ChrisB was running some serious numbers back in the day with ported LT4s and a cc306 @ around 3600lbs. If memory serves it was 11.2@121 but someone said he may have hit 123.

 

LOL! It's a decent size cam, but people just won't believe how streetable it still is... definately not a daily driver cam.
If the duration scares you then I guarantee you don't want to know the LSA.
Too bad I never put some 4.10s in the car before the motor got hurt. I was only trapping at 6,300 with the 3.73s and need to be in the 6,800 range for best results.
Steve...

 

duration on my cam is 238/252 109 lsa .6xx/.6xx lift.. stock bottom end. still need tunning and gears to get some times down. car went 12.1 un tunned with a 3:23 and 28" tires.

 

I can tell you that SARs cam makes mine sound like a little girls cam.

yes...LT1 testing is going on again..it may be me and steve doing it at thunder but it is happening..lol. But I'm staying with the dreaded and feared SOLID ROLLERRRRRR....

 

SARs what are your full spec's on your cam.....

Who is making custom cam's or has cam's that will put your car's in the low 11's high 10's and BIG MPR with a HR cam???????...and so on....

Sar's & 95 Bird you both work at thunder racing????...

 

My cam is only ~220/226.

 

SAR works there..I just drop by and bother everyone.

Everyone needs to remembers its not just a cam that will get these cars in the 10s. Its a total package. Everything must work with everything else. low 11s/high 10s are nothing to take for granted..this isn't the fast and the furious. Any cam maker will cut you a custom cam..coming up wtih the right one is the problem. My cam is a cam motion grind..SARs is a comp cam grind.

 

Lol, what is it, like 106 or lower?? Whatever it is, the power was top notch. I'd have liked to seen what your car would have done before it broke.

 

This is what it is going to take along with great heads.
I cant wait to see more LTx motors going fast NA!!

 

I’m counting down the minutes until some idiot asks about using it with stock heads

 

Ok, after giving some crap to the local heads/cam ls1's and getting some crap from them it made me think a little. Currently I'm runing 11.84 at 114.7 with a 1.65 60ft off rev limiter in 1st(barley touched it though due to the et streets being taller). Now the quickest local ls1 guy all motor (stock bottem end) is 11.61 at 117. I'm going to try to beat his time, and got a few ideas. First off I need to remove some weight off the car, which I think I can get 100lbs off of it as it sits. Next I'd like to do like some othres on here have and remove my belt for the run. Next, I'd like to wire up a lockup switch for my converter. Also, I want to run lower psi in the et streets and get my 60ft down to 1.63 or better. So, you think I can beat his 11.61 pass by doing those things?

 

any weight you can take out is a big advantage. Run as much pressure in the et streets that you can without spinning..any less and your loosing et/mph up top. Do you run skinnies at the track? Ice down the intake...the ls1 boys cant do that. Experiment with launch rpm(stalling at the line)..some converters like to be flashed..some like to be loaded up for best 60'. If that 11.84 was in great air....with the summer coming thats gonna be working against ya. Good luck...I bet you can beat that with just some smart racin/prep. The belt, weight removal, iceing intake, proper launch and lockup should get you there pretty easy...but don't lock it up too early and bog your motor down.

 

Yes i run skinnies. It was in decent air, so I know I will have that against me. I've only stalled the converter once, and have flashed it all other times. Hell, I've only ran this setup 7 times on two different nights. I need more practice with it, but I think these little tricks will help me get the et I want.

 

100 lbs will be .1, the belt will be between .05 and .1 and both of those mods will help get the car out faster so will pick up in the 60'...helping you pick up some more et. Locking it up on the top end will be trial and error untill you find where it wants to be locked. Icing the intake has proven .8 on a couple of cars down here...I've never done it so cant give first hand info...maybe I need to try that..lol. Launch the car at different rpms untill you find what the car likes best. Start at idle..then load it to 800..then 1000..then 1200..etc. etc. etc. Your gonna have to learn what the car likes best. If you have lt1 edit...add some timing down low to help it get out of the hole..then pull it back in the upper rpms.

 

Another low 11 sec N/A LT1. 11.24@120.8mph 355" LT1,CC306, Lt1 castings, 3.42's, 3800 converter, 10.8.1 compression, 3500lb raceweight and a 1.58 60'.Later