03sierraslt

iTrader: (22)

I dont plan on running that much boost, just trying to figure a couple things out.
Only plan to go another 1-2lb, for now anyway. Well actually next spring, trucks pretty much away for year now. Time to tear some stuff apart and start working on my Phenolic spacer.

TIM Z

iTrader: (12)

**** bro that powerbond OD pulley is looking mighty fine man!



And another plus is more belt wrap

03sierraslt

iTrader: (22)

Thats what I am considering, for now its not a issue. Got another 4 months before thats a concern.

Lucille

My 3.4 pulley calculates out to 10.16psi. I actually see about 9 psi in the real world. Could be cam timing or the LT headers, or it could be a restriction on the intake side.

03sierraslt

iTrader: (22)

When I calculate mine it says my boost should be about a 1lb more then what I make too.

Lucille

Funny thing is - when I stroked mine from 364 out to a 402 I also installed the OD crank pulley and ended up with the same level of boost as before.

Mangled03gmc

iTrader: (95)

^^^ Thats not funny that is because you have made more area that that the boost has to fill^^^^


I do think that the OD pulley will make the boost comes in sooner..

Lucille

Funny in that the OD pulley offset the increased displacement almost exactly. Without any planning on my part.

Mangled03gmc

iTrader: (95)

I bet that truck is a beast with a 6.6 and 2300 in it..

Jamesbond2509

iTrader: (1)

I checked out the PB OD pulley - It is 7.5 in - what is the size of the stock crank pulley - thought it was 7.5?