Hey i was thinking about getting a 2.8 pully for my stock eatton....What kind of power gain would i see from this? yeah i know i will need to tune it at the same time.....Im also going to port my blower but thats going to be down the road aways well at least when i get my taxes back i hope.....but just on the pully what do you think i will be able to put down? thanks

 

I would say around 420 to the wheels. Add a port and your at 450. Once you port it a few extra mods your at 500.

 

what else do you have on the car? Intkae? exhaust? most 2.76-2.81 pulley cars with intake exhaust tune make about 440-460 to the wheels.

 

Sounds a little high to me. Maybe with a lower pully too...

 

nope a lower will not do anything but raise tq without a port thats how it wne ton my friends 03. i made 447rwhp 460 rwtq with a 2.76 upper and intake and exhaust.

seans 03 made 457rwhp 475ish tq with a 2.8 intake exhaust.

most recently pam's03 cobra made 478 rwhp 494rwtq with the same 2.76 intake exhaust

440-460 should be right in the ball park based on my expierences.

 

Yeah, pulley, intake, exhaust, and tune put a Terminator at 450 RWHP or so.

 

thank you

 

So what pulley size adds what hp? 2.60" 2.76" 2.80" 2.93"? What is the stock size pulley? I'm looking to add an eaton to my 99 cobra once its forged and want to get the smallest pulley I can with a ported eaton. When will I max the eaton out?

 

smalest i have ever seen is a 2.76, stock is a 3.65. you won't max out an eaton without a port and a larger crank pulley.