72 LS5 Posted April 3, 2014 Posted April 3, 2014 3 years after dropping the 502 in ol' Blue, I got to the track last night. I'll give the numbers first, then all my excuses after , in case anybody wants to read further . The specs are .030 over 502, balanced, 10.6, Eddy Performer heads, teenie-weenie zz502 cam (527", 544", 224, 234), air gap, 4181 850 dp, 2400 converter, 3.31 posi. 1st pass: 12.3 @ 113 2nd pass: 12.05 @ 113 3rd pass: blew the tires away The weather started out in the high 70s but did dip below 70 by the second run after sunset. On the first run, the car was still hot from the hour drive at 3200 rpms to get there. My ET Streets are very old, so I came out soft with 1.9 60 ft, and then I got plagued with my tach issues as it reads 800 rpms high. Well, at the track, it decided to read like 500 or 600 high and I bounced off the limiter. Then on the second run, I bumped the timing to close to 40 and I came out harder with a 1.7 60 ft. I shifted earlier and still hit the limiter a little on both gears. I need to install a shift light! On the third run, I jetted the rears up one step but had staging issues. The car in front of me got the green so I got in the water box to start my burnout. As I'm burning out, I was easing out the box to let the tires grab and some guys in the staging area were filming the previous car and I didn't want to chance the car jerking to the left and hitting them . Not only did I redlight, but I also blew the tires away - probably due to the incomplete burnout. Wish I had more time but we got there late and some dude blew a motor, so only got 3 runs. I wanted 11s bad . Quote
Jared Richey Posted April 4, 2014 Posted April 4, 2014 I think 11s will be easy with all your woes you had. My first time out I ran 8.3 in the 1/8 mile. It dipped to 7.40 so far, I would of had a 7.3 one run but let out at first cone, dummy me. Quote
Mike 57 Posted April 4, 2014 Posted April 4, 2014 Keep on working at it, you should get there! It gets addictive! Quote
502ci Posted April 4, 2014 Posted April 4, 2014 Easy 11's with the mph you have. I am running 11.8 at 114. A couple more times out and you will have a better idea what your car is capable of... Quote
72 LS5 Posted April 4, 2014 Author Posted April 4, 2014 Bill - are you running the ZZ cam in yours too? Quote
502ci Posted April 4, 2014 Posted April 4, 2014 Bill - are you running the ZZ cam in yours too? Yes, stock cam is still in the motor...actually my entire motor is untouched right out of the crate...well except for the MSD distributor and MSD igniton box. Quote
72 LS5 Posted April 4, 2014 Author Posted April 4, 2014 What has been your best total advance and what carb do you run? Thanks! Quote
Sam (Bones) Posted April 4, 2014 Posted April 4, 2014 advance it 2* at a time until you get your best MPH Quote
footballubet Posted April 4, 2014 Posted April 4, 2014 You get the little issues tweaked and you'll be in the 11's easily. Quote
dbreese Posted April 4, 2014 Posted April 4, 2014 Awesome Mike!!! That brute has 11's in it easy. Glad ya had a good time and nothing broke. That is always a good day at the track. David Quote
502ci Posted April 4, 2014 Posted April 4, 2014 What has been your best total advance and what carb do you run? Thanks! For the life of me I can not remember what I have the advance set at. I will say though I go almost a full .10 quicker with the vacuum advance disconnected...tested that at the track. My carb is a 850 Holley with vacuum secondaries. Quote
72 LS5 Posted April 4, 2014 Author Posted April 4, 2014 advance it 2* at a time until you get your best MPH I did advance the timing on the second run about 3 degrees and it didn't seem to respond like I thought it would. Bill - strange about the vacuum advance. At WOT, it shouldn't be pulling any advance as manifold vacuum approaches 0. But hey, it works.... Quote
CrazyDavey Posted April 4, 2014 Posted April 4, 2014 congrats Mike..those are great numbers for the first time out. That's about where Red's car started out and after some tweaking we finally got it down into the 11.60's @ 117 with her just putting it in drive. There were several 10ths on the table but she told me to go play with the Chevelle and leave her car alone... Quote
72 LS5 Posted April 4, 2014 Author Posted April 4, 2014 Thanks Davey. Red's car has the same cam as well? If I can get your numbers of 11.6 @ 117 with that RV cam, I'd be thrilled and I'd leave that engine alone. 4 mph is a lot to ask, but with some good air and carb tweaking, it may be possible. Quote
CKZ03 Posted April 5, 2014 Posted April 5, 2014 Freakin awesome Mike! Sounds like you will easily be in the 11's with a little tweakin' Quote
Mike 57 Posted April 5, 2014 Posted April 5, 2014 I don't think I would go past 38 on timing. I would jet all 4 corners 2 numbers at a time. One change at a time! you will get there! Quote
VETTEWITHLEGS Posted April 5, 2014 Posted April 5, 2014 I HAVE TA CHANGE MY REAR END.....ONLY GET 91 AND 15.1 WITH MY .273 .... STILL LIFTING OIN 2ND! GREAT TIMES, MAN, JIM Quote
CrazyDavey Posted April 5, 2014 Posted April 5, 2014 Thanks Davey. Red's car has the same cam as well? If I can get your numbers of 11.6 @ 117 with that RV cam, I'd be thrilled and I'd leave that engine alone. 4 mph is a lot to ask, but with some good air and carb tweaking, it may be possible. no I put a Straub cam in it Mike....picked up 4 tenths... Quote
bills70monte Posted April 24, 2014 Posted April 24, 2014 That is tooooo cool!!!! Wish I could have been there.... you ll easily be in the 11s! Next time I'll be there. Bill Quote
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