how does a cam effect boost
Thread Starter
Intermediate
Joined: Jan 2011
Posts: 39
Likes: 1
how does a cam effect boost
Say stock bottom LS3 just bolt-ons headers ect.
boost is say 8 lbs and you stick a say around 228-236 600ish lift 114lsa cam in. Yes I know this isn't the best blower cam but just role play for a moment. how would this cam effect boost if nothing else changes. Would boost go up, stay the same or wont effect. I know no one came say for sure but I'm just asking a guest -a -mint of your opinion
This is with a supercharger.
Thanks guys
boost is say 8 lbs and you stick a say around 228-236 600ish lift 114lsa cam in. Yes I know this isn't the best blower cam but just role play for a moment. how would this cam effect boost if nothing else changes. Would boost go up, stay the same or wont effect. I know no one came say for sure but I'm just asking a guest -a -mint of your opinion
This is with a supercharger.Thanks guys
Race Director
Joined: May 2004
Posts: 16,667
Likes: 1,209
From: Raleigh, NC
St. Jude Donor '15
Anything that makes air flow easier will reduce "boost". Boost is just a measure of restriction. You're shoving air through the engine, it backs up, boost is that back pressure basically
Make air flow better, less back pressure, less "boost", same or more airflow.
Make air flow better, less back pressure, less "boost", same or more airflow.
Le Mans Master
Joined: Apr 2013
Posts: 5,376
Likes: 1,118
If you're also asking for a guesstimate of what boost you would make with that cam in an LS3 with headers, which is currently making 8psi of boost with a stock cam, I would guess somewhere around 5-6 psi. But, it will still make more power (since I'm guessing, I would say maybe 50ish?) with that cam than the stock one at that lower boost. Then all you need to do is pulley down from there
