[Z06] Downsizing cam in Ls2 questions
Thread Starter
Drifting
Joined: Feb 2012
Posts: 1,316
Likes: 1
From: Dallas Ga
Downsizing cam in Ls2 questions
Hey guys I'm considering changing cams in my Ls2 C5Z. Currently my setup is fast 92, Ls2 tb, tfs 220's, 1 7/8 kooks, and 239/244 111 lsa cam and put down 489/442. Im wanting better driveability and I'm sick of the surging with the setup that I have. I'm considering a Btr stage 2 Ls2 cam. Roughly how much power will I be leaving going this route and will it be noticeable on the street? Thanks
Melting Slicks
Joined: Jun 2005
Posts: 2,396
Likes: 52
From: Sicamous BC
That is a nasty cam, under 2000 rpm it probably wants to pitch you out the window 
I've a stroker that had a similar overlap camshaft, I could not tolerate it.
I've been able to reduce the overlap 17.5 down to 10.5 & currently 5* with no loss to the top end power. Careful selection of the valve train components has resulted in nice gains under the curve & still hit good numbers in the top end.
I touched 500rw & 435ftlbs with my LS1 with a much smaller cam than you are running currently & near perfect street manners.
Have you talked with Brian regarding his camshaft & your cylinder heads? Martin @ Tick is another resource of information that may help you select something more suitable while making good top end power.
You do not need silly big camshafts to make good power.
I've a stroker that had a similar overlap camshaft, I could not tolerate it.I've been able to reduce the overlap 17.5 down to 10.5 & currently 5* with no loss to the top end power. Careful selection of the valve train components has resulted in nice gains under the curve & still hit good numbers in the top end.
I touched 500rw & 435ftlbs with my LS1 with a much smaller cam than you are running currently & near perfect street manners.
Have you talked with Brian regarding his camshaft & your cylinder heads? Martin @ Tick is another resource of information that may help you select something more suitable while making good top end power.
You do not need silly big camshafts to make good power.
Thread Starter
Drifting
Joined: Feb 2012
Posts: 1,316
Likes: 1
From: Dallas Ga
I was told at best I would see 30cfm on the heads and that I would probably be disappointed for the money invested. That's exactly what I picked up with my Ls7 when I had my stock heads worked. Minimal difference seat of the pants. Not worth the coin imo
Thread Starter
Drifting
Joined: Feb 2012
Posts: 1,316
Likes: 1
From: Dallas Ga
I drove the car today after it sitting for 2 weeks. There literally is hardly ever a moment where you cruise perfectly smooth without a hiccup from the cam. I guess I'm getting older and priorities are changing lol
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer