99 Black Bird T/A

iTrader: (4)

Looking for cam & header advice on an LS2/4L60e that will be swapped into my convertible 91 RS. Camaro. This will be my second Third Gen with an LS swap. The other camaro turned out nearly perfect with its 383 LS1 swap.

The budget allows for headers, 3 inch y pipe, cut out, SLP 2OTL catback, porting the LS2 intake or swapping to a ported TBSS intake, under drive pulley, new cam, springs, push rods, stall converter, dyno tune but not a set of ported heads at this time. Eventually, the car will get a set of TEA stage 2 or AI stage 2 ported cylinder heads. Car weight is about 3300 pounds. Rear is a 10 bolt with 3.42 gears.

The convertible will be used as a weekend car and cruiser. My girlfriend drives it fairly often so good street manners are required. She can drive my 99 TA M6 with a heads and 224/224 cam with ease so there is some leeway in picking the cam for the ls2. It needs to be very driveable but not absolutely stock like.

Should the headers be 1 5/8 or. 1 3/4 or 1 7/8 with 2.5 or 3 inch collector?

Stock LS2 intake, ported LS2 intake, TBSS intake or ported TBSS intake.
No funds for a FAST 90/92 set up.

Cam?
LPE GT2-3 207/220 .580ish lift on 117ish lsa
220/224 on 114 lsa

Tick SNS stage 1
Standard Lobes: 227/231 | .618"/.595" | LSA111+2
Milder Lobes: 226/231 | .60x"/.59x" | LSA111+2

Cam Motion LS 2 Stage
Duration at .050 - 222/228
Lift with 1.7 - .578/561
114 LSA

Other cams to consider?

I'm very open to suggestions and comments. Thank you.

140K_GXP

I have a 2006 GTO with the CamMotion LS2 stage 2 cam, 1 7/8's Kooks, ported intake and TB with a 4L65E with stock stall. Street manners are excellent, same as stock. Car has nice noticeable lope but nothing crazy. Below is the dyno sheet both before the Kooks and after. I intend to get AI to port the heads in the future.

CAMMOTION PERF

The Cam Motion LS2 Stage 2 camshaft is a great performance camshaft for your application. It will work great with stall converters from 2600-3500 and it will have power everywhere. That design is one of my favorite all around street grinds because they are so enjoyable to drive.

You can use it with our PAC 1218 beehive performance replacement springs. I also recommend using our hardened chromoly pushrods.

NAVYBLUE210

Cam Motion LS2 Stage 2 Check.
1 7/8" LTs, 3" Collector Check.
Ported TBSS (if it fits) Check.

99 Black Bird T/A

iTrader: (4)

Sounds good a few more questions.

With the Cam Motion LS2 Stage 2 what is reasonable valve spring life with very moderate high rpm use? 25,000 miles? My 99 TA with a 224 XER cam usually gets 45,000 miles out of a set of valve springs. The XER lobe cam has been excellent for 130,000 miles but the valve train always sounds like a sewing machine. Can I expect similar durability with a Cam Motion cam package?

We shoehorned a 102 Fast LSXRT into a 3rd gen camaro. I suspect we can get the TBSS to fit. Are their any tuning issues with the TBSS? Specifically deliverability issues? The Fast LSXRT was a total nightmare with driveability tuning and had to be replaced.

140K_GXP

I think the valve spring life will be fine. Lift is quit moderate at .578/.561 intake/exhaust and Cam Motion is know for there valve train friendly lobes. I have no doubt that you can go 25,000 miles with no problems. Just make sure to you a quality spring. I went with PAC 1218 springs which are good to .600 inch lift.

I don't think there are any tuning issues if you go the the TBSS intake but I think it is taller so not sure if it will fit. I am a bit biased but a good option is to just have the stock LS2 intake ported along with the throttle body.

99 Black Bird T/A

iTrader: (4)

140K_GXP, thank you for the information. I really appreciate The dyno graph with before and after with the headers. ThTs made The case for The 1 7/8s. The Cam Motion set up sounds good with the long spring life.

While reseaching, I discovered a Flow Tech cam that looks promising. Anyone have experience with it in an LS2?

FTI
LSx "StreetSweeper-HT" Hydraulic Roller Camshaft
Specs: 228*-232*-111*-.612"-.600"