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#1
09-10-2022, 04:24 PM
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Coming out of the waterbox "squeak"
I've read here that it is very hard on an automatic transmission to let this happen. My question is it the same harm when doing the 1-2 upshift?
WaterBOX Last edited by DaleO; 09-10-2022 at 04:28 PM. Reason: Spelling |
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#2
09-10-2022, 05:54 PM
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I raced weekly from 86 to 2011 and always did the 1-2 shift burnout and never hurt a thing doing that.Every car I see does the squeak at the end of your burnout when the tires grip.
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72 lemans,455 e-head, UD 255/263 solid flat,3.73 gears,,,10" 4400 converter,, 6.68 at 101.8 mph,,1.44 60 ft.2007 (cam 271/278 roller)9"CC.4.11gear 6.41 at 106.32 mph 1.42 60 ft.(2009) SOLD,SOLD 1970 GTO 455 4 speed #matching,, 3.31 posi.Stock manifolds. # 64 heads.A factory mint tuquoise ,69' judge stripe car. 8.45 @ 88.1 mph on slippery street tires.Bad 2.19 60ft.Owned since 86' |
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#3
09-10-2022, 06:24 PM
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As everything in this hobby …”your mileage will vary”
I’ve personally, blown 3 sprag elements. If you run a th400 transmission, I suggest a first gear only burn out in the water box IF you run a standard valve body. If you race infrequently and really don’t care about consistent heat to the tires, carry on with your 1/2/3 burnouts….you may or may not experience an issue For a loooong time now, I ONLY do third gear water box burnouts. After the burnout, I no longer dry hop the tires for affect…..no need….no squeak ..no sprag issues. Still racing as of 9.10.22
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71 GTO, 463, KRE 295 cfm heads ported by SD Performance, RPM intake, Qjet, Dougs Headers, Comp cams HR 246/252 ...11 to 1 , 3.55 cogs, 3985lbs.....day three- 11.04 at 120mph ....1.53 60', 6.98 1/8 mile Last edited by mchell; 09-10-2022 at 06:32 PM. |
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#4
09-10-2022, 07:14 PM
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My radial slicks squeaked when they hooked way more than bias slicks. DOT radials also squeak more.
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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 [email protected] 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs 1964 Corvette Coupe 327 4 speed |
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#5
09-11-2022, 03:58 AM
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Open your door slightly or use your side mirror and glance back when you drive thru the water. I like to "blip" the throttle in the water then roll to where it's just coming out of it. Set the line-lock and start your burnout. Once the tires are heated up release the line lock and allow the car to move forward. You know at this point that the tires are going to clean off the water and stick pretty hard so ease back off the throttle so you aren't shocking the piss out of the drive train when this happens. Let the vehicle roll forward, stage the car and make your run. You will learn to time things out so you are cleaning off the tires effectively then minimize the "hit" when they finally grab.....
https://www.youtube.com/watch?v=6zVdoLR-VzM
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If you can read this, thank a teacher. If you can read this in English, thank a Veteran! https://cliffshighperformance.com/ 73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile), |
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#6
09-11-2022, 05:44 PM
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Cool, thanks guys. A related question, now driving on the street with street radials and stock TH400 does a chirp from 1st to 2nd cause any particular harm to the trans?
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#7
09-11-2022, 09:50 PM
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You should always do one spin on the water , move up to dry put it in the highest gear possible and then spin. Spinning in the water just throws water up on to the wheel wheels to drip down onto the tires .
The reason for not shifting is it destroys the sprag. If your spragless your good to go. Also you never want to move forward and CHIRP the tires as it wipes off all the hot rubber. Just let off and let the wheels spin to a Stop then move forward. Even I don’t always do this to the letter but it is the proper way to do a Burn out . Hadn’t read through the posts but cliffs explanation sounds correct as long as your not moving forward under hard power but more rolling out of it
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Happiness is just a turbocharger away! 960 HP @ 11 psi, 9.70 at 146. Iron heads, iron stock 2 bolt block , stock crank, 9 years haven't even changed a spark plug! selling turbos and turbo related parts since 2005! Last edited by turbo69bird; 09-11-2022 at 09:57 PM. |
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#8
09-11-2022, 10:00 PM
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Quote:
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Happiness is just a turbocharger away! 960 HP @ 11 psi, 9.70 at 146. Iron heads, iron stock 2 bolt block , stock crank, 9 years haven't even changed a spark plug! selling turbos and turbo related parts since 2005! |
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#9
09-12-2022, 07:10 AM
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Quote:
How can you be spragless if the direct drum contains the sprag.? I thought that is what everyone is referring too. Intermediate sprag being roller on the 1-2 up-shift.
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68 Firebird. IA2 block, 505 cu in, SD Performance E-head, Solid roller 3600 weight. Reid TH400 3:90 gear. 28" slick. Best so far 9.95@135 mph. 1.39 60 ft. 76 Trans am, TKX .81 o/d, 3.73 Moser rearend, 468 with KRE D-ports, Doug headers, 3" Exhaust 950 Quickfuel. |
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