ws6rufus

iTrader: (6)

Heres a list of what I have.

1999 WS6 Trans Am converible M6(about 4100lbs with my FAT *** sitting in the drivers seat.

MODS
ARE 4.08 Bore 378CI
MTI stageII heads 2.055in/1.60ex(Combustion Chambers soon to opened up for the larger bore)
LS6 manifold
Whisper Lid
ASP pulleys
TTS Long tube headers with Off-Road Pipe
Borla Cat-Back
GMAFS
Moser 9"
RAM clutch
I probably forget something but it has pretty much ALL the bolt ons

Heres copies of the Cam Cards.
One is a Hammer Cam(I already have this one) the other is a IRS Comp Cams custom grind which I can pick up pretty cheap.
I did notice that the IRS cam says "These specs are for cam installed at 108 intake centerline" vs 112 intake centerline for the Hammer Cam.
How do I convert 108 to 112 intake centerline and vice-versa?

HERES A COPY OF THE "IRS" CAM CARD

Gross Valve Lift 0.581/.581
Dur@.006 tappet lift 273/273

Valve Timing@ 0.50
open close
IN 4 BTDC 40 ABDC
Ex 48 BBDC 4 ATDC

These specs are for cam installed at 108 intake centerline.
IN EX
Duration at 0.050 224 224
Lobe Lift 0.3420 0.3420
LOBE SEPERATION 112

HERES A COPY OF THE "HAMMER" CAM CARD for comparison purposes.

Gross Valve Lift 0.566/0.566
Dur@.006 tappet lift 275/275

Valve Timing@ 0.50
open close
IN 1 BTDC 43 ABDC
Ex 43 BBDC 1 ATDC

These specs are for cam installed at 112 intake centerline.
IN EX
Duration at 0.050 222 222
Lobe Lift 0.3330 0.3330
LOBE SEPERATION 112

Thanks for your help.

CHRISPY

Personally I would look at a 228/228 or 230/230 single pattern cam on 112LSA and around 580 lift for that motor. That with a good double spring will work really well and peka around 6300-6400rpms.
Cheers,
Chris

ws6rufus

iTrader: (6)

Im want the car to sound as stock as possible without losing major horsepower doing so.
How do I compare specs at a 108 intake centerline to those at a 112.

Skelton

I have the perfect cam for you. I was going to build a big bore motor but have changed plans. Its a comp custom grind. Here are the specs: .576 lift, 230 duration at .050 ground on a 113 with +2 built in. It should be perfect for your setup. New in the box, 250.00 and its yours.

steve

chris is right on this one i think.
226-230 duration on the cid would sound almost stock. with maybe a 112 or 114 lsa

steve frank

Jimmy98Z

That IRS cam doesnt sound like that bad of a cam for that motor I beleave that motor had this cam before 230/237 59x/59x 112 Cam im not positive though what ever it had before sounded bad *** and made good power.
Jimmy <img src="graemlins/camaro.gif" border="0" alt="[Chevrolet]" />

ws6rufus

iTrader: (6)

this is the last ttt. Just looking for some final input before I assemble the motor.

Nine Ball

iTrader: (38)

I've got the perfect cam for you, and might have it to sell by this weekend.

Since I sold my all-bore 382ci motor to a guy that is putting it in a Corvette, he opted for the milder T1 cam for the stealth factor.

T2 cam - 232/232 .574/.574 112 (+4 deg adv)

email me if you are interested, and I'll check on the status of the cam this week. Oh yeah, it only has 2260 miles on it.

Tony