What Boost Will I Be At After Cam Install? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Nighthawk89 · 03-08-2016, 11:21 AM

Max boost i was at 10.9 on my last dyno pull. What boost will i be at after my BTR Stage 3 PD cam install?

I ask because i am trying to consider if i should pick up a smaller pulley or not yet. Unsure if i want to run whatever boost my cam gives me until my e85 system goes in?

Jeff_SS · 03-08-2016, 11:31 AM

Save your pulley money and put it towards axles and a proper tire so you can HTFU and not just roll race me, Devin lol

old motorhead · 03-09-2016, 07:54 AM

With an 81mm pulley on my Heartbeat, I see 9.5 to 10psi. My cam, at 224/234 116+2, is smaller than BTR's stage 3. I'd guess your boost would be slightly less than mine with the same size blower pulley. That's assuming you have LT's and a free flowing exhaust.

Nighthawk89 · 03-10-2016, 01:33 AM

Quote:

Originally Posted by old motorhead

With an 81mm pulley on my Heartbeat, I see 9.5 to 10psi. My cam, at 224/234 116+2, is smaller than BTR's stage 3. I'd guess your boost would be slightly less than mine with the same size blower pulley. That's assuming you have LT's and a free flowing exhaust.

I am running the 84mm pulley and I'm running 10.9 max boost without new cam and yes i am running LT's no cat's and the corsa ZL1 3 inch quad tipped exhaust. Should be pretty free flowing. Well see i guess. I may stay at same pulley size or go one size down..

old motorhead · 03-10-2016, 07:14 AM

If would be interesting to see before and after dyno numbers. See how much just a cam swap would be worth. You might consider a meth kit if you're stuck with that 91 octane California skunk piss gasoline. Especially if you pulley down another notch.

Nighthawk89 · 03-10-2016, 11:02 AM

Quote:

Originally Posted by old motorhead

If would be interesting to see before and after dyno numbers. See how much just a cam swap would be worth. You might consider a meth kit if you're stuck with that 91 octane California skunk piss gasoline. Especially if you pulley down another notch.

I think thats what i may do. I considered meth but I am going to flex fuel route to see what kind of gains that provides first.

03-08-2016, 11:21 AM	#1
Nighthawk89 Drives: 2011 Camaro 2Ss M6 Join Date: Dec 2011 Location: Southern California Posts: 4,013	What Boost Will I Be At After Cam Install? Max boost i was at 10.9 on my last dyno pull. What boost will i be at after my BTR Stage 3 PD cam install? I ask because i am trying to consider if i should pick up a smaller pulley or not yet. Unsure if i want to run whatever boost my cam gives me until my e85 system goes in?

03-08-2016, 11:31 AM	#2
Jeff_SS "Cam Only" Drives: 2013 Camaro SS Join Date: Nov 2011 Location: Scottsdale, AZ Posts: 1,773 View My Garage	Save your pulley money and put it towards axles and a proper tire so you can HTFU and not just roll race me, Devin lol __________________ 2013 AGM Camaro 2SS/RS M6 \| LSA Blower, 2.5" pulley, 10% lower, FIC1000's, Fore Innovations Twin Pump fuel system w/ Flex Fuel, CMS Custom Grind Cam, Kooks 1 7/8" headers w/ catless off-road pipes, NPP Exhaust, 3.91's, JLT ZL1 Intake, Prospeed Heat Exchanger, Monster S Series Triple Disc Clutch \| Pfadt Suspension, 1LE Sway Bars \| DSS 1000hp axles \| Mickey Thompson ET Street R 305/45/18 \| Tuned by Ryne @ CMS E85: 734rwhp/674rwtq

03-09-2016, 07:54 AM	#3
old motorhead Drives: Maggie blown LS3 vette Join Date: Aug 2009 Location: SE TX Posts: 1,490	With an 81mm pulley on my Heartbeat, I see 9.5 to 10psi. My cam, at 224/234 116+2, is smaller than BTR's stage 3. I'd guess your boost would be slightly less than mine with the same size blower pulley. That's assuming you have LT's and a free flowing exhaust.

03-10-2016, 07:14 AM	#5
old motorhead Drives: Maggie blown LS3 vette Join Date: Aug 2009 Location: SE TX Posts: 1,490	If would be interesting to see before and after dyno numbers. See how much just a cam swap would be worth. You might consider a meth kit if you're stuck with that 91 octane California skunk piss gasoline. Especially if you pulley down another notch.