Chassis Tuning Help

68CHARGER · 06-03-2014, 12:17 PM

My 68 charger has issues hooking with transbrake, foot brake it hooks fine with a 1.50 60ft . The car weighs 3350 with driver. 440 ci, 688hp,620 Ftlbs, 5000 stall,4.56 gear, 727. Any thoughts of what is happening. In the video I launch at 3600. The ladder bars are parallel with the ground. I have single adj qa1 in the rear set on 2 clicks from full soft and dbl adjustables Qa1 in the front set on 2 clicks rebound, 10 clicks comp. I haven't tried tightening up rear shocks yet. I would like to here some opinions thanks. [ame]http://m.youtube.com/watch?v=WBGRDKZsQsw[/ame]

68CHARGER · 06-03-2014, 04:38 PM

Here's another vid in 500fps. [ame]http://m.youtube.com/watch?v=hNgRpwuaOHU[/ame]

HandOverFist · 06-04-2014, 01:33 AM

Looks like it's bouncing to me.

Larry Hill · 06-04-2014, 06:47 AM

Make sure the rear shocks are long enough in extension so they don't lift the wheels at full rise.

jmcarter · 06-04-2014, 07:29 AM

What Larry said, plus I'd be curious if you've moved the front Ladder Bar pivot point downward and tried that. Moving the CG forward might help transfer the weight better. With that much power you should be in the 1:30's sixty foot.

MAURICE BLENDHEIM · 06-04-2014, 09:57 AM

68…Looks like Saskatoon and you've got Bernie watching over you. Are your 60's consistent with the footbrake? Do you know the weight bias of your car? MB.

06-03-2014, 12:17 PM	#1
68CHARGER Junior Member Join Date: Apr 2014 Posts: 5 Likes: 0 Liked 0 Times in 0 Posts	Chassis Tuning Help My 68 charger has issues hooking with transbrake, foot brake it hooks fine with a 1.50 60ft . The car weighs 3350 with driver. 440 ci, 688hp,620 Ftlbs, 5000 stall,4.56 gear, 727. Any thoughts of what is happening. In the video I launch at 3600. The ladder bars are parallel with the ground. I have single adj qa1 in the rear set on 2 clicks from full soft and dbl adjustables Qa1 in the front set on 2 clicks rebound, 10 clicks comp. I haven't tried tightening up rear shocks yet. I would like to here some opinions thanks. [ame]http://m.youtube.com/watch?v=WBGRDKZsQsw[/ame]

06-03-2014, 04:38 PM	#2
68CHARGER Junior Member Join Date: Apr 2014 Posts: 5 Likes: 0 Liked 0 Times in 0 Posts	Re: Chassis Tuning Help Here's another vid in 500fps. [ame]http://m.youtube.com/watch?v=hNgRpwuaOHU[/ame]

06-04-2014, 01:33 AM	#3
HandOverFist VIP Member Join Date: Oct 2013 Location: Gulf Breeze, FL Posts: 1,651 Likes: 8 Liked 33 Times in 16 Posts	Re: Chassis Tuning Help Looks like it's bouncing to me. __________________ Rich Taylor I/SA - 321

06-04-2014, 06:47 AM	#4
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,651 Likes: 1,943 Liked 10,779 Times in 2,240 Posts	Re: Chassis Tuning Help Make sure the rear shocks are long enough in extension so they don't lift the wheels at full rise. __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817

06-04-2014, 07:29 AM	#5
jmcarter VIP Member Join Date: Dec 2008 Location: Richmond Hill GA (and Port Ludlow WA) Posts: 4,301 Likes: 2,397 Liked 3,197 Times in 977 Posts	Re: Chassis Tuning Help What Larry said, plus I'd be curious if you've moved the front Ladder Bar pivot point downward and tried that. Moving the CG forward might help transfer the weight better. With that much power you should be in the 1:30's sixty foot. __________________ Jim Carter 2340 Super Stock 2340 SST/2340 Stock Set another place at the table

06-04-2014, 09:57 AM	#6
MAURICE BLENDHEIM Senior Member Join Date: Jun 2011 Location: Langley (no igloos), British Columbia, Canada Posts: 569 Likes: 311 Liked 284 Times in 87 Posts	Re: Chassis Tuning Help 68…Looks like Saskatoon and you've got Bernie watching over you. Are your 60's consistent with the footbrake? Do you know the weight bias of your car? MB.