well, last night was the first night i took my combo to the track. most of you know the combo but here is a short breakdown. all the mods are listed on my web site.

69 z28
383 forged SBC 8:1
D1 procharger
vortech carb box
3 core intercooler
x2c tremec tko and 3.73's

unfortunately, i have no cage and drum brakes still so i was a bit hesitant to unload on it till i got used to the speed on the top end. it wasn't easy stopping this machine before the end of the road, but it managed. in n/a form the car went 12.3 @ 109mph

i do have video and will upload it soon. the starting line vid looks good, but it gets real blurry at the end. :-(

first pass i did too small of a burn out and the car spun the tires just as bad as they do on the street. it didn't hook hard till i hit 3rd gear.

60' 2.520
1/8mph 98.3
ET 12.69
1/4mph 124.81

second pass, i heated up the tires twice as long and let out a few pounds of pressure down. the traction was definately better off the line. on the first launch, it spun so bad off the line, i eased out the hole a little too soft. it was ending up to be a decent run though, but i did something stupid. i forgot to turn on the water pump and fan. towards the end of the run, i thought i heard some detonation and backed off. my temp gauge was over 210. this was all done on 94 octane.

60' 1.92
1/8mph 100.1
ET 11.52
1/4mph 122.4

the 1/8mph was up almost 2 mph. that should have resulted in almost 4 mph (over the first run) at the end of the 1/4. that should have put me near 128+mph.

the track was crowded, but i had time for one more pass. i burned out hard, and the tires barreled the smoke this time. after the second run's launch held down much better than the first, i was going to come out harder. the launch rpm was still only about 3000 though.

unfortunately, the tires grabbed a little too hard i think!! right on the launch, i busted my right rear axle. luckily, no other damage. since this is a STREET CAR, i had no trailer, and had to call a flatbed. :-( insurance will cover it though. somehow, this car seems to find the weakest link evertime. first it was the muncie, now the rear end.

ohh well, next year. the car was running pretty fat on purpose so i know there is still more in the tune. its weights 3550 with me in it and i pretty confident it will go 10's at 130mph+ when i get the tune and launch down better.

any thoughts.

later,

mike

www.msm.cz28.com

 

It's a good thing the axle didn't break during the run! Looks like your going to need a 12-bolt. Hitten 10's with that car shouldn't be too difficult. It must be nice to work on a car with lots of room under the hood! Our 4th gens really have cramped quarters.

 

Looks like you were on your way to the 10's with your mh increasing the way it was. Get some better hooking tires and launch that bad boy. Good luck

 

actually, EDS Z28, that was a 12 bolt. i will probably get strange or mozer axles before next season.

 

What were you on slicks? I thought 12-bolts were sposed to be bulletproof....?

 

might have been a chevy 12 bolt. the axles could have been original. even moser 12 bolts arent invincible.

 

ET streets 28x11.5".

ring and pinion are pretty strong on a 12 bolt but obviously the stock axles can't hold that much. strange or mozer are probably the next purchase and thats much better insurance for not busting again and bending up my quarter if the axle shoots out. :-(

thanks for the feedback.

mike

 

Like stated above, you're lucky it didn't break on the 2-3 shift or something!! A broken axle on a drum brake car can be a serious accident.

Awesome car though, and congradulations on your times... there's much better times to come when you get it sorted out.