If you can post what the time slip says, that may be able to tell us a little more. 60ft, 1/8th et and mph to go with the slip you have. Refer to my earlier post. It will take some time with some tools and getting to know your car. Time spent with a couple of beers and some soon to be friends on the circuit will yield some big dividends.:beer
Tha answer is E. All the above. p Sounds like either you're running too much advance, or you're leaning out on the top end with the MPH falling off like that. Also, windows UP are usually a rule at ALL tracks. Plus the A/C has to be turned off as the condensation leaves slippery wet spots on the track. :idea2:
no way do you run the a/c,you should also take the comp belt off,and come out of the hole in 3rd and shift into each preceeding gear at the same rpm which you'll need to figure that out somewhere around 6000-6500.you'll need some 110 octane race gas about a 50/50 mix with pump gas so you can advance your timing to somewhere around 40-something else you'll need to play with[advance it till it slows down]then back it off 2 degree's.only make 1 adjustment at a time,so you know whats helping or hurting perf,tire pressure-50 in the fronts,25-28 in the rear-something else to play with.yes windows up-they make you do that on each run,i almost forgot -wear a thong,its less wieght,rusty does.
Kirk, If you run a Bu-hog up to 6000-6500, you'll be decorating mid track with internal engine pieces. I'm still putting my money on a choked-up exhaust system. A Buick 455 HAS to be able to breathe. 2 1/2" mandrel bent with x-pipe. You should be in the 101-103ish range with a "stock" 70 engine. My bone stock 72 Stage1 ran 13.90's@100mph This was a low compression engine with the factory GM cam, only change was the above mentioned exhaust system, and really no other tuning. This car weighed 4138 with driver.
tom,i don't know anything about buick's,[quiet brian] i was trying to give him some general idea of how to drive it,the rpm was a guess,and is something he'll have to play with.
I would have thought by now someone would have mentioned checking the heads. First make sure the head flow is where you want it, then go with other components and tweaks that compliment that.
Jim, MPH in the quarter mile is a good indicator of horsepower vs. weight. ET, on the other hand, is more an indicator of how well you are able to apply that horsepower to the track -- ie, traction. Of course, MPH and ET are somewhat dependant on each other, but those generalizations still apply. And that's not just legend -- it's physics. Your car's ET (and 60-foot) and MPH are right in line with each other. A car which runs 97 mph should ET and 60' about what your car does. That means the chassis, gearing, and torque converter are already set up pretty good. Anyone who's running much more MPH with about the same ET is traction-limited; in that respect, they're in a worse place than you are. As the others have said, your car in Pure Stock form should probably MPH a bit better. You just need to find more horsepower (or eliminate weight) in a legal manner. Start with the basics: carb and ignition tuning. And then there's technique. Consistency should be your goal. When you are able to launch consistently, you will be able to reduce your reaction time without fear of red-lighting. The added bonus is that the more consistent your launch, the better you can see the effects of your tuning changes. Without consistency, you just as well be using a ouja board. Shoot for RTs of less than .050, but certainly less than .100. You will win 90% of your races in a Pure Stock format if you can do that, because everyone else drank too much beer last night. Leave on the third yellow. If that gives you a red light, learn to stage more shallow. If it gives you a slow RT, learn to stage deeper. Find the magic staging depth, then learn to put your car in that spot every single time. After that it's just a matter of focus.
Wow you guys are great! Brian thanks for the in depth explaination. Like I said it's all new to me, never did carb tuning or timeing for preformance, but I look forward to aquiring and applying the knowledge learned. :TU: Thanks Jim
Jim, Rich and I live just south and east of you. We are in the Metamora and north of Rochester. We have a couple of work shops and could help you out if you wanted to come down with the car and have a beer and do a bit of setting up. Donny know's were we both live and I am sure would come over and have a beer also. NO one has taken a singular car apart as much as Donny!:eek2: Sorry Donny I had too. Also this may help you along. You will have to suck up the Buick pride and buy the High Performance Pontiac magazine. I just finished an article with Dan kicking in some help by writing up the rules/back ground on PS racing, it will chronicle full drivetrain and chassis set up for PS racing. It is in conjunction with seven straight issues of PS cars in the Pavement Pounder section. The next issue (not the one just hitting selfs but the next one) has motor detials. Lot's of pix and text. The following issue has trans, axle and suspension. Both leaf and coil spring chassis covered. He gave us tons of space for these articles so we can be pretty elaborate. The next two issues should have around 14 pages of all PS articles each. Mark
Hey Jim - I got back into fooling around with classic muscle about 8 years ago. I've only had one toy car in that time - '68 GS in my signature. It's been apart and back together a couple of times. It's not stock as it has a 455 instead of the original 400, but it runs in the ballpark of what your car should. I've invested lots of learning time, bought tools, parts, and messed with getting the car to run the best I could. This board is great, but you have to think for yourself - there's enough differences between models and differences of opinion between racers that you will need to be "inner guided" in your quest for speed. I think that the single most important thing for you to do is get to the track early and often and make friends with as many of the Buick guys (and gals) as possible. This is an incredibly easy thing to do, and you will meet some of the best people around. I won't post names, but look for a white and green trim "Sparty" GSX... Well, maybe I will just post some first names; lessee, theres Dave, Roberta, Rob, Bobb, Geoff, Amy, Joe, Norm, and some guy named Greg from Joisey. Good choice on the cars, and I look forward to meeting you this year - John Eberly
<a href="http://s180.photobucket.com/albums/x215/jj455/?action=view¤t=DSCF1391.jpg" target="_blank"><img src="http://i180.photobucket.com/albums/x215/jj455/DSCF1391.jpg" border="0" alt="Photobucket"></a> John...You mean this Dave! I met him at the Martin meet alought I was there as a spectator. Met Amy, Roberta, Dave, Menzo, and Nick! Good people one and all. Also talked to Donny and Jimmy J. That's where I knew I had to try Pure Stock. Looking forward to meeting the whole Pure Stock group. Jim
