SRI or underdrive pullies

[bumsoil]

ive been too broke to do the mods I wanted to do for far too long now. and im really getting the itch for more power.

ben searching for a used SRI for a while now, not finding much though. so im thinking about a set if march under drive pulleys.

I just don't want to buy the UDP and feel like it was a waste of my money. anyone use these and have some insight? will thee car be any quicker? this is my first power mod in a while so I want to make it count for my weak wallet. :coolman:

 

[shurur]

NASVT fixed!!!
NA ~300 RWHP with 96-98 DOHC B-Head 4.6L:
K&N filter
OEM Cams
March damper
March hydraboost and WP pulleys
Long tubes
Hi Flow Cats/Cat Delete mid-pipe
B-Head SRI
90mm LMAF
Tune (canned..more $ for real tuner tune)

350 RWHP:
106100/106060 comp cams properly degreed.
Tune.


March damper is fine below 7k rpm.
I think the UDP and pullies will get you the best bang.

 

[bumsoil]

Placed my order for the march 1175-08 pulleys! next step is a SRI!

 

[shurur]

Placed my order for the march 1175-08 pulleys! next step is a SRI!

Ok but you want the 1158 ud damper.
ebay summit racing or jegs

Also a brand new crank bolt...tighten to spec. .....extremely important!!

http://www.svtperformance.com/forums/showthread.php?621519-underdrive-pulleys-opinion

http://www.svtperformance.com/forum...Who-here-has-the-most-powerful-NA-Cobra/page2

I think that march kit 1175-08 has the 1158 damper, the proper (1172?) wp pulley..
.but I would call to be sure.

You will also want the march 640-08 hydraboost/steering pulley

And an new ford crank tty bolt or arp bolt...warning each of these bolts have different torque specs!!!

 

[bumsoil]

Is the 640-08 pulley really worth $90? Will I really notice a difference with it?
I was going to pick up a new crank bolt at my local ford dealer, but they just burned down this morning :dw: so I may order one now, haha.

 

[shurur]

Is the 640-08 pulley really worth $90? Will I really notice a difference with it?
I was going to pick up a new crank bolt at my local ford dealer, but they just burned down this morning :dw: so I may order one now, haha.

Well those three are the recommended set...per na svt....so I'd say yes.