Originally Posted by nobody_1250
well the intake has 12 bolt holes but the the heads it came off of had valve covers with 2 center hole mount, was i wrong to assume they were vortac heads (i couldnt get the numbers on those heads)
Those would not be Vortec, just common centerbolt valvecover heads. True Vortec heads have a 8 bolt intake pattern. If your intake has a 12-bolt pattern it will fit the 3932441 heads you have.