1. 6.125" or 155mm
2. 14.5 PSI
3. The 181mm will require nothing, but a good tune is helpful, the 185mm will require a larger heat exchanger and possibly a tune.
4. Because of the stuff you smoke.

 

Purchased one for each SRT. Thanks Jerry for your assistance. Please check and correct the invoice and pm or email me. Thanks for you assistance.

 

JERRY i already have the sl55 complete air intake system w/k&ns installed (which i purchased from let) .If i go with the 181 mm and a tune, what would be a conservative est. of added hp & tqe ? thanks ILLCYA

 

Darn it jerry you need to run this deal again in like another three weeks or so I just finished buying a bunch of stuff. Plus thats when my tax money should come in. You got a layaway plan, pay as you go, IOU?

 

I would say up to 50whp / 50wtrq with a tune, pulley, and the airboxes.

Our cars vary so much on baseline dynos that it's hard to guess. Some guys are pulling 275whp and others are hitting up to 295whp.

I can assure you that your butt dyno will be reading much higher than 50.

.

 

Thanks Jerry for the great sale and LET's continued support for the crossfire community.

 

Thanks Jerry i just ordered the 181 mm pulley kit. Wahooooo can't wait till spring. ILLCYA

 

I am ALL over this deal!!!

 

Ok, before i go ahead and order the spacers and HE from LET......Will I benefit from these if im running a Needswing intake and the 178mm pulley?? I would assume yes, but i just want to make sure that im spending $$$ in the right place. I do plan on getting an ECU tune as well. Thanks!

 

Yes - Our cars (SRT6) require more intake - even if running stock In my experience. With any added boost (177 - 181 - 185) your IAT increase and cooling them off is the most important performance "saving" mod you can do.

I say "saving" because a bigger HE and Pump won't add HP, just give you back what you lost due to heat soak and allow you to keep it. A must for racing and on hot and humid days. You should get the Johnson pump at the same time. You will already have the bumper off.

Call and ask to Erick about moving up to a 185mm pulley. Now that you have the idler and water pump pulley (that you won't need again) the upgrade may be inexpensive and you could sell that little pulley on EBAY and re-coup your $$.

Everyone benefits from with a bigger crank and a better Johnson.

** EDIT **

I want to add that the NW intake will provide all the air your SRT will need and will complement any pulley - - Stock to 185mm.

 

Brice at Alamo did a dyno for me on my Daytona. We talked about the work they do there. I was very impressed with him and his knowledge. I wouldn`t hesitate a second letting him mod my srt6.

If I wasn`t on my way to Franks Racing in Houston this weekend and just spent 1500 bucks on the camshaft and other mods for my Daytona I would be all over this pulley deal. I`ll have to start saving again.

Good luck guys. I`m looking forward to hearing all the good reports.

 

So what is everyone going with, 178, 181, or 185s?

 

With out a tune what pulley should I get? how importnat is the tune since no one around here would have that capability.

 

You don't have to get it dynoed for a tune. Just buy an ecu reflash from LET (evotech), INMotion, Speed Innovations, or any other tuner I'm forgetting. I would think a tuned ecu would be highly recommended to get your dollars worth out the larger pulley.

Hey RPM, I'm getting the 185mm pulley. I figure "if I'm going to go, go all out."

 

I thought you were going for the 250mm Pulley?!? & 400WHP?!? What Up?!?

https://www.crossfireforum.org/forum...t=21599&page=2 #23

LMFAO

 

I wasn't asking about getting it dynoed. waht pulley without the tune should I get?

 

I got "realistic", read further down on that thread. Plus the 250mm aint going to be out for another year from what I hear.

 

I hear the 155mm works without a tune.

 

Go for the 181 - The ECU will adapt well to it and it's less $$ then any F/M pulley. You can tune it up later for max performance. You can't go wrong - these pulleys are better designed then the OEM.

 

Thanks for pointing that out Brian.

The mechanical dampener in the new pulleys will dampen throughout the entire RPM band. It contains about 28 internal pieces, including 8 springs.