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#1
09-02-2024, 10:26 PM
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Reaction Times/ 2-step with a line lock?
I hate to admit it but at 54, I'm not as quick as I once was.
 I've always been a No Box/Footbrake racer but I just can't footbrake lights like I once did. I raced Friday, Saturday and Sunday this week and the absolute best light I could muster was a .061 and most of my lights were in the .2+ range.  I tried deep staging but my car launches too hard with a 1.58 60' and I keep red lighting.With that said, I was really thinking about installing a 2-step with a line lock. I have an excellent TCI drag race TH350 now but I'm reluctant to put a transbrake in it and I really don't have the funds to buy a new TH400 and a new/resized driveshaft and safety loop. My car still has the factory drum brakes so I was thinking of upgrading to rear disc brakes and installing one of my Mallory HyFire ignition boxes (#695) with a 2-step and a rear brake line lock, both hooked to a button on the shifter. Thoughts?
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 Johnny US Army Retired1978 T/A 463 Pontiac, KRE 74cc 300CFM D-ports, Howard's custom SFT, Nash Intake,QFT 950 E85 carb, TCI TH-350, 4200 converter 3.73 12 bolt [email protected] 1981 T/A 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, Crosswind intake 750 Street Demon, 3.42 30 spline Eaton posi street car. 1972 LeMans 350 Pontiac H/S Drags project Last edited by Johnny406; 09-02-2024 at 10:43 PM. |
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#2
09-12-2024, 05:25 PM
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How quick is your car now??
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#3
09-12-2024, 07:19 PM
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Check to make sure it is legal for the class/venue you are running.
Some places do not allow a button to launch the car, even if it is to the vehicle brakes. K
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'63 LeMans Convertible '63 Grand Prix '65 GTO - original, unrestored, Dad was original owner, 5000 original mile Royal Pontiac factory racer '74 Chevelle - original owner, 9.56 @ 139 mph besthttp://www.superchevy.com/features/s...hevy-chevelle/ My Pontiac Story: http://forums.maxperformanceinc.com/...d.php?t=560524 "Intro from an old Assembly Plant Guy":http://67-72chevytrucks.com/vboard/s...d.php?t=342926 |
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#4
09-13-2024, 10:30 AM
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Quote:
Here's a timeslip from the pro class a couple of weeks ago. I'm 488 (right lane).
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Johnny US Army Retired1978 T/A 463 Pontiac, KRE 74cc 300CFM D-ports, Howard's custom SFT, Nash Intake,QFT 950 E85 carb, TCI TH-350, 4200 converter 3.73 12 bolt [email protected] 1981 T/A 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, Crosswind intake 750 Street Demon, 3.42 30 spline Eaton posi street car. 1972 LeMans 350 Pontiac H/S Drags project |
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#5
09-13-2024, 11:55 AM
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Try some changes to the car first . Smaller front tires, raise pressure in rear tires, etc. With as fast as that car is you should not have a problem cutting a light.
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#6
10-02-2024, 04:03 PM
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I have done this with success, they key for me was the torque converter. It had to be loose enough that I didn't have to fight pumping brakes and perfect the line pressure when staging. It was a mild sportsman car that ran low 8's in the 1/8th. Once we got the converter in a happy place, I could roll in and stab the brake pedal one time, and set the line lock, and with the chip way down, it would never creep or roll. This is nice when the track is on autostart so you don;t have to sit there and build brake pressure to get the car to hold. I've actually wired in a delay box to this setup to do some top bulb stuff too which is interesting.
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