Stroker87

car is an 03 c5z with the following already done

kooks LT & katless X
vararam ram air / power duct
BB exhaust
dyno tuned
3.73 gear
monster stage 2 clutch
RPM level 5 trans

previous owner is the one who had it tuned 385rwhp/364rwtq

I have a set of of 243's that have a mild port job, fast92 & throttle body

I'm looking for a cam that will be good for a daily & pass emissions but make decent power i'd like to be in the 430 - 450rwhp range, another thing is really not wanting a hunting idle or a car that idles 1000+ rpms

I was told a cam under 230 @ 50 and less then 600 lift on a 114 lsa?

so whats my options? please include cam part #'s (if you can)

thanks

Edit: looking at this cam

Texas Speed 228R 228/228 .588"/.588" 114 lsa

would this be a good choice?

Bluefire

My data points:

I stared with a stock '03 LS1 (with an LS6 intake). Added stock 243 heads, Cam is 224/230 .581/.588 LSA 113.
Mustang Dyno showed 420 rwhp/392 rwtq.

FYI, Those numbers were when my car was an A4. I would imagine that they would be ~5 hp and ~5 tq higher through an MN12.

Hope that helps.

zeevette

How you gonna pass emissions with no cats?

Stroker87

how was your car for daily use? ever track it?




they dont put any thing in the exhaust just plug in under the dash so with the right tune its not a problem, I have kat's on the car but there for show

Bluefire

It is my only car. Daily use is fine. Very street friendly (you can drive it like a Grandpa if you choose). Idle has a nice little rumble (lope)

I track (HPDE) my car ~10 times a year. IMHO this motor is a beast. I have no need/desire to make it faster. People have told me at the track is sounds like a NASCAR.

neutron82

if that's the case then it doesn't matter what cam you get, once it's tuned it will pass no problems

aaronc7

03 Z ported 243 heads, kooks headers / x-pipe with stock ti and an EPS 226/230 113 +3 cam. Idles fine at stock 800 rpm and low end is very good. If you're very in-tune with your car now, it's not totally 'stock like" driveability down low, but it's very good. Made 435 whp / 405 tq SAE and holds power to 7k. Made 390/375 before porting the heads and cam. A cam like this plus your FAST 92 should be 450whp easy. Here's a comparo dyno I put into excel:

Stroker87

nice gain! what is the lift of your cam? i'm trying to avoid bucking while in parking lots and low speeds it really dont bother me if it mild just dont want to wind up my wife hates it and never wants to get in the car again

aaronc7

.604" on both the intake and exhaust... I am running PSI 1511 beehive springs. Once in a blue moon it will surge slightly but I would not hesitate to drive this car to/from work for a week in traffic etc.

zeevette

Be aware that increasing overlap will make your exhaust stinky. That's my wife's only objection to my mods. I even added cats, and a blower cam, but it still stinks.

Stroker87

yeah i'm not wanting it to stink, my 87 silverado stinks and thats part of why it just sits

Stroker87

edit: never mind

found a cam but it sold

Sigforty

You can tune some of the stink out with injector timing. GM has it setup so the injector sprays on a closed intake valve. If you move the timing to after the exhaust valve closes and intake is open it eliminates the fuel charge going out the exhaust.

Stroker87

@50 222in / 218ex 601in / 598 ex 116 LSA

would this cam be a good choice?

itsonlyairandfuel

This has been talked about alot,http://ls1tech.com/forums/dynamomete...k-results.html high on my list when it is time to upgrade. Ron B.

Stroker87

it was spec'd for a rear mount turbo setup but the numbers seam to be inline with what i was told to look for so really dont know if this would be ok?

93Polo

I would go with a single split or standard split (more intake than exhaust duration).

224 intake and 224-230 on the exhaust side makes a great daily cam. Honestly I would not bother going with a cam smaller than a 224, on NA build where it does not have to pass a sniffer test. A 224/224 114LSA can be very docile.

Stroker87

with the cam mentioned above would i be leaving a lot over Hp out? can that cam make decent power?

93Polo

I believe you would be leaving HP on the table, given all of the other trade offs that come with selecting a cam. How much I don't know. The specs look like a turbo cam. If it were my time and money, I would hold out for another cam if I were looking for a mild cam only NA build.

Reverse (more intake than exhaust duration) split cams were used on NA builds when the LS1 and LS6 intakes were the restriction point but with your FAST92 that is not a restriction point. In a simplified ideal world you would be fine with a single pattern cam and the exhaust track would flow 75%of the intake for a NA build.

93Polo

One other thing, if you get a cam and it does buck, I would buy your own HP tuners, get the Pro so you can do wideband tuning if needed, and the tuning school books. Most shops tune for Wide Open Throttle but spend little time doing drive ability. You can spend some time in the VE table logging and tightening the up the 02s which will make the car much smoother. A friend and I spent last Saturday doing that on my car.