Chassis tuning for 325 Drag Radials?
09-08-2007, 06:21 PM
#42
TECH Enthusiast
Join Date: May 2007
Posts: 538
Likes: 0
Received 0 Likes
on
0 Posts
If you can manage it and the car keeps hooking keep cranking up the boost. I think you will have to leave 12-15 psi but try to get in that zone at around 4400. That should get the car moving and up on the power. If it blows the tires off keep working the chassis.
If you want those elusive 8.xx slips your gonna have to muster a 1.30-1.28 short time. To do that you will need lots of power out of the hole. A drag radial can do it. Especially the big dog 325 60 15. That tires has been low 7's in a mustang.
How much Anti squat do you have in the rear suspension and where is the ride hieght at ? Also what TQ arm are you running ? Do you have an Anti Roll bar ? what rear springs are you running ?
these are questions That need answering !
If you hit a road block you know how to get in touch. I can arrange for the hookmaster to get out to the track with ya. He ain't cheap but he can make it go.
If you want those elusive 8.xx slips your gonna have to muster a 1.30-1.28 short time. To do that you will need lots of power out of the hole. A drag radial can do it. Especially the big dog 325 60 15. That tires has been low 7's in a mustang.
How much Anti squat do you have in the rear suspension and where is the ride hieght at ? Also what TQ arm are you running ? Do you have an Anti Roll bar ? what rear springs are you running ?
these are questions That need answering !
If you hit a road block you know how to get in touch. I can arrange for the hookmaster to get out to the track with ya. He ain't cheap but he can make it go.
Originally Posted by Pro Stock John
I have my 2 step at like 3600-3800, the car seems maybe 10psi, so I think it will leave okay, I don't think it will go on the bumper.
09-10-2007, 04:31 PM
#43
LS1Tech Co-Founder
Thread Starter
iTrader: (34)
I have the car as long as I can get it with 325's or 28W's back without minitubbing.
I am thinking the car will need to leave real hard to run a 1.2x.
I am running an Alston tunnel mount torque arm.
I am running a Spohn rear drag bar, the beefier one.
I am running stock 1999 rear springs.
I am thinking the car will need to leave real hard to run a 1.2x.
I am running an Alston tunnel mount torque arm.
I am running a Spohn rear drag bar, the beefier one.
I am running stock 1999 rear springs.
09-10-2007, 04:31 PM
#44
LS1Tech Co-Founder
Thread Starter
iTrader: (34)
I'm thinking I will try 3600 on the 2 step, and then if it hooks good, keep upping it. I'm thinking that I might baseline the combo at 15psi and work from there. I'm guessing that's like 700rwhp for me.
09-10-2007, 05:33 PM
#45
TECH Enthusiast
Join Date: May 2007
Posts: 538
Likes: 0
Received 0 Likes
on
0 Posts
The alston TQ arm may not cut it. I have seen sevral of them fail repeatdly. I would put that on the top of my replace list.
Toss the drag bar get a Wolf atiroll Bar kit. Far superior. teh drag bar is ok in a 10 second ride not an 8 second ride.
Stock springs is good !
What shock and how many clicks ?
You should probolay touch base with me off board.
Toss the drag bar get a Wolf atiroll Bar kit. Far superior. teh drag bar is ok in a 10 second ride not an 8 second ride.
Stock springs is good !
What shock and how many clicks ?
You should probolay touch base with me off board.
Originally Posted by Pro Stock John
I have the car as long as I can get it with 325's or 28W's back without minitubbing.
I am thinking the car will need to leave real hard to run a 1.2x.
I am running an Alston tunnel mount torque arm.
I am running a Spohn rear drag bar, the beefier one.
I am running stock 1999 rear springs.
I am thinking the car will need to leave real hard to run a 1.2x.
I am running an Alston tunnel mount torque arm.
I am running a Spohn rear drag bar, the beefier one.
I am running stock 1999 rear springs.
09-10-2007, 08:10 PM
#47
TECH Enthusiast
Join Date: May 2007
Posts: 538
Likes: 0
Received 0 Likes
on
0 Posts
Put up some video of the car leaving. would help a bunch.
Originally Posted by Pro Stock John
I'm thinking I will try 3600 on the 2 step, and then if it hooks good, keep upping it. I'm thinking that I might baseline the combo at 15psi and work from there. I'm guessing that's like 700rwhp for me.
09-10-2007, 10:25 PM
#48
Coal Mining Director
iTrader: (17)
Join Date: Nov 2001
Location: Virginia
Posts: 4,442
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by LS1curious
Put up some video of the car leaving. would help a bunch.
09-10-2007, 10:45 PM
#49
Originally Posted by kp
IMO the 325s could really use wider then a 10" wheel also.
Originally Posted by onfire
09-11-2007, 10:17 AM
#50
TECH Enthusiast
Join Date: May 2007
Posts: 538
Likes: 0
Received 0 Likes
on
0 Posts
I don't think PSJ has enough turbo for that to be an issue.
Originally Posted by onfire
09-11-2007, 10:19 AM
#51
TECH Enthusiast
Join Date: May 2007
Posts: 538
Likes: 0
Received 0 Likes
on
0 Posts
I agree the ohio boys have definately got it going on. I did not get out to milan to see them run but after watching the video and hearing first hand accounts it seems like they have really got that chassis and engine combo working etxremly well. IMO great work on the part of that shop and the crew running the car. It's not really easy to make a stock suspension F-car go down the track as well as they have got that car working.
the most amazing part about that car seems to be that it's getting more and more consistent. Truly the mark of a good working car and crew.
the most amazing part about that car seems to be that it's getting more and more consistent. Truly the mark of a good working car and crew.
Originally Posted by Beaflag VonRathburg
I agree. I know a lot of people are running the 15x10s and having good results, but with a tire that wide it just seems like a good idea to have a 15x12. I was talking to CAMN HAWK a while ago about it and he helped me out a lot with figuring out how to cram the 15x12s under there. I'm going to start with the 15x10s and then when I can afford the rest of the parts to mini tub I'll be switching over to the 15x12s.
Yeah, really! They just set the new record and they're running 315/60/15s to boot.
Yeah, really! They just set the new record and they're running 315/60/15s to boot.
09-11-2007, 02:39 PM
#52
Originally Posted by LS1curious
I agree the ohio boys have definately got it going on. I did not get out to milan to see them run but after watching the video and hearing first hand accounts it seems like they have really got that chassis and engine combo working etxremly well. IMO great work on the part of that shop and the crew running the car. It's not really easy to make a stock suspension F-car go down the track as well as they have got that car working.
the most amazing part about that car seems to be that it's getting more and more consistent. Truly the mark of a good working car and crew.
the most amazing part about that car seems to be that it's getting more and more consistent. Truly the mark of a good working car and crew.
09-13-2007, 09:42 AM
#54
LS1Tech Co-Founder
Thread Starter
iTrader: (34)
Madman, thanks for the time on the phone yesterday, I went 1.35 on the 325 DR's. I did about 90% of what you suggested, I was not building boost like you were reccomending but we were worried about having some small problems so we'll do that next time.
09-13-2007, 08:17 PM
#58
TECH Enthusiast
Join Date: May 2007
Posts: 538
Likes: 0
Received 0 Likes
on
0 Posts
It looks like its leaving fiarly well. You need more power and most likely a few more PSI of tire pressure. what are you running for air pressure now ?I heard the turbo spooling up and down. Are you having a boost managment issue ?
Put some rim screws in your tires. thats most likely the cuase of you tire shake. either that or get some bead locking wheels. Had a similar issue on a another car not long ago.
Put some rim screws in your tires. thats most likely the cuase of you tire shake. either that or get some bead locking wheels. Had a similar issue on a another car not long ago.
Originally Posted by Pro Stock John
09-13-2007, 10:22 PM
#60
11 Second Club
iTrader: (33)
Join Date: Apr 2006
Location: Chicago Area
Posts: 1,008
Likes: 0
Received 0 Likes
on
0 Posts
Hey John,
I may be able to fix these vids so they are in the right screen size. I'll see what I can do so that you don't look like Lightning Mcqueen anymore.
Car looks great in person, by the way...
I may be able to fix these vids so they are in the right screen size. I'll see what I can do so that you don't look like Lightning Mcqueen anymore.
Car looks great in person, by the way...