sdubfid

iTrader: (1)

I’m looking what benefits there will be switching to a more modern cam profile.

currently I have tsp 233/239 111LSA .600 .600

engine setup:
Stock ls1 bottom end limited at 7000rpm
AI 226 Cnc heads
victor jr intake
holley 4bbl throttle body
deka 60lb injectors
ws6 store rockers
Holley terminator x
t56 magnum transmission
Long tubes

car is a 1969 camaro idles at 770rpm

future mod will be a dual plane intake manifold that I will weld injector bungs on to to give a little more midrange. All the dynos I have seen show no losses below 7000rpm on 346cid applications. Also going to 4.1 from 3.73.


summit offers a stage 3 with similar specs
231/242 113+3, .600/.600 Lift.

are there any mid range benefits to switching to a more modern profile? I’m fairly happy with the 233/239 but want to hear any suggestions.

99Ls1fever

iTrader: (3)

Seems like you have some really nice cylinder heads on there, with a great intake. Why not just call around and start asking what companies opinions are and have them each spec you out a camshaft for your setup.
Texas Speed and Performance 512-863-0900
Martin Smallwood Smallwood Race Development 864-723-2892
Brian Tooley Racing (888) 959-8865
Cam Motion 1-225-926-6110
Hope that helps you out a little I am sure some of these guys can point you in the right direction, I have been on the phone with each of them here th past few weeks trying to put together a new build and get their ideas on combos and camshaft designs. Best of luck.

Tuskyz28

I personally wouldn't change it. Some of the older cam designs/specs out perform the new stuff....

02*C5

iTrader: (1)

What is it that you're looking for? Are you looking for a milder cam one that will being your RPM range down more low end torque. More a stretch light to street light cam.or are you still looking to rev out to 7K rpm? Is your car a weekend warrior or is it track attack car? That depends on the next step for your new cam. If you're looking for just something street light to street light go with a smaller lobe high lift with a 109-112 lsa that will get your power started at 1800 to 6500 rpm.

Jimbo1367

That intake will limit upper RPMs I used to be for them, but have seen some negative data on them.

02*C5

iTrader: (1)

Sloppy mechanic stage 2 cam has a really nice chop, you can Google them. The specs are 228/230, 585"/.585" 112 LSA. Check it out and I'm sure this will work for what you want.

sdubfid

iTrader: (1)

Are you referring to the dual plane limiting upper rpm’s? All of the dynos I have found have shown that to be false under 7000rpm on smaller displacements and upwards of 30-50ft lbs through the midrange.

sounds like I will just stick the with 233/239 as it has a proven good history.

stockA4

I'm running the comp low shock drift cam It's a 233-243-114 LSA and its advertised to work with stock or LS6 springs if you look at the description on the website they only recommend changing the timing chain if your engine has a lot of miles, It's safe way past 7500 RPM (That's where I set my limiter) because the lobes were designed on a spin-tron I have one in my junkyard LQ9 and I've been bouncing it off the 7,500 RPM limiter since I put it in there. I used summit racing LS6 springs and BTR hardened pushrods a bit longer than stock to strengthen the valve train Even further. I imagine if I change the oil every once in awhile it should last about a million miles. It is so smooth there is absolutely no valvetrain noise and no float at all whatsoever I'm really happy with it. I have another thread about it already with idle videos etc