The next race was the Monza 1000 Kms, on April 25, where new chassis 008 and 009 where entered for the teams of Rindt/Mitter and Siffert/Hermann respectively. Here too, the little 2.0-liter 910s outlasted the majority of the field, with the Rindt/Mitter 910 finishing 3rd overall behind two Ferrari 330P4s and 1st in class, while the Siffert/Hermann car, let a Ferrari 330 P4 slip between it and its teammates, resulting in them finishing 5th overall and 2nd in class.
The May 1st 1000 Kms at Spa saw another pair of 910s entered, chassis 007 for Siffert/Hermann and, unusually, the Sebring chassis 005 once more, this time for Koch/Mitter. Due to the short interval between Monza and Spa, only one factory Ferrari and no factory GT40s were entered. As a result, the clockwork-like 910s ran at the front with the Siffert/Hermann car finishing 2nd overall and 1st in class, only being bested by the Mirage M1 of Jacky Ickx and Dr. Dick Thompson. The Koch/Mitter 910 finished 7th overall and 2nd in class.
For the 1967 Targa Florio, held on May 14, Porsche waged an all-out war with no less than six 910s entered, three equipped with the 2.2-liter 8-cylinder engine, and three with the 2.0-liter 6-cylinder. Much to the dismay of the local tifosi, the 2.2-liter 910/8 (#024) of Paul Hawkins and Rolf Stommelen won overall, followed in second by the 2-liter 910/6 (#015) of Cella/Biscaldi, with the 910/6 (#014) of Elford/Neerpasch in third. The 910/6 of Siffert and Hermann (#012) would round out Porsche’s dominance of the top 10, in 6th place and 2nd in the sports car category.