I'm thinking of using a metco 2lb lower blower pully and moded factory air box.

Will I see a noticable power difference? About how much more hp and tq?

Btw. no chip only 91 octane around here

Thanks

 

I think it helped but as most do i went to the 4lb lower about a half a year after the 2lb lower. Now i have a 2lb that has been sitting in a box for a year and a half not being used. Id say go for it.

 

Wel that depends what else you do?

JDM just ran 12.00 only using a 2# pulley

 

I have a 2lb'er, JDM flipchip, and K&N w/ airbox mod.

I ran a best of 13.2@105, spinning 1/2 way through 1st, with a ****ty 60' of 2.1

With a good driver, a 2lb'er, chip, and intake should net you 13 flat on an average day, and on a really cold day (40's) should net you a 12.9xx.

The pulley makes your torque curve even more flat, and the midrange punch is accentuated.

In 4th gear @ 60, you can roll into throttle and accelerate without it downshifting in the search for power.

Basically, the 2lber adds more power under the curve, and aids driveability. Get a properly tuned chip and watch how much your truck wakes up!

Personally, I would go with the 4lber because boost is addicting. I went with the 2lb because I was afraid of putting a hole in my block. However, with a proper tune, you shouldn't have anything to worry about.

Besides, a 4lb, chip, and intake will net you consistent mid/high 12's.

Good luck and happy modding!

 

2#??
Get a 4# and a very conservative tune. It's safe and proven to be. Look at all those on this board daily driving them. The tune is the key. A 2# will make a difference but nothing like a 4# will make and the cost is the same.

just my 02
-0light1

 

its all in the tune.

JDM just went 12.0 on a 2# pulley

 

http://www.msu.edu/~nawrock3/BlowerRPM.xls


this will caluculate your power given any pulley size

 

Get the #4 my times are below............ you will love it

PEacE......................
Jim

 

check my sig.

 

With just my 2# upper\diablo (conservative tune) and holes in the stock air box I got 377\466 rwhp\tq.

I haven't dynoed since the 4# went on but I am running low 8's in the 1\8th. Best of: 8.12 @86mph


slo-poke