ET Performance Heads on a C5
12-04-2005, 08:55 AM
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ET Performance Heads on a C5 Hey guys. This is my first post in LS1TECH. I am a member of the Corvette Forum. I have a 99 A4 C5. Current mods are Vigilante 3600 TC, Kooks headers, hiflow cats, Z06 exhaust, LS6 intake, Vararam and a 224/228 595/601 114LSA cam. I am also running 3.15 gears. My best time in very good air is a 11.70 @ 114.3 mph with a 1.60 60 foot on drag radials. This 60 foot only happened once. I am generally between 1.65-1.70. In average air I run 11.90's-12.0's and in crappy air 12.2's. My car also dynoed at 366 rwhp. I am thinking of having a set of 215 cc ETP heads installed and retaining the current cam. How much rwhp do you think I will gain and how much ET will I gain? I don't want to install a roll bar and I am worried that I may be going too fast. It is ok if I occasionally dip below 11.50 in very good air, but for the most part I want to run slower than 11.50. What do you guys think? Any other head suggestions. BTW the Vette Doctors will be doing the install so the car will have a good tune. Thanks!
