Hi buick nuts my name is don and i have a question or two. I'm new to this form and hope you people can help me. this is where it starts my 71 GS posted a 1/4 15.831 @86.87mph in bowling green . and i was thinking that for what i have in it that is not very good. what i have it is t/A intake. holly 750. schieder cam. poston headers. HEI dist. the block 30 over. headwork done lost flow chart but about {$250] worth. turbo 350 with shift kit. and i think some of my problem 308 gears ready to swith to342. I think i spent alot of money and parts to get a 315hp motor to get to 352hp now. any adviice my total timing is 37. or is that time ok for 352 hp.
Do you have a converter? What size and type of tires? Also MPH is the best way to determine power, it is always consistent.
this is don and i do have a stall it is a BTE bought it from the the GSCA made for my motor and my 60 foot time is 2.393 and 1/8 is 10.204 i"m not sure if my times are good. i would exspect faster mybe wishfull thinking. oh ya tires 14''s check on hieght when i get home from work thanks for any imput.
I would run that time of 15.8 with almost the same setup as you Donald. So your not out of the ball park yet...The gears are hurting you...the same as me :laugh: . I plan on putting in 3:42's as well, but I also plan on adding a T/A intake, and 212 cam in my 350....From what I hear, that combo should get me into the 14's range, but I have to see it to believe it...I will keep everyone posted as to me findings! :TU: .....I still have some small issues, but I will see in the next few months what goes on. Larry
212 cam and ta intake the 212 cam and intake is a good combo woke my buick up, headers and head work help too
Should be better... Don, What was the "seat of the pants feel" on your runs? Did the car spin off the line, feel like it was pulling hard through each gear, and not drop off on the top end? My '69 350 dynoed at 347HP and has run a best of 14.15 @ 96 at BIR last summer. I'm running a 3.23 gear with 14" radials, a shift-kit in a T350, TA headers, .030 over 10:1 pistons, TA 290H-94 cam, stock intake manifold, stock points ignition, and a quadrajet. I think you should be able to tune 14s out the setup you have.
this is don...ken you say you are a 14.15 1/4 think that is great with out some of extra i spent $$$$ on. intake .carb. but still i feal i 'm missing something but not sure. my 60 foot time is2.393 and your gears are close to mine. larry asked how the car felt i feal it comes off the line weak no wheel spin at all.feals like the rpms take way to long to get up thier. after the 60 feet it seams to be pulling the rest of way I never raced before they almost had to say go. I also feal that I shited to soon I crossed the 1/4 at only 3700 rpms I think I shifted at 4000 out of first and second. way to soon right.
Man your 60' time is way off. It makes me wonder if your engine was bogging down when you took off. What is your stall speed before launching? Did you WOT the engine in park or neutral before raising the to stall speed. This helps with carbs that load up slightly. I have 195/50/15 on the back of my ss and I can not believe your 14 inch wheels did not spin some with your engine. I will let you all know how my firt time at the track goes. Man sounds like you need some engine tunning your car should be in the low 14's easy.:beer Julian
Don, My 60' times are usually in the 2.1 - 2.2 range. I leave the line at an idle and shift 1/2 at 5200 and 2/3 at 5600 rpms. If I remember correctly I cross the finish line somewhere around 4500 rpms. I'd guess that there's some tuning issues with the combo you're running. That thing should spin the heck out of the tires with a little power braking. What are the specs on the Schneider cam you're running. I had a problem with mine when I tried running a cam that was too big for my combo. I switched back to a cam with less duration and lift and the car went .4 quicker in the 1/4. With the 350 it's all in the total package. Have you ever been to the Musclecar Shootout at Brainerd Intl Raceway? They moved the dates this year, it's now September 5-7. My brother and I will both have our Buicks there again this year. I hope to run some 13s this year!
to everyone , I am new at this and just as confused I guess . I hear one person say my 60 foot time is way off but then on the other hand I hear 2.1 60 foot cars runing 14,s sounds alot better than me.hear is a little more info on my car I located my cam slip it says [Schneider cam]230/240 @.050'' my tires are 245-60-14 radials. and if I want to power break I can spin the tires dident think I would need to do it with my set up I have... I have been wrong before.and one more thing with my stall BTE brand bought through JOHN? @ GSCA. made for my specs. how are you supposed to use it. I bassicly floor it at the I leave the line late I might add, I will get better at that for sure before BIR this year and with alittle help mybe in the 14,s 342 gears and input by all willing to help. and ken hope you get to 13,s .
Not that I've tried this at the track but... I can stomp on the gas and leave 1 (open reared) stripe on just about any of the roads around here, whether they are new, old, or concrete parking lots with the same sized tires. Less now than I could with my Dunlops... but still can. My car is stock as far as I know, still a 2bbl, and at WOT it shifts into 2nd at 60, which someone says is the same as their 3.08 reared car... but that doesn't mean much. It sounds like there are some tuning hiccups somewhere in your setup.
What happened to the Quadrajet? There's plenty of guys in the club who swear by them and for your application I'm not quite sure why you went with the holley. The Quad's, when tuned correctly for your particular application, are incredible performers. Don't let the Holley freaks convince you otherwise. Guys don't "generally" switch to the holley's until they start going off the charts with horsepower that the Quads just weren't designed for. Just curious. Also, regarding your anemic off-the-line performance, the first thing that comes to mind is timing. My mind at least. How's it set? How's the cam degreed etc.?? There is a load of knowledge here on this board, so be patient, eventually, I assure you, if you ask enough questions, they will ALL be answered. :TU:
My timing is at 37 total. the motor was on the dyno and tuned........my numbers go like this @3500 362.8 [torque] 254.6 hp @4300 378.4 [torque] 309.5hp =@5100 387.2 [torque] 352.3 hp.I thougt I read somewhere else that the stock 315hp sp motor that I started with had more torque then I finished with . or where thier numbers off. for as far as the carb,, got it new for some paint work I did , but going to send my carb off to be redone at the quad shop any info on that shop.I heard at nats he was one of the best.. I still think 342 are going to help along with some expirience and time. also when i hade some stock tires on the car they spun easy I might puts some rags on it just to see if I can burn them up..and you are still wrong if there is no woman there, and to make sure of it, just ask my wife.
Skyphix, sounds like 2.56 gear to me, same as mine, which is what a 2 brl car would have come with. Don, the is something REALLY wrong here. My car, full wieght 4 dr AC car, with only a q-jet, stock intake, and exhuast manifolds, dual 2 1/2 exhuast, and HEI/MSD wan 15.751 @88.3 MPH. That is with stock untouched motor, and 2.56 gears. MY transmission does shift nice and hard, so that might be worth a little too... Stick with the holley. Yes you "can" get performance from a q-jet "when properly set-up". But properly setting them up is hard, and you can just run a holley, easily tune it, and get the same or better performance than a Q-jet. I had a q-jet for a while, used to love it, then I went holley... Horse power ratings where different back then, so don't worry about that. What are the specs of the cam? Something is either not working right, or really mismatched.
72skylark: Thats about what I figured it to be, I've just been too lazy to crawl on the anti-freeze soaked concrete to read the numbers. I get entirely too good gas mileage on the highway for it to be anything else. Timing is what I suspected, or maybe an overly rich idle mixture???
Don, This sounds like a combination problem to me. The cam specs out pretty healty. I would be looking to put 3.73 gears in the car. To really figure this out I'd need : weight of car, what is the footbrake stall of the convertor. It sounds to me like the typical: heavy car, not enough gear, not enough stall, and too large a cam. Also, if you shifted the trans at 4000rpm, and your peak hp is at 5100rpm, you are wasting all your power. Try shifting at 5200-5400rpm. You are shifting when the camshaft is just beginning to do its thing. Phil
Don in order to get the max performance from your convertor you need to "flash" it. This is done by foot braking just below the stall speed until the light goes green then you mat it. 3.73 gears are probrably in order for a cam that large. You never did post a MPH, that is what is really important for tuning not ET.
hey guys someone just said they think my cam is a large one. I was under the impresion that my cam is pretty mild that info coming from john at gsca . my mph is about 87mph.My stall speed I do not know. can someone tell me how to find out john at gsca told me give him the numbers of my dyno and rear end and he sent me this one $425 and I installed it. mybe I need more info how can I tell stall speed.. mybe I,m giving the wrong # on the cam sheet. can some tell me where to read the # on this sheet. I told you guys my cam is 230/240 I got this info from the ##,s reading duration at .050'' camlift is this right.. and I am in the twin city's area who can I bring the car to for some tuning. as for as my combination is concerened. allthough from the dyno they say it's tuned to go. that shop was R&R peformance. again my best torque is 387.2 why is that lower than stock.and any 342 posi for sale my rearend has a noise under on load two plases say replase the rear end cheeper than all the parts..going up norh this weekend I do have a line on one I hope.342-355?
Don, the numbers you gave on the cam are the right ones. I would want to have a 3000rpm stall convertor in there AT LEAST, since your peak torque is a 4300rpm. You can get an idea where it stalls by having the car in first gear, holding the brake tight, and giving it gas until the brakes wont hold anymore. PLease do this in a large open area with nothing to hit. I think 3.42 gears are not going to be enough for you. 3.73 minimum with 4.10's if you really want to get moving. Dont forget, you were also shifting before your torque peak, so go back and try again shifting at 5500rpm or so. DO NOT get any tuning. You've already got the motor running well, you just need to work with the other parts in the combo. What does your car weigh? Or a close guesstimate? Phil
like I said, my stock 4 dr AC car ran a 15.751 with 2.56 gears. Something is seriously wrong if it is running slower than that, in my opinion. Throwing some gears at it isn't going to help, it will make it faster, but will still have a problem. How many runs did you make? Try again, it maybe just a drivin issue. Bring up the shift points a bit, and check the obvious things, like throttle not opening up the carb all the way.... I would get the setup you have working right before changing anything. The stock numbers are rated without any accesories hooked up, and with a special dyno exhuast. It sounds like you used a engine dyno, so I don't know if it was tested with accesories or not.
