The possible occurrence of highly deformed configurations is investigated in the N=Z nuclei 40Ca, 44Ti, and 56Ni as formed in the 28Si+12C, 16O+28Si, and 28Si+28Si reactions by using the properties of the emitted light charged particles (LCP). The energy spectra, in-plane and out-of-plane angular correlations of LCP’s are analysed for each of the 3 studied reactions within the framework of the statistical model. Strong deformation effects are deduced from Hauser-Feshbach calculations performed with the Monte Carlo code CACARIZO by using a consistent set of parameters with spin-dependent level densities. The analysis of α particles in coincidence with 32S fragments emitted in 28Si+12C shows a strong contribution from a 8Be cluster emission. The binary nature of this cluster emission has been verified in three other reactions involving a 12C target: 27A1+12C, 31P+12C, and 32S+12C.