# 2003 Ported Blower Cobra vs 2002 Heads/Cam Z28 **URL:** \ **Category:** Shift518 Automotive\ **Created:** [April 17, 2011, 4:29pm UTC](https://forums.speedlife.net/t/2003-ported-blower-cobra-vs-2002-heads-cam-z28/257940 "2011-04-17T16:29:38Z")\ **Posts on this page:** 1\ **Showing post:** 44
**Author:** ![ScreaminRedZ](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/screaminredz/32/6674_2.png) [@ScreaminRedZ](https://forums.speedlife.net/u/ScreaminRedZ)\ **Post date:** [April 18, 2011, 5:16pm UTC](https://forums.speedlife.net/t/2003-ported-blower-cobra-vs-2002-heads-cam-z28/257940/44 "2011-04-18T17:16:40Z")
> [@20 min until American Gladiators](https://forums.speedlife.net/t/20-min-until-american-gladiators/41363/61): > > yup def BBK’s. no doubt about it…i made 504 with a port and an upper pulley with a filter and x pipe/exhaust, stock manifolds plenum and tb. ported blowers are an awesome bang for the buck mod but the eatons really get too hot to play on the highway unless you are hitting it with spray, but your camaro prob weighed how much less than that cobra?? and how much steam do you “think” your car makes? but if he ran that car even remotely close to the time he raced you, he would be down almost 40 to 50 wheel from heat soak id say. does he run a larger lower pulley? it was a great run either way. and tell him to hit that sucker with a 100 shot ALL DAY LONG! lol Heat soak might have come into play as he got on it for a couple gears a couple minutes before our run. I’m thinking my car weighs around 200 lbs less than the Cobra, but that’s just a guess. The passenger weighs 180, so that’s almost 400 lbs different between the 2 cars. He runs the stock upper pulley and a huge lower. I laughed the first time I saw it because it looks like he mounted a Weld wheel to the front of his crank, but it works really well, and he doesn’t get any belt slip. He does plan on spraying the car at some point. Last year my car made 432/386 with the cutout open, 4.10’s and a spool. Now with the FAST intake, 3.73’s, and posi I’m really not sure what it makes. Some people gain 25 hp from the intake and some don’t gain a thing. Also, the posi should lose me some power, but the gears should gain me some, so who knows. The car does feel strong, but I haven’t driven it in 7 months, so that could be deceiving. I should be hitting the track later this month and hopefully the dyno next month, so I’ll keep you guys updated whatever the numbers. --- _[View the full topic](https://forums.speedlife.net/t/2003-ported-blower-cobra-vs-2002-heads-cam-z28/257940)._