Help Need a better 60ft!!
Thread Starter
TECH Fanatic
Joined: Jan 2010
Posts: 1,343
Likes: 2
From: South of Augusta,GA
Help Need a better 60ft!! Ok Ill give my setup.(14/15psi) 1981 TTA, 5.3, Ls1 intake, 706 heads hand port exht side,GT 45 trubo, 60lb inject,FMIC,and snow meth inject. LS6 cam& springs setup, and 7.450 pushrods, 3300 stallTCI, 3.08 posi, 295/55/15MTET, car weight3900. 3.5inch downpipe, spilit to 2.5 to duals.
So I have guys wanting to run me at the track for cash, Im thinking his car runs 6.0s in the 1/8. The best I cn get out of my car is 7.74298.9mph, with a 2.0/60ft. I launch with 4psi shifted at 6000rpm. Car has a TH350 trans. Now Ive tried the things that I know of. I have HPTuner, and was wondering what kind of timing I need at launch, any tunning info that will help. Also I ordered a 2step this week, can you tell me how to make the best of that. The best Ive got out the car is 11.60@129.9/ 7.85@100, bit thats with a 2.02-60ft.
So I have guys wanting to run me at the track for cash, Im thinking his car runs 6.0s in the 1/8. The best I cn get out of my car is 7.74298.9mph, with a 2.0/60ft. I launch with 4psi shifted at 6000rpm. Car has a TH350 trans. Now Ive tried the things that I know of. I have HPTuner, and was wondering what kind of timing I need at launch, any tunning info that will help. Also I ordered a 2step this week, can you tell me how to make the best of that. The best Ive got out the car is 11.60@129.9/ 7.85@100, bit thats with a 2.02-60ft.
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Does the trans have a brake? I had mine at around 25* on the brake in the rpm range i wanted to launch at and around 12.5 afr. It would build 10lbs on the footbrake without the 2 step pretty easily.
Thread Starter
TECH Fanatic
Joined: Jan 2010
Posts: 1,343
Likes: 2
From: South of Augusta,GA
Think I can load a tune on here.This is a pass. my MPH stop working, and the WB on screen dont match the one in the dash, anyone can help? On this pass it ran 11.65@129.9, and 7.85@100 mph, annd 2.0 60ft, this is a pass in the street, with a Gtech. So traction was limtited.
Last edited by MillsMotorvation; Oct 5, 2012 at 08:27 PM.
Think I can load a tune on here.This is a pass. my MPH stop working, and the WB on screen dont match the one in the dash, anyone can help? On this pass it ran 11.65@129.9, and 7.85@100 mph, annd 2.0 60ft, this is a pass in the street, with a Gtech. So traction was limtited.
You have to be able to control weight transfer and control the separation of the rear suspension.
You cannot have a car that squats in the rear as it picks the tire up while the body pushes down.
You want the tire to push down into the ground planting itself and the body to move up away from the tire as it plants.
Having too much separation or too violent separation will either put the car into a wheel stand or just crush the tire and be inefficient. You want to be able to slow down the hit of the tire with extension of the shock and then control how it stays stuck once it does plant with compression.
With a single adjustable you cannot adjust compression separate from extension. You're adjusting both at the same time which on a radial is not conducive to fast 60' times.
I have double adjustables on my nitrous race car and it is probably one of the most important tuning tools I have while I'm at the track. They have made my car extremely predictable and consistent after I learned what the car wanted with the current suspension set-up(instant center, anti squat percentage etc.) and able to get me 1.29 60' times every single time.
Thread Starter
TECH Fanatic
Joined: Jan 2010
Posts: 1,343
Likes: 2
From: South of Augusta,GA
Thanks a lot, will look into better shocks. I want the car streetable. Took me forever just to remove the front sway bar, but it helped alot. Thanks for all the replys. What budget friendly shocks should I try?
QA1's or Strange single adjustables will most likely be your best bet.
If you can swing the Strange double adjustables that'd be the best budget friendly modification you could do no doubt.
If you can swing the Strange double adjustables that'd be the best budget friendly modification you could do no doubt.
You'll want to start with the compression 1/2 from full tight and the rebound 1/2-2/3 from full tight.
If it plants the tire violently and goes into a wheel stand you want to tighten the rebound.
If it shakes on the hit tighten compression and/or raise air pressure.
If it hits the tire like you want, but spins more than 20-30' out you need to tighten compression.
If you have the rebound set closer to full tight and when it plants the tire it bounces like a basketball you need tighter compression.
These are just a set of very simple guide lines to follow.