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#1
06-26-2023, 12:49 PM
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Took my 72 to the track.
So yesterday I took my 72 to the track for the 1st time. It was a learning experience. Im going replace the rear springs,shocks and control arms. My question is should I remove the traction bars. The 1st run it bogged down. 2nd run tire spun. 3rd run it bogged down but it was the best pass. I will post a picture of time slips. This is a stick shift car and the rear tire is a275/60/15 Mickey Thompson Et street radial pro. I am taking this car to Norwalk since my race car is down.
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 A new best of 9.135 @ 145.4171 Lemans Sport. 72 Lemans Sport. |
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#2
06-26-2023, 12:50 PM
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Time slips.
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A new best of 9.135 @ 145.4171 Lemans Sport. 72 Lemans Sport. |
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#3
06-26-2023, 01:28 PM
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Leaving at the track on street tires with a stick is tough. Finding that sweet spot between bog and spin. Good luck! How hard is it to remove your traction bars? Try both ways and see?
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#4
06-26-2023, 01:44 PM
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I'd say it could be about a second quicker if it hooks good.
I'd try different launch techniques before I'd take the traction bars off? They relocate the lower bar? 
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#5
06-26-2023, 03:20 PM
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Best money I spent to hook my old 66 gto 4spd street car at the track was putting poly bushings in lower rear arms, and using the adjustable roto-joints in the upper. I used standard bias drag slicks at the time. I recall the car ran around mid 12's with otherwise stock suspension. I did have airlift bags in the coils, but the car really did not seem to care.
Sent from my SM-G965U using Tapatalk
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68 Firebird-- Street/Strip - 400/461 Eagle Forged Bottom End & Ross Flat top pistons. KRE 325 CFM D port, Ultradyne 263/271 @.050, .4267 lift. Crower Solid roller lifters and 1.65 stainless rockers. Quickfuel 1000 on Torker2 intake and 2" open spacer. Hedman 1.75" headers. TH400 w/brake. Ford 9" w/3.80 gears & 28x9 Hoosier pro bracket drag radial. Best ET: 1.35 60ft, 6.29 @ 107.20 mph, 9.99 @132.33 mph. 3,300 race weight |
| The Following User Says Thank You to leeklm For This Useful Post: | ||
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#6
06-26-2023, 06:38 PM
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Pictures of the traction bar.
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A new best of 9.135 @ 145.4171 Lemans Sport. 72 Lemans Sport. |
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#7
06-26-2023, 07:29 PM
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Have had a pair of those before.
Just searched, not Traction-Masters.... hmmm
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Buzzards gotta eat... same as worms. Last edited by 'ol Pinion head; 06-26-2023 at 07:46 PM. |
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#8
06-26-2023, 08:29 PM
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I'm going to take them off and see what happens.
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A new best of 9.135 @ 145.4171 Lemans Sport. 72 Lemans Sport. |
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#9
06-26-2023, 10:05 PM
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I had Stop-Hop bars, upper adjustable control arms with stock boxed arms with new polyurethane graphite bushings in my '65 and that thing would really hook and went low 12s.
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1967 Firechicken, 499", Edl heads, 262/266@0.050" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. 10.01@134.3 mph with a 1.45 60'. Still WAY under the rollbar rule. |
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#10
06-27-2023, 01:36 AM
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Quote:
Thats kind of like a slapper bar. The idea is to push the tire into the pavement on launch. GT |
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#11
06-27-2023, 06:38 AM
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Your control arm bushings look hammered. I'd replace them for sure.
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#12
06-27-2023, 08:28 AM
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I'm going to replace all the control arms. I really don't want to race this car but since my race car is down for the year I need something for Norwalk.
__________________
A new best of 9.135 @ 145.4171 Lemans Sport. 72 Lemans Sport. |
| The Following User Says Thank You to gman005 For This Useful Post: | ||
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#13
06-27-2023, 10:52 AM
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Quote:
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#14
06-27-2023, 11:17 AM
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http://clutchtamer.com/
This is an interesting idea for a stick shift car. Basically a storm door cylinder. Can adjust the clutch-to-drivetrain "hit" to soften the shock load, to reduce bog and tire spin. I am assume an experience racer can slip the clutch successfully though. There is a kit for modern hydraulic clutch setup also. |
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#15
06-27-2023, 05:56 PM
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There are centrifical assist clutches to that slows the grab to let it spin a hair also. I think a lot of the stick Stocker and SS cars use them.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
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