View Full Version : is it safe to have a 3.7 pulley on a cammed a3?

11-09-2013, 02:18 PM
Im getting it tuned next month, so I thought i might get it tuned with a 3.7 instead of a 4".. but will the engine last in the long run, or its not recommended?

11-10-2013, 11:20 PM
Most would recommend additional cooling. Look into meth kits. Fairly cheap + extra power.