
And as for the 198 thing, I thought I was right because a few years back, I looked at a '72 Scamp that was for sale locally, and it was coded for a 198 and it had a rebuilt engine in it and had the short hose.
Come to think of it, the guy was kind of a sheister and I'll bet he put a 170 in it and kept the original 198.
(I didn't end up buying the car BTW)