suspension and ignition setup need help

marina blue · 08-12-2016, 05:30 PM

I run my 66 chevelle in a club racing event called supercar shootout. Stock tires, stock intake, stock exhaust manifolds. I'm running an msd digital 7 box with a stock eliminator style big block. Best run 11.22 @ 122mph. I know there's more in it and I'm looking for someone with the knowledge and talent to help me. I'm willing to meet at etown atco or cecil county and compensate anyone willing to help me pick the car up.

HandOverFist · 08-13-2016, 01:05 AM

Any suspension modifications allowed? I'm sure your 60' times could be improved upon. What type of rear tire are you calling "stock"?

marina blue · 08-13-2016, 09:33 AM

G70-14 redline. Best 60 ft 1.74. I'm pulling out 15 degrees of timing for 1.5 seconds leaving off the foot brake. I know the digital 7 is capable of much more than I'm using it for now. I have santhuff springs up front with del alum bushings and single adj. QA1s. In the rear UMI adj. uppers, boxed lowers stock springs and sway bar and double adj QA1s. I'm losing ground to some of the other racers who have figured out how to get high 1.5 to 1.6 60 fts.

GTOMayhem · 08-13-2016, 09:49 AM

There are a lot of folks on here that could help you, but I think they would all need quite a bit of info about your combo. 11.22 is pretty stout on redlines, and is at or below the index for your 66 with any engine except the aluminum head 396/375hp at 11.20.

Rick Thomason
GTOMayhem

marina blue · 08-13-2016, 10:03 AM

The class is run heads up with a sportsman ladder. .400 pro tree. My combo is a "stock appearing" 360hp automatic with a turbo 400 and 4.56s. The motor made 660 on the engine dyno running through the stock exhaust manifolds, correct oval port heads, and cast iron intake which uses a holley. The car weighs 3845 with me in it. The dominant cars are hemi mopars and L89 69 camaros and novas. I feel the front of the car works well but the rear is where I could use the expertise of someone else. As well as getting full use of the MSD.

Alan Roehrich · 08-13-2016, 10:30 AM

What do they allow on the rear suspension?

Woodfin · 08-13-2016, 11:04 AM

your performance is commendable giving the information posted.

If you can get to the point where it will leave without retarding time, that will be a big part of reaching your goal.

Have you tested with fixed timing? If not, try and see what happens.

HandOverFist · 08-13-2016, 12:49 PM

Agreed - Without a tire swap the only other thing I can think of as far as suspension are no-hop brackets...https://www.summitracing.com/parts/qa1-5213/overview/

These were used on my partner's '66 with success for a 1.51 60'...he had less hp and was closer to 4000 pounds, but did use slicks for those runs. Unsure with those tires what the outcome of a higher stall converter would net.

Is this you at the 2:19 minute mark?

HandOverFist · 08-13-2016, 01:41 PM

Quote:

Originally Posted by Alan Roehrich

What do they allow on the rear suspension?

http://www.supercarraces.com/2010rules.html

Alan Roehrich · 08-13-2016, 01:49 PM

Quote:

Originally Posted by HandOverFist

http://www.supercarraces.com/2010rules.html

According to those rules, his upper arms are not legal.

13.01 Traction devices are limited to hop stop bars for upper control arms on coil spring cars.
13.02 Upper and lower control arms on coil spring cars must be correct.

From his OP: In the rear UMI adj. uppers, boxed lowers stock springs and sway bar and double adj QA1s.

So, evidently, the rules have changed.

08-12-2016, 05:30 PM	#1
marina blue Junior Member Join Date: Aug 2016 Posts: 7 Likes: 0 Liked 0 Times in 0 Posts	suspension and ignition setup need help I run my 66 chevelle in a club racing event called supercar shootout. Stock tires, stock intake, stock exhaust manifolds. I'm running an msd digital 7 box with a stock eliminator style big block. Best run 11.22 @ 122mph. I know there's more in it and I'm looking for someone with the knowledge and talent to help me. I'm willing to meet at etown atco or cecil county and compensate anyone willing to help me pick the car up.

08-13-2016, 01:05 AM	#2
HandOverFist VIP Member Join Date: Oct 2013 Location: Gulf Breeze, FL Posts: 1,655 Likes: 8 Liked 33 Times in 16 Posts	Re: suspension and ignition setup need help Any suspension modifications allowed? I'm sure your 60' times could be improved upon. What type of rear tire are you calling "stock"? __________________ Rich Taylor I/SA - 321

08-13-2016, 09:33 AM	#3
marina blue Junior Member Join Date: Aug 2016 Posts: 7 Likes: 0 Liked 0 Times in 0 Posts	Re: suspension and ignition setup need help G70-14 redline. Best 60 ft 1.74. I'm pulling out 15 degrees of timing for 1.5 seconds leaving off the foot brake. I know the digital 7 is capable of much more than I'm using it for now. I have santhuff springs up front with del alum bushings and single adj. QA1s. In the rear UMI adj. uppers, boxed lowers stock springs and sway bar and double adj QA1s. I'm losing ground to some of the other racers who have figured out how to get high 1.5 to 1.6 60 fts.

08-13-2016, 09:49 AM	#4
GTOMayhem Member Join Date: Oct 2014 Posts: 172 Likes: 669 Liked 22 Times in 14 Posts	Re: suspension and ignition setup need help There are a lot of folks on here that could help you, but I think they would all need quite a bit of info about your combo. 11.22 is pretty stout on redlines, and is at or below the index for your 66 with any engine except the aluminum head 396/375hp at 11.20. Rick Thomason GTOMayhem

08-13-2016, 10:03 AM	#5
marina blue Junior Member Join Date: Aug 2016 Posts: 7 Likes: 0 Liked 0 Times in 0 Posts	Re: suspension and ignition setup need help The class is run heads up with a sportsman ladder. .400 pro tree. My combo is a "stock appearing" 360hp automatic with a turbo 400 and 4.56s. The motor made 660 on the engine dyno running through the stock exhaust manifolds, correct oval port heads, and cast iron intake which uses a holley. The car weighs 3845 with me in it. The dominant cars are hemi mopars and L89 69 camaros and novas. I feel the front of the car works well but the rear is where I could use the expertise of someone else. As well as getting full use of the MSD.

08-13-2016, 10:30 AM	#6
Alan Roehrich VIP Member Join Date: May 2006 Location: Murfreesboro TN Posts: 4,914 Likes: 995 Liked 1,042 Times in 274 Posts	Re: suspension and ignition setup need help What do they allow on the rear suspension? __________________ Alan Roehrich 212A G/S

08-13-2016, 11:04 AM	#7
Woodfin Member Join Date: Sep 2006 Location: Kilgore TX Posts: 428 Likes: 5 Liked 70 Times in 38 Posts	Re: suspension and ignition setup need help your performance is commendable giving the information posted. If you can get to the point where it will leave without retarding time, that will be a big part of reaching your goal. Have you tested with fixed timing? If not, try and see what happens.

08-13-2016, 12:49 PM	#8
HandOverFist VIP Member Join Date: Oct 2013 Location: Gulf Breeze, FL Posts: 1,655 Likes: 8 Liked 33 Times in 16 Posts	Re: suspension and ignition setup need help Agreed - Without a tire swap the only other thing I can think of as far as suspension are no-hop brackets...https://www.summitracing.com/parts/qa1-5213/overview/ These were used on my partner's '66 with success for a 1.51 60'...he had less hp and was closer to 4000 pounds, but did use slicks for those runs. Unsure with those tires what the outcome of a higher stall converter would net. Is this you at the 2:19 minute mark? __________________ Rich Taylor I/SA - 321 Last edited by HandOverFist; 08-13-2016 at 01:26 PM.