hey guys, my camaro has a 97 vortec motor in it that has been converted to carb. I was told it came out of a Hertz rental truck that was rolled. My main question is does anyone know what compression ratio came in these motors and is it a roller motor? Right now I cant see the engine casting number. It does have the 5.7L stamped in it and the heads are 906 vortecs.

also any recommendations for this motor? I was thinking hot cam.

 

forget the hot cam although it is a very good cam people seem to use the comp grinds more often... and have very good luck. but either way you may need to do some work on them to take that kind of lift... if it hasnt already been done

 

yeah, the heads will have the work done to them. well aware of their drawbacks. thanks for the cam tip

anyone know the compression ratio and if for sure it is a roller motor?

 

well if it is actually from 97 and is a real vortec engine it is a roller engine probably 9.3 or something :1 not anything super might even be lower or higher if someone has done any modifications