The 340 is out....again.....

the clevite cam bearing set for the 340 is sh875s-width- 1=.900", 2=.770", 3=.757", 4=.770", 5=.950", also listed for 318s and 360s up to 1978. for 1979+ they have sh1112s-width- 1=.900", 2 3 4 =..630", 5=.950". so bearing 1 and 5 are the same, and 2 3 4 are about 1/8" narrower, not 1/4". I believe the 1979+ blocks are about 1/8" narrower-lighter weight-for gas mileage. some shops only stock the sh1112s, if they work fine in a 1979+ 318 and 360, the theory is they should be fine in the earlier blocks. I agree, but in my 340 I run the sh875s, why not