Pimpium57

iTrader: (104)

I've already talked with a handful of sponsors about certain off-the-shelf grinds (VRX1, MS4, etc) and they've said it's a no-go on stock gears. Looking to keep stock 3.23s for the sake of long distance/highway driving and putting the power to the ground when racing from a dig on the street (full 1/4). I'm not caught up in the "bigger is better", the best ET is my only concern. Trans is built and I have rod-bolts, so I'm not afraid to spin high if needed.

Would a custom grind work best? If any of the cam gurus wanna give their ideas, I'd appreciate it!

Lemmie know what other info is needed, thanks everyone.

PREDATOR-Z

Check my thread on reverse cams.

MARKSZ71

iTrader: (3)

my car has a 323 gears and a 3800 converter i ran a 700 flat eighth with a prc 2.5 heads 2.04 valves,with a 232 234 cam,and a fast intake.I now have a lsk cam, ls6 intake, prc heads and a forged bottem end,i dont have any times but it feels good on the street and drives so much better.

GOGO

iTrader: (22)

3:73s make a 4000 stall more tolerable. There should be no problem for highway/long distance driving once the converter locks up. Just get 3:73s and GOOD pair of heads... ETP, AFR, Trick Flow, etc.... You will not need a huge cam either. Take a look at Patrick G's custom grind. Have a cam custom ground to your goals. I hope this helps.

JNorris

iTrader: (4)

Take a look at my setup. Trick Flow heads, 4000 stall, 230/230 cam, and 3.73 gears. Keeping your 3.23 gears would only hurt you by about .2 in the ¼ mile.

I was running the TEA 5.3 stage 1.5 heads with similar results.

John

V6 Bird

iTrader: (15)

With those gears you need something that will maximize torque under the curve. Im building a duplicate setup of that minus the built 60E and rod bolts for a guy here local.

JPH

iTrader: (2)

crane 228/232 .600/.600 112+3 works awesome with a set of ported heads and ls6/fast intake.

Pimpium57

iTrader: (104)

How would my cam choice change if I went with Trickflows vs TSP or TEA 5.3L heads? Does it matter?

Cop Car

iTrader: (14)

G5x3 on 110 with 3.23s and Yank 4000 here. only one complaint. i wish i had the x4.

bigger IS better. i got a good tune on my car and the car acts like it has the stock cam in it. drives the exact same as my friends 4000 stall bolt on car. except it pulls so damn hard.

dont switch from 3.23, its a good gear.

Pimpium57

iTrader: (104)

I'm with you on the gear.....when/if it breaks, I might stick a 3.42 from an M6 car in it, but that's it.

Stock heads? Where are your shift points? What model Yank is it? PT4k here.

Patrick G

iTrader: (14)

I've run 3.73 gears and 3.23 gears with my A4 F-bodies. Honestly, with the right stall, the 3.73 gears did not help my ET much (less than a tenth), but they did give me about 2 more mph. For less than a tenth gain in the 1/4, I'd recommend sticking with the 3.23s. Keep in mind, 3.23s won't allow you to rpm much in high gear so a cam with a wide intake/exhaust split probably won't benefit you.

A 236/236 110LSA +4 cam would rock though.

Pimpium57

iTrader: (104)

What kinda lifts?

Ragtop 99

iTrader: (7)

Do you run slicks on the street or are you traction limited? For a track car with slicks you'd want a lot of torque from 3800 - 4500 since that is what is feeding your converter on the launch. If you have to roll into the throttle to launch, there is no pressure for having as much torque at 4000 and having as much power as possible from 5000 - 7000 would be the way to go. You could max out 1st and 2nd gear and your converter will prevent you from dropping down to 5000 in 3rd.

Pimpium57

iTrader: (104)

I have a good suspension setup and stickies out back, and the road usually has a light prep at minimum. But occasionally, I do have to roll into it.

I'm not too worried about low end tq because the converter is very loose and just soaks it up, and when I'm not racing it, I drive extremely slow.

Patrick G

iTrader: (14)

I did not list lift because it depends on how fat your wallet is. If you have the bucks, the high lift LSK lobes will make the most power (.646"). Next on the list would be XFI lobes at .615". For LSKs, you would need the Patriot Extreme dual springs or the AFR #8019 dual springs (which are way better than Comp 921s). For XE-R lobes (.602") you could run regular Patriot Gold dual springs.

Pimpium57

iTrader: (104)

If the LSKs would make a noticeable amount of power over XFIs and XERs, then the wallet doesn't mind.

MARKSZ71

iTrader: (3)

also remember the lsk cam should have more valvetrain noise i know mine does and the lift is around 620 or so.

Patrick G

iTrader: (14)

The LSK lobes are quieter than XE-R lobes because they have a softer ramp on and off the seat compared to XE-Rs. People that have loud valvetrain with LSKs usually have pushrods that are too short. LSK lobes require a .050" longer pushrod than stock to account for the much smaller base circle. If running on an unmilled head with a stock gasket, you'd want a 7.450" pushrod. Any shorter and you place the pushrod higher and higher in the plunger, often increasing the noise.