Powerband 110 lsa vs 112 - LS1TECH

Go Back   LS1TECH > LS1-LS2-LS3-LS6-LS7 PERFORMANCE > Generation III Internal Engine
Log In 

Generation III Internal Engine
1997-2006 LS1 | LS6
Sponsored by
Texas Speed & Performance

Powerband 110 lsa vs 112

Thread Tools Search this Thread
Old 05-15-2002, 02:23 PM   #1
TECH Regular
Trader Rating: 0
Join Date: Nov 2001
Posts: 409
Default Powerband 110 lsa vs 112

On an identical cam, about how much would the powerband or peak power move with a 110 vs 112 lsa?

[ May 15, 2002, 01:29 PM: Message edited by: Pro Stock John ]
Rpm2800 is offline   Reply With Quote
Old 05-15-2002, 02:29 PM   #2
LS1Tech Co-Founder
Pro Stock John's Avatar
Trader Rating: 34
Join Date: Nov 2001
Location: Chicago, IL
Posts: 41,850
Default Re: Powerband 110 lsa vs 112

I'd say peak HP with the 110 LSA would be at least 200 rpms lower than the 112 LSA camshaft.
2010 Camaro | 10.90@125 1.47 | H/C
2000 Camaro | 10.00@134 1.38 | 348, 150 shot sold
1998 Formula | 9.40@145 1.35 | 348, 88mm sold
1998 Camaro | 12.1@118 | 150, stock internal sold

Pro Stock John is offline   Reply With Quote
Old 05-15-2002, 02:48 PM   #3
LS1 Tech Administrator
Patrick G's Avatar
Trader Rating: 14
Join Date: Nov 2001
Location: Victoria, TX
Posts: 8,233
Default Re: Powerband 110 lsa vs 112

I respectfully disagree with PSJ. I feel that once you start getting toward 110 LSA, you're not going to see a 200 rpm drop in peak power. Maybe 50-100 rpms.

If that logic were true, a 222/222 cam would peak like this:
114 LSA: 6400 rpms
112 LSA: 6200 rpms
110 LSA: 6000 rpms
108 LSA: 5800 rpms
106 LSA: 5600 rpms
I really don't think it's 100 rpms per 1 degree loss of lobe separation angle. Most LSAs on carbureted motor cams fall around 106. A 222/222 106 LSA cam is not going to peak at 5600 rpms in my opinion...probably more like 6000 rpms.

2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Cam Motion blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph at US Half Mile.
2016 Corvette Z51 M7 bone stock awaiting twin turbos.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph Texas Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 Texas Mile
2014 GMC Yukon Denali XL 6.2L Air Raid MIT, tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
Patrick G is offline   Reply With Quote
Old 05-15-2002, 05:06 PM   #4
Trader Rating: 0
Join Date: Nov 2001
Location: Valencia, CA
Posts: 227
Default Re: Powerband 110 lsa vs 112

actually depending on the cam timing events in relation to the motor it may not change the peak points at all. What it will do is change the shape of the curve though. So you may have the same tq and hp peaks, but what happens in between may look entirely different.

Then you get into exhaust setups. Open headers respond better to tighter LSA's. Rod/stroke ratios will effect what LSA works better. It goes on and on.

Sorry, but it is a really in depth subject.
Mike Morgan
Get With The Program!
Custom Calibrations for all LT1/LS1 applications.
Mail-Order and Dyno Tuning available
Mike Morgan is offline   Reply With Quote
Old 05-15-2002, 05:53 PM   #5
TECH Enthusiast
Trader Rating: 1
Join Date: Apr 2002
Location: Dallas-freakin'-Texas
Posts: 716
Default Re: Powerband 110 lsa vs 112

Patrick... I don't know which carb motor cams you've been looking at, but 106 is a pretty damn tight lobe sep. Most of your average SBC weekend warrior type of cams are ground on anything from a 110 lobe sep to 114.

Sure, once you sart getting into the SERIOUS cams (7500+ RPM mechanical rollers) you'll start seeing 106-108 degree lobe seps, but most of the streetable cams are ground wider than that.
'99 Dodge Peon R/T (factory stripes add horsepower, you know)
'02 Lexus IS300 (positive manifold pressure is a wonderful thing)
'04 F150 FX4 (even worse mileage than the Lexus... can you believe it?)
BurnOut is offline   Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
228r 110lsa vs 233/239 mcginnis22 Generation III Internal Engine 7 10-17-2015 11:21 AM
112 vs 114 LSA - Difference? t1blackout Generation III Internal Engine 76 07-23-2014 10:05 PM
Lowering LSA does what....? 1SLwLS1 Generation III Internal Engine 10 04-20-2009 02:53 PM
Futral F13 or Torquer 2? Matt2105 Generation III Internal Engine 27 12-27-2007 02:00 AM
Cam Question...Hr 112+2 nbmls1ta Generation III Internal Engine 3 02-22-2004 03:50 PM

106, 108, 108degree, 110, 112, angle, cams, degree, headers, lob, lobe, lsa, open, sbc, sep, vs

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


All times are GMT -5. The time now is 05:03 PM.