Silvr98z28

Lee, Looks good. Are you changing classes or still running Factory Stock? What's with the new combo? I thought I had my hand full with your last combo.

FEAR THE LS1

iTrader: (1)

I was originally going to freshen up my last motor, but instead decided to upgrade it a little. My old motor was a Ls1 block, GTP 5.3 heads and a TR230/224 cam. I sold the old motor a month ago. In fact sold it one day =) My new motor will be completed next Wednesday and will be going in the car next Saturday. The new motor is still a stock Ls1 block with a stock crank so its still 346ci. But the rest is a complete custom job, very radical. The specs are something I was thinking about trying for a long time, but it just so happen the class I will fall in will be Factory Stock, will still be running N/A. See my last motor with the 230/224 was my daily driver turned into a bracket racing car, that happened to start running 10.60-10.70 after I got all the suspension installed and dialed in. I'm basically taking the same car and putting more of a race motor in there than a street motor. I'll post the details on everything soon, still need to get the motor in the car, tune it and get back to the track.

myZ

Right, but i believe this is the only h/c car with "ls6 springs" to hit 10's at 128 I was/still very impressed at such a great feat for using "ls6 springs"...i wonder how often the springs have to be changed out?...I'll probably ask the owner this...What he does and what lingenfelter recommends! My whole deal was streetability of this combo...if it gets shot down like some other of my ideas i may have to run the 230/224 110 on xer lobes with i believe duel 987 springs(cant remember what springs....i think 987's or 921's. Just wanted 2 instead of one aka.918's)...but i dont like how high i have to shift the particular combo....6,700....6,800...i would have to arp bolt the rods, but it would still own on the street!

myZ

Also...anyone have a dyno graph of this cam(218/229)? I know the 230/224 only really pulls on a 224/224 due to the high revs. But i bet this has good midrange torque like the hotcam(same duration) and of course more top end(more lift than hot cam)

Silvr98z28

Good luck on the new combo. I hope it's slow for my sake.

FEAR THE LS1

iTrader: (1)

Thanks! I guess...LOL

94form2000z

iTrader: (10)

In my opinion running a cam with .560 lift on LS6 springs is crazy and careless. The springs really have nothing to do with being streetable. The lift on the cam determines what kind of valve spring your gonna need. I'm not positive on LS6 spring specs but if they are even rated that high I don't see them lasting long on that lift. Good luck with it. Your gonna need a light car to come close to his times with the same combo.

JZ'sTA

iTrader: (23)

Lee sweet looking paint.

BTW isn't your car in the same weight area?
Are we gonna see a 9's out of a 346 H/C LS1?

FEAR THE LS1

iTrader: (1)

Yes my car weighs 3040 lbs. I'm about 212 myself right now so current race weight is say 3250 lbs. I ran 10.7x's on average and 10.6x's when the weather was nice, all motor H/C. I don't know if 9's is going to be possible, just have to wait and see

z98

Yeah, that crazy GM putting a factory cam with .550 inches of lift on those springs!

Putting out a LS6 powered Z06 corvette is crazy and careless!

94form2000z

iTrader: (10)

Quite a difference between .550 lift and .560 lift. Possible coil bind amount

Colonel

I don't know exactly what the limits of the LS6 springs are but I at least know that they're ok for .583 lift but not .600. Jayson Cohen and I were discussing the late model LS6 cam/springs the other day and he commented that I should use no higher rocker ratio than 1.8 with those springs. That would have the lift at .583.

94form2000z

iTrader: (10)

Yeah I'd probably put some money in savings to pay for new valves running those springs at that level. But that is just me MHO. Springs are too cheap to run something like that once again MHO.