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spincobra03
03-26-2006, 07:37 PM
I couldnt get ahold of my tuner so ill throw it out there. I have an sct tune with a 6lb lower and alternator pulley, now I was wondering can I change my idlers and upper (if I can do so what do u suggest a 2.75, or 2.80). I know it will have to be retuned but will I need to have those cooling mods, such as the resivoir tank. Since I have a red cobra I was thinking of going to some red motoblue pulleys. Im sure ill need a bigger belt but is there any danger to having all those pulleys done????

Big T
03-26-2006, 08:42 PM
I've seen some 2 or 4# lowers with a 2.75 but I haven't seen a 6# lower with that upper. That's not to say that it hasn't been done. That would be alot of boost. mabye a 2.93 pulley with the 6# lower? I have a 2.76 billetflow and am about to put on a 2# lower next weekend. I am going to get a new heat exchanger over the summer. You will be producing alot of heat with the upper/lower combo and will need some cooling mods. Hope this helps.

03slidewayzSVT
03-26-2006, 10:03 PM
spincobra, Do you have a ported blower???? If not a 2.76,2.8 will do nothing but create more heat.... I have a 4lb lower that I just installed with a 2.8 upper and I lost HP and only picked up 12 TQ with 4lb extra boost:eek: it all the heat the blower makes.... I also have a Steigy Stage 4 ported blower on the way thats why I already changed my lower... I also have a 2.5 gal. intercooler tank going in....Oh billetflow 4 piece idler's is the way to go:thumbsup: here are some pic's of my 4 piece billetflow ider's Red.........:thumbsup:

Big T
03-26-2006, 10:20 PM
spincobra, Do you have a ported blower???? If not a 2.76,2.8 will do nothing but create more heat.... I have a 4lb lower that I just installed with a 2.8 upper and I lost HP and only picked up 12 TQ with 4lb extra boost:eek: it all the heat the blower makes.... I also have a Steigy Stage 4 ported blower on the way thats why I already changed my lower... I also have a 2.5 gal. intercooler tank going in....Oh billetflow 4 piece idler's is the way to go:thumbsup: here are some pic's of my 4 piece billetflow ider's Red.........:thumbsup:
Is the 485hp 515tq with the 4# lower and the 2.8 upper? What was your numbers before if these are your current numbers. I'm planning on getting a port later this summer. I have the 2.76 and a 2# lower about to be installed with the intercooler to follow. Do you think your power would have been better if you had the intercooler tank in or mabye a heat exchanger installed?

kilroy
03-26-2006, 10:29 PM
I couldnt get ahold of my tuner so ill throw it out there. I have an sct tune with a 6lb lower and alternator pulley, now I was wondering can I change my idlers and upper (if I can do so what do u suggest a 2.75, or 2.80). I know it will have to be retuned but will I need to have those cooling mods, such as the resivoir tank. Since I have a red cobra I was thinking of going to some red motoblue pulleys. Im sure ill need a bigger belt but is there any danger to having all those pulleys done????idlers, no danger. But I'd do Metco (again & again) because they're hardened outers won't scratch or fade. BF will, especially on a daily driver.

upper pulley? Reichard Racing & let your tuner do his thing immediately after you install it or just let them put it on for you ;)

03slidewayzSVT
03-26-2006, 10:34 PM
Big T, Those mods ade before 4 lb lower car now 475 RWHP and 515 RWTQ...I think a HE, and intercooler will work it will just take a little longer to heat soak!!!!