Is this blower cam ok?
Thread Starter
TECH Fanatic
iTrader: (27)
Joined: Apr 2007
Posts: 1,277
Likes: 2
From: Collinsville, IL
Is this blower cam ok? INT EXH
advance duration: 291 305
duration at .050: 236 250
lift: 613 613
LSA: 110.5
This cam was spec'ed out by a builder for me. He warned me that it will be very aggressive but it will also make more power. My setup includes a stock bottom end LS1, 317 heads, full bolt ons, P1SC procharger (4.0 blower pulley, 7.25 crank pulley), 3800 stall, 3.50 gears in the rear, fuel pump, 60 lb injectors, etc. Right now I have a mail order tune from Frost. My car definitely isn't running right. It runs strong and doesn't miss but I only estimate it to be around 400 horsepower. My previous setup (heads/cam/stall/full bolts ons) was right about 400 horsepower at the tires and I feel like they both pull about the same. On my wideband I am running a little lean and it does not have a full tune so I do not want to stay on it too long. However, I was expecting the car to be around 550 horsepower at the tires or so and it definitely isn't near this now. Any suggestions?
advance duration: 291 305
duration at .050: 236 250
lift: 613 613
LSA: 110.5
This cam was spec'ed out by a builder for me. He warned me that it will be very aggressive but it will also make more power. My setup includes a stock bottom end LS1, 317 heads, full bolt ons, P1SC procharger (4.0 blower pulley, 7.25 crank pulley), 3800 stall, 3.50 gears in the rear, fuel pump, 60 lb injectors, etc. Right now I have a mail order tune from Frost. My car definitely isn't running right. It runs strong and doesn't miss but I only estimate it to be around 400 horsepower. My previous setup (heads/cam/stall/full bolts ons) was right about 400 horsepower at the tires and I feel like they both pull about the same. On my wideband I am running a little lean and it does not have a full tune so I do not want to stay on it too long. However, I was expecting the car to be around 550 horsepower at the tires or so and it definitely isn't near this now. Any suggestions?
Hmm, that does not sound like a cam meant for a boost engine at all. My blower cam is a 232/240 595/608 on a 115. I'll bet you're losing most of your boost right out the exhaust valves. Do you have a boost gauge installed? Bob
__________________
ATI ProCharger and Moser Sales 260 672-2076
PM's disabled, please e-mail me
E-mail: brutespeed@gmail.comob@brutespeed.com
https://brutespeed.com/ Link to website
ATI ProCharger and Moser Sales 260 672-2076
PM's disabled, please e-mail me
E-mail: brutespeed@gmail.comob@brutespeed.com
https://brutespeed.com/ Link to website
Thread Starter
TECH Fanatic
iTrader: (27)
Joined: Apr 2007
Posts: 1,277
Likes: 2
From: Collinsville, IL
i do have a boost guage but the car is not tuned that well yet. i know i run lean on full throttle runs so i am scared to stay on it. i really haven't looked at the guage when i quickly stepped on the gas...
That cam is WAY off for a efficient blower combo. My cam is close to Bob's cam. Mine is a 235/243 .613/.623 on a 115. It's pretty dam aggressive...you can hear an Idle vid in my build thread. 110lsa is bad for a FI car. I'd use a different cam.
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
With a big blower it could work well. But a P1Sc is just tiny.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo That's true...I should have rephrased it...I generally say it's not the best but bad isn't quite right lol I did say inefficient and should have stuck with it lol. OP I would pick a better suited cam to the combo. A P1 is a pretty small blower and that cam would most likely hurt the combo more then create gains.
Thread Starter
TECH Fanatic
iTrader: (27)
Joined: Apr 2007
Posts: 1,277
Likes: 2
From: Collinsville, IL
I know this thread is a little old, but I am getting 6 psi with a 7.25 crank and a 4.0 blower pulley around 6200-6400 rpm's.
