"G" Body suspention tips ?

CJohnson · 07-28-2009, 09:10 PM

Hey there, I have a 1984 cutlass that I am slowly turning into a stock eliminator but right now its just a 13 second bracket car with a 355.

I just recently swapped out my 7.5" ten bolt 3.73 posi, for a 12 bolt 4.88 posi and i am running 30x9 goodyear radials with the steeper gear. to make these tires fit I had to run cargo coils in the rear does anyone know if these work well for weight transfer in these cars ?

I'm also using the stock upper control arms (The pinion angle is way off and i am getting major shutter off the starting line)

I ran my car at the National open last weekend for the first time with the 12 bolt and like i said i was getting big time shutter off the launch, and also my 60's were all over the place from a 1.956 to a 1.880 and it felt like it was hooking up every pass
Will a set of adjustable upper control arms fix the in consistancy off the line ? and is there any other tips to get "G" bodies leaving the starting line better ?

Thanks,
Craig - C693

skooter · 07-28-2009, 09:45 PM

Maliburacing.com

CJohnson · 07-28-2009, 11:58 PM

Thanks "skooter" .. alot of interesting info on the forums.

rallye bob · 07-29-2009, 04:52 AM

realoldspower.com

Bob Gullett · 07-29-2009, 08:17 AM

http://www.hrpartsandstuff.com/

Brian Fink · 07-29-2009, 08:21 AM

You need to start fresh with coil springs both front and rear ( Moroso will work ). Shocks need to be race specific and in this case a call to Calvert should give you what you need . Any of the major control arm companies will also get you in the ballpark along with a one degree pinion angle ( to start ). Also, as Alf Wiebe will tell you , use a rear sway bar !

chris ok · 07-29-2009, 08:31 AM

sounds like binding of upper control arms. stock uppers and old 12 bolts cause binding due to angularity differences. need the uppers changed to rid yourself of this problem to start.

Bob Gullett · 07-29-2009, 08:43 AM

I guess the question is, is the 12 bolt modified to fit the G-body? Are the upper ears located in the proper angle to the upper control arms? If it was an "A" body 12 bolt, the upper control arm attachments are not in the proper location. You probably can force the control arms to fit but it will seriously bind. Post a little more info on the 12 bolt install.

skooter · 07-29-2009, 11:01 AM

They make the control arms to put the "A" body rear in the "G" body, with the correct angles.
Can't remember who, maybe the "Iceman", I think there's a product line under that name, think he even sold/sells on Ebay.

BlueOval Ralph · 07-29-2009, 11:45 AM

There was also a 12 Bolt made for the G-body. Oldsmobile had it done and was given out to the factory cars. Just like the non computer q-jet & Dist. There were parts from Canada.
Ralph

QUOTE=skooter;132274]They make the control arms to put the "A" body rear in the "G" body, with the correct angles.
Can't remember who, maybe the "Iceman", I think there's a product line under that name, think he even sold/sells on Ebay.[/QUOTE]

07-28-2009, 09:10 PM	#1
CJohnson Junior Member Join Date: Jul 2009 Location: .005 ahead of you Posts: 38 Likes: 0 Liked 0 Times in 0 Posts	"G" Body suspention tips ? Hey there, I have a 1984 cutlass that I am slowly turning into a stock eliminator but right now its just a 13 second bracket car with a 355. I just recently swapped out my 7.5" ten bolt 3.73 posi, for a 12 bolt 4.88 posi and i am running 30x9 goodyear radials with the steeper gear. to make these tires fit I had to run cargo coils in the rear does anyone know if these work well for weight transfer in these cars ? I'm also using the stock upper control arms (The pinion angle is way off and i am getting major shutter off the starting line) I ran my car at the National open last weekend for the first time with the 12 bolt and like i said i was getting big time shutter off the launch, and also my 60's were all over the place from a 1.956 to a 1.880 and it felt like it was hooking up every pass Will a set of adjustable upper control arms fix the in consistancy off the line ? and is there any other tips to get "G" bodies leaving the starting line better ? Thanks, Craig - C693

07-28-2009, 09:45 PM	#2
skooter Junior Member Join Date: Dec 2002 Posts: 33 Likes: 0 Liked 0 Times in 0 Posts	Re: "G" Body suspention tips ? Maliburacing.com

07-28-2009, 11:58 PM	#3
CJohnson Junior Member Join Date: Jul 2009 Location: .005 ahead of you Posts: 38 Likes: 0 Liked 0 Times in 0 Posts	Re: "G" Body suspention tips ? Thanks "skooter" .. alot of interesting info on the forums.

07-29-2009, 04:52 AM	#4
rallye bob Member Join Date: Sep 2006 Location: Genoa, Illinois Posts: 489 Likes: 9 Liked 6 Times in 4 Posts	Re: "G" Body suspention tips ? realoldspower.com

07-29-2009, 08:17 AM	#5
Bob Gullett VIP Member Join Date: Mar 2002 Posts: 1,105 Likes: 57 Liked 495 Times in 115 Posts	Re: "G" Body suspention tips ? http://www.hrpartsandstuff.com/ __________________ 68 Chevy11 327 F/S

07-29-2009, 08:21 AM	#6
Brian Fink Member Join Date: Jul 2007 Posts: 173 Likes: 39 Liked 28 Times in 9 Posts	Re: "G" Body suspention tips ? You need to start fresh with coil springs both front and rear ( Moroso will work ). Shocks need to be race specific and in this case a call to Calvert should give you what you need . Any of the major control arm companies will also get you in the ballpark along with a one degree pinion angle ( to start ). Also, as Alf Wiebe will tell you , use a rear sway bar !

07-29-2009, 08:31 AM	#7
chris ok Senior Member Join Date: Jul 2002 Location: Long Island, New york Posts: 592 Likes: 131 Liked 46 Times in 29 Posts	Re: "G" Body suspention tips ? sounds like binding of upper control arms. stock uppers and old 12 bolts cause binding due to angularity differences. need the uppers changed to rid yourself of this problem to start.

07-29-2009, 08:43 AM	#8
Bob Gullett VIP Member Join Date: Mar 2002 Posts: 1,105 Likes: 57 Liked 495 Times in 115 Posts	Re: "G" Body suspention tips ? I guess the question is, is the 12 bolt modified to fit the G-body? Are the upper ears located in the proper angle to the upper control arms? If it was an "A" body 12 bolt, the upper control arm attachments are not in the proper location. You probably can force the control arms to fit but it will seriously bind. Post a little more info on the 12 bolt install. __________________ 68 Chevy11 327 F/S

07-29-2009, 11:01 AM	#9
skooter Junior Member Join Date: Dec 2002 Posts: 33 Likes: 0 Liked 0 Times in 0 Posts	Re: "G" Body suspention tips ? They make the control arms to put the "A" body rear in the "G" body, with the correct angles. Can't remember who, maybe the "Iceman", I think there's a product line under that name, think he even sold/sells on Ebay.

07-29-2009, 11:45 AM	#10
BlueOval Ralph Banned Join Date: Feb 2008 Posts: 852 Likes: 0 Liked 0 Times in 0 Posts	Re: "G" Body suspention tips ? There was also a 12 Bolt made for the G-body. Oldsmobile had it done and was given out to the factory cars. Just like the non computer q-jet & Dist. There were parts from Canada. Ralph QUOTE=skooter;132274]They make the control arms to put the "A" body rear in the "G" body, with the correct angles. Can't remember who, maybe the "Iceman", I think there's a product line under that name, think he even sold/sells on Ebay.[/QUOTE]