LSXTREME improvement update
#1
7 Second Club
Thread Starter
iTrader: (18)
Join Date: Mar 2004
Location: Cincinnati, Ohio
Posts: 790
Likes: 0
Received 0 Likes
on
0 Posts
LSXTREME improvement update
Thought I would give a quick update on performance since I broke into the 7's a couple months ago.
The month following the 7.81@188mph (5.14@152mph-1/8th) at Milan dragway I fought some suspension issues that made the car very inconsistent in performance (including a part breaking wheelstand unfortunately) but last trip to Milan I still managed 3-7.7x passes with the best of 7.76@188mph. I had also made a change in the converter and advanced the camshaft that I thought would drop the percent of slip and pick up some performance but the slip actually went up, hence the no change MPH with the better ET. I left knowing there was still more in the car but I had to resolve the converter and chassis issues.
Went to two 1/8 mile races after that still fighting suspension issues and no improvements.
Tightened the converter up this week and it all came together at an 1/8th mile race at Ohio Valley Dragway last night. In the second round of eliminations I raced one of the top qualifiers and lost (tough competition down there) but that's the happiest loss I have had in a while, lol. The car went 5.07@150MPH. Best pass of the night prior to that was a 5.23. The tighter converter needed more power off the line but the suspension needed to handle it. It's alot closer to being dialed in now.
As always, thanks again to my crew, it's tough for people to get away from family life and help but one of them always seems to come through and I'm very thankful. Also a little crewing help from my sister team,lol (the Ohio Boys) on the starting line was also much appreciated.
I also want to thank Madman for some technical support on the suspension this week.
I do my own tuning but I also want to thank Mike Brown and Phil Thomas for a few tips getting me to think "outside the box" that has also helped the past few weeks. We are racers and competitors but friends...sharing data/info seems to be taboo but everyone wants to see everyone do well so that makes this giant money pit of a hobby more fun.
Finally thanks again to Kurt Urban at KUP for standing by while I field test and beat up this hydraulic roller motor. For those interested, it's been to 8100RPMs a couple times by accident and seems to not care! I told Kurt I'm gonna just keep raising the rev limiter so I don't hit it again
Mark
The month following the 7.81@188mph (5.14@152mph-1/8th) at Milan dragway I fought some suspension issues that made the car very inconsistent in performance (including a part breaking wheelstand unfortunately) but last trip to Milan I still managed 3-7.7x passes with the best of 7.76@188mph. I had also made a change in the converter and advanced the camshaft that I thought would drop the percent of slip and pick up some performance but the slip actually went up, hence the no change MPH with the better ET. I left knowing there was still more in the car but I had to resolve the converter and chassis issues.
Went to two 1/8 mile races after that still fighting suspension issues and no improvements.
Tightened the converter up this week and it all came together at an 1/8th mile race at Ohio Valley Dragway last night. In the second round of eliminations I raced one of the top qualifiers and lost (tough competition down there) but that's the happiest loss I have had in a while, lol. The car went 5.07@150MPH. Best pass of the night prior to that was a 5.23. The tighter converter needed more power off the line but the suspension needed to handle it. It's alot closer to being dialed in now.
As always, thanks again to my crew, it's tough for people to get away from family life and help but one of them always seems to come through and I'm very thankful. Also a little crewing help from my sister team,lol (the Ohio Boys) on the starting line was also much appreciated.
I also want to thank Madman for some technical support on the suspension this week.
I do my own tuning but I also want to thank Mike Brown and Phil Thomas for a few tips getting me to think "outside the box" that has also helped the past few weeks. We are racers and competitors but friends...sharing data/info seems to be taboo but everyone wants to see everyone do well so that makes this giant money pit of a hobby more fun.
Finally thanks again to Kurt Urban at KUP for standing by while I field test and beat up this hydraulic roller motor. For those interested, it's been to 8100RPMs a couple times by accident and seems to not care! I told Kurt I'm gonna just keep raising the rev limiter so I don't hit it again
Mark
Last edited by BlwnTA; 09-20-2009 at 06:59 PM.
#3
7 Second Club
Thread Starter
iTrader: (18)
Join Date: Mar 2004
Location: Cincinnati, Ohio
Posts: 790
Likes: 0
Received 0 Likes
on
0 Posts
Theres a few recent ones at the bottom of this article.
http://www.planetlsx.com/vehicles/Sh...d_Firebird/102
#7
7 Second Club
Thread Starter
iTrader: (18)
Join Date: Mar 2004
Location: Cincinnati, Ohio
Posts: 790
Likes: 0
Received 0 Likes
on
0 Posts
Mark
Last edited by BlwnTA; 09-20-2009 at 07:03 PM.
Trending Topics
#11
7 Second Club
iTrader: (11)
I was very stoked to hear your improvements because I know after I saw the data there is a TON of performance left in the combo. I'm glad the converter suggestion worked. One thing Mark left out..Yeah the car went 5.flat but he was out of the throttle for OVER 1 second. Car wasn't WOT until 1.96 seconds into the run. Congrats man, the car has EASY 4.8s in it with a couple more tweaks and the one last addition we talked about. What are the boys up north going to do when you start running consistent 4.76-4.82s....
#18
7 Second Club
Thread Starter
iTrader: (18)
Join Date: Mar 2004
Location: Cincinnati, Ohio
Posts: 790
Likes: 0
Received 0 Likes
on
0 Posts
Thanks Todd, you going to make it to Memphis?
Yea, almost called you after a 5.23 pass that I pedaled early beacuse it started to power wheelie but I made an adjustment to the front extension added a little weight and that did the trick on the 5.07.
Appreciate the advice the day before! Hope to fine tune it at Milan in two weeks.
Appreciate the advice the day before! Hope to fine tune it at Milan in two weeks.