  The evolution equation of cosmic density perturbation of a spin dominated
universe in Einstein-Cartan gravity is obtained.Examples of inflationary
cosmologies with spin are also given where we compute the density perturbations
in terms of redshift and show that spin-torsion effects produce a growth on the
inhomogeneity of the universe as the redshift is high.Spin-torsion effects are
redshifted out when the Universe expands and would be rarely of importance in
present day phase of the universe.Comparison with the primordial density
fluctuation of COBE data is also obtained.From our computations a COBE type
experiment could be proposed to measure the spin-torsion effects in large scale
structure objects such as spiral Galaxies and globular clusters.
