VMP 2.4" SS Race pulley for 13 Shelby GT500
- Thread starter Ironhand
- Start date
Any worry of belt slip because of how small that pully is??
Justin
Is this a 20-30rwhp over a tuned car or 20-30rwhp with tune. I've seen shops claim up to a 50rwhp on just the tune. What's the scoop? Any Dyno charts. 20-30hp on tune and pulley is not worth messing with for me, but a solid 50rwhp with tune and pulley and you have me sold!
Is this a 20-30rwhp over a tuned car or 20-30rwhp with tune. I've seen shops claim up to a 50rwhp on just the tune. What's the scoop? Any Dyno charts. 20-30hp on tune and pulley is not worth messing with for me, but a solid 50rwhp with tune and pulley and you have me sold!
op:Justin hasn't seen any belt slip with his car.
Typically people are picking up 30hp with just a tune.
at the RPM that this pulley puts the TVS at, it's gotta be near its efficiency limit isn't it?
a lot of ponies for the buck
The TVS efficiency range is peaked at about 18,000 rpm's....anything above 20,000 is definitely past the blower's efficency where heat soak will also become a major factor.
To put this in perspective at 7,000 engine rpm's:
(1) stock 2.7 pulley will turn the blower .......@ 18,726 rpm's
(2) 10% OD lower pulley will turn the blower @ 20,664 rpm's
(3) 2.4 Upper pulley will turn the blower .......@ 21,145 rpm's
(4) 15% OD lower pulley will turn the blower @ 21,697 rpm's
Not only is the small 2.4 upper well past the blower's efficiency range it also has a greater chance of belt slippage in between gear changes which will not be seen on a dyno pull but will be evident on the drag strip.
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It's funny that most blowers max RPM is 18K.
I dont see many people spinning a motor to 7K. What would those blower speeds look like at 6500 & at 6,250?
I could be wrong, but just using some simple math and taking the 2.4 # at the 7000 rpms showing on here the 21,145 ... if we just take that 21,145 and divide it by 7 (per each of the thousand rpm's) we get 3020 roughly. So I am assuming that you could just logically take away the 3020 from the 21,145 number (which would mean your at the 6k rpm number now) and wala! you're right back to 18,000ish at 6,000 rpms. So it wouldn't be much more than the 18k efficiency # with the 2.4 if these #'s are correct
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Honest question:
You don't see 2013 Shelby owners taking their cars to 7k with the over-rev?
Cars are still new so most dont beat the crap out of them.. Yet.
i kind of find that hard to believe
Never will a sports car get a easy life from me, if i wanted to go slow i would corolla it out LOL! :banana:
epper::banana:epper::banana:epper:
Mine sees 7k as soon as the red bar disappears at operating temp.
Well I only know of one 13 owner and this will turn into his 04. End up being 5 years old with 10K miles on it.
Then I will be here to sell them parts. lol
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