bigfatls6

iTrader: (34)

I just bought a set of unmilled prc stage 2.5 5.3 heads. I am pretty sure the valves have not been recessed either. I want it to have a pretty choppy idle so i guess I need to stay with a 111 lsa. I don't use the car for a daily driver but I still want it to be able to be driven daily if needed or wanted to. I was thinking really serious about the torquer v.3 with the 111 lsa becasue I have used this cam before but am worried about it being to harsh on valve train parts. I also want to make sure there are no problems what so ever with piston to valve clearance. The car will mostly be for street use so I want it to have good low end power. I am not as concerned with dyno numbers as I am with track times. I would rather the car perform well than be a dyno queen. The car is a 2002 so it already has the ls6 intake. Here are a list of the mods that are on the car or going on with the heads and cam. The car is also an a4.

1 3/4 pacesetter headers with 3" tsp catted y pipe
slp LM catback
powerbond 25% under drive pulley
SLP air lid with K&N filter
LS6 intake with ported stock 2002 T.B. (pretty likely chageing to a fast 90/90 or 92/92 in the next couple months)
FMS 30lb which = 36lb injectors
yank/Circle D 3800 converter
160 degree thermostat
Stock gears for now (but will be adding 373s in the future)

TransAm2002

iTrader: (3)

Ms3

Juiced2000SS

iTrader: (1)

A good friend of mine here has pretty much the same combo in a 6sp. and he went with the MS3.

Sales2@Texas-speed

iTrader: (5)

You cannot run the MS3 with those heads without flycutting, since they were setup for it originally. The TorquerV3 will be about as big as you can go without flycutting your pistons. I think that'd be a nice combo with the converter and the 3.73's in the future! I like that you're not so focused on dyno numbers with the automatic car, but rather track performance! You've got priorities

Let us know if we can help with anything on your build!

bigfatls6

iTrader: (34)

I like the torquer 3 I have run it before but not over a long period of time. How hard will it be on valve train parts? I don't want the cam i pick to beat the valve train apart in 10,000-15,000 miles. I would rather give up a little performance than loose reliability over time.

mchdg86

iTrader: (3)

Don't over look the smaller cams man. I had those heads with a 224 cam and ran 11.8s all day long and that was with the stock LS6 intake and 3.23s.

bigfatls6

iTrader: (34)

I am going to post up the specs of a few camshafts that I like you guy let me know which one you think will work the best and also have plenty of piston to valve clearance.

231/234 .640/.590 112 LSA 2400-6800
230/236 .592/.602 112 LSA 2400-6800
232/234 .595/.598 112 LSA 1800-6400
231/234 .643"/.598" 111 LSA 2300-6800

Marc 85Z28

iTrader: (8)

No point in camming for low to midrange power with a converter like that.

DGageSS

iTrader: (9)

marc is right but i would see if you could get a custom grind to maybe match your mods better. i don't know though, maybe the torquer is the best cam for you.

bigfatls6

iTrader: (34)

Just because the converter is a 3800 rpm converter it doesn't mean the car will not run under that rpm. The car will probably leave on the foot brake at around 2000-2400 rpm. I had this same converter before and thats what it would do.

02BLACKTAWS6

There is a good writeup in the Jan 09 issue of High Performance Pontiac. They were using a Comp Cams XER273HR 224/230 114LSA. They got 417 RWHP.

bigfatls6

iTrader: (34)

do you know if that was a 6 speed car or automatic? If it was an auto what other mods did they have? Thats close to where I would like to be with my auto.

bigfatls6

iTrader: (34)

I already bought the fast 92/92 intake setup so I will be running that with the combo also.

02BLACKTAWS6

It was an auto. They had the heads, cam, LS6 intake, Fast fuel injectors, Lid, and I assume headers, catback with ORY. Didn't say anything about the exhaust though. Nice setup. They ran 12.20 at 115.96 in 90 degree heat.

1slow98Z28

iTrader: (3)

I got the TRAK cam which is ike the TV3 and ran 11.94 with cam 90 90 4000 stall 3.73 and the car was going into OD 100 er feet before the line so its got more in it and i will probly do the 5.3 PRC's if i buy the Moser M9 but if i dont go M9 ill probly get trick flows

juicedls1

iTrader: (9)

I had TSP do my heads for the MS3 and i love it! Ive threw down some pretty good shakedown passes wit it too...

bigfatls6

iTrader: (34)

What would it cost for me to send the heads back and have the valves resessed to help out with valve to piston clearance or is that even possible now?

Sales2@Texas-speed

iTrader: (5)

If the heads were not setup for the MS3 when they were originally purchased, it will not work. Unfortunately, we cannot revise them after the fact to give sufficient clearance for that combo without flycutting the pistons.