Is it worth putting on a 4lb lower with a 2.8 upper on a stock blower???? I have a 2.8 upper already on with a Predator 93 oct pulley tune. Will the stock blower be out of the effeciency zone???
What's the difference in a 4# or 6# lower? The car I'm buying has a 2.93 upper and I was just curious what a good supporting lower would be. Stock eaton. Thanks.
2#'s.
i ran a 2.93/4# on my stock blower and didn't have any problems. However, i did see my power start to drop off around 5500rpm, unlike now it pulls to 6500 with the ported blower(2.76/4#).