I've got a heads cam LQ4 10.8.1 compression with a D1SC with a 3.85 pulley I'm just looking for a rough guesstimate

 

1,000,000 is my guess. How much cam overlap?

 

10-12lbs

 

cam is 231/239 598/610 115+6 its a custom FI grind i got from tick performance

also truck has 1-7/8 headers 3-inch custom y-pipe i made 4-inch single exhaust
4.10s
4L80E FTI 9.5 3600 converter

 

There is a fair amount of overlap in that cam designed to bleed off boost since you have so much compression.

I really don't know much about the prochargers in relation to pulley size but the question is so hard to answer bc it depends so much on your shift points too.

 

JFYI my cam is on a 112lsa and with a pulley that size I am making 12 lbs.

 

Impossible to answer without knowing rpm.

 

^^^ He was looking for a rough answer, lol. I was assuming he was shifting atleast @ 6k. Should put him close.

 

That sized cam in a 6.0 is gonna want a good 6800rpm. That cam is giving up allot of lowend IMO.

 

Yea it's gonna love rpm. It does have a lot of advance thiugh... So maybe power will come in sooner than we think. But I think anything shy of 6700 will be short shifting it.

The intake valve doesn't close until 44.5'afternbottomndeadncenter, and the exhaust valve opens 60* before bottom dead center... That's a combo for high end power... Especially with the procharger.