View Full Version : What size is our pulley?
Jeepngli
05-05-2009, 05:02 PM
I've been told different stories by different people and companies. Does anyone know for sure(ie- they've taken the pulley off and measured) what size our Racecrafts come with? Its tough to measure with the pulley on the engine and I've only been able to get vague measurements. What have you guys found? Thanks!
I would think it would be the same size and an S281 S/C. Where is the conflicting data coming from?
If all fails contact MJ/Saleen and post your findings. :smile:
mosaleen
10-15-2009, 09:05 AM
The Racecraft came with the blue inj. and had the 465 or some say 475 bhp system. The S/C pulley size is 3.87
The 435 bhp S/C pulley size is 4.00
If you all change the S/C pulley to 3.60 and my mosaleen S/C idler system and JDM or Performanc Auto Sports tune you will kick those WS - 6's (*&(&(&&(&(*&)... :biggrin:
Jeepngli
10-15-2009, 09:38 AM
Thanks. I did end of finding out that the Racecrafts come with the 3.87" pulley. The only thing different b/c the 420HP and 475HP models is that the airbox is cutout and has a more aggressive tune.
I am awaiting my retune from JDM with their intake and calibrated MAF. This should put me close to 400WHP. I dynoed at 373WHP/377WTQ SAE. I have an offroad xpipe which should put me close to 400WHP with the tuning. I may do a 3.6" pulley in the spring. I'm between a 3.4" and 3.6". Depends if I wanna do the fuel pumps.