Low trap speed
Low trap speed I finally got car my car to the track. It’s a 99 ws6 a4 with yank 3600 and 3.73 gears. Stock weight. The car put down 460 to the wheels on the dyno. I ran the car twice at the track the other night and ran 11.80’s @ 117 mph. My 60’ times were about 1.75. I really thought the car would trap about 120 mph and get to mid 11’s. What do you guys think??
TECH Veteran
Joined: Sep 2014
Posts: 4,893
Likes: 703
From: Mississippi
I finally got car my car to the track. It’s a 99 ws6 a4 with yank 3600 and 3.73 gears. Stock weight. The car put down 460 to the wheels on the dyno. I ran the car twice at the track the other night and ran 11.80’s @ 117 mph. My 60’ times were about 1.75. I really thought the car would trap about 120 mph and get to mid 11’s. What do you guys think??
TECH Veteran
Joined: Sep 2014
Posts: 4,893
Likes: 703
From: Mississippi
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I finally got car my car to the track. It’s a 99 ws6 a4 with yank 3600 and 3.73 gears. Stock weight. The car put down 460 to the wheels on the dyno. I ran the car twice at the track the other night and ran 11.80’s @ 117 mph. My 60’ times were about 1.75. I really thought the car would trap about 120 mph and get to mid 11’s. What do you guys think??
Who's dyno?
Even with the 3600 converter you should be hitting the tires harder and with the top end you have, you should have a higher mph.
Since my car is broken, let me come take it for a test spin!
TECH Regular
Joined: Aug 2003
Posts: 453
Likes: 0
Al
Was this at KRP? I can never get a number similar to what is posted in these boards.
Who's dyno?
Even with the 3600 converter you should be hitting the tires harder and with the top end you have, you should have a higher mph.
Since my car is broken, let me come take it for a test spin!
Who's dyno?
Even with the 3600 converter you should be hitting the tires harder and with the top end you have, you should have a higher mph.
Since my car is broken, let me come take it for a test spin!
Idk....i trapped a best of 131.3 with 417whp (bolt on ls6) and knew where more mph was. There are methods to get it done.
These days a solid running bolt on ls1 should get to 120ish imo.
So yea. I would say op mph is way down.
These days a solid running bolt on ls1 should get to 120ish imo.
So yea. I would say op mph is way down.
There is no way a full weight 98-02 fbody with full bolt ons is going to trap 120mph IMO. My trap speed is low by a couple mph. I’m looking for someone that is going to suggest better Da, a little higher numerical gear ratio, higher stall, or something else realistic. The one thing I don’t like is the rpm drop when I shift from 2nd to 3rd.
For comparison I went 1.55 60', 11.64 at 115 this summer. Don't recall the DA but let's say 2000'. I think I have it posted elsewhere. This is a 99 Camaro with a 5.7, with an LS6 top end, intake and 243 heads. Summit cam, UD pulley, Hooker Blackheart TD, and a 4000 stall converter, Racestar rims. I was still tweaking on it hoping to knock a tenth or two off, but broke a u-joint and transmission at the NOF race. It works well for what I have in it. I don't want to say the distance is off at KRP, either distance or MPH, but most other tracks seem faster. I don't have personal data to back that up, however.
It's no secret you can run down to Hagerstown or MIR and pick up 3 tenths.
It's no secret you can run down to Hagerstown or MIR and pick up 3 tenths.
There is no way a full weight 98-02 fbody with full bolt ons is going to trap 120mph IMO. My trap speed is low by a couple mph. I’m looking for someone that is going to suggest better Da, a little higher numerical gear ratio, higher stall, or something else realistic. The one thing I don’t like is the rpm drop when I shift from 2nd to 3rd.
Now with that said most run a drag pak.....that alone means not full weight. Still running a egr? One typically loses weught with Headers and exhaust to. Converter or clutch same weight as stock???? If so one really eff'd up there.
Seems pretty easy to drop 100+ lb and still be full weight.....weird eehhh
For comparison I went 1.55 60', 11.64 at 115 this summer. Don't recall the DA but let's say 2000'. I think I have it posted elsewhere. This is a 99 Camaro with a 5.7, with an LS6 top end, intake and 243 heads. Summit cam, UD pulley, Hooker Blackheart TD, and a 4000 stall converter, Racestar rims. I was still tweaking on it hoping to knock a tenth or two off, but broke a u-joint and transmission at the NOF race. It works well for what I have in it. I don't want to say the distance is off at KRP, either distance or MPH, but most other tracks seem faster. I don't have personal data to back that up, however.
It's no secret you can run down to Hagerstown or MIR and pick up 3 tenths.
It's no secret you can run down to Hagerstown or MIR and pick up 3 tenths.
On The Tree
Joined: Aug 2010
Posts: 165
Likes: 4
From: Orange County
Data log and you may see the car is pulling timing as it goes down the track. I know my car was a blower car but the IAT's definitely increased on the big end. I was able to get a 3900 lb GTO that made 490 on a mustang dyno to trap 123 in 3000 ft DA. But it was only after data logging and making tuning adjustments based on the data.
Last edited by slogoat; Oct 3, 2019 at 09:56 PM.