1963 - 1979 Vette four link install. - Page 2

sst7250 · 02-22-2023, 02:38 PM

FWIW we have chosen to stick with ladder bars in the gen 3 we run heads up stuff with. Car has been 1.08 60' NA with a 29.5x10.5 slick.

SSDiv6 · 02-22-2023, 03:31 PM

Build a 1978-1980 Malibu just like the SRD-built car raced by Larry Kopp.

Woodfin · 02-22-2023, 07:23 PM

SS d6. I like your comment about the G body. I know from experience those are good packages.

Woodfin · 02-22-2023, 07:26 PM

SST 7250, I like your comment about a ladder bar. I know from experience they work very well. My reason for asking about a four link in the Vette was because of the limited space available. It is a non-issue because I have scratched the Vette idea.

4543 · 02-22-2023, 09:16 PM

Larry, How much tire do you need? My 71 H/SA has gone 1.36 on a 9” Hoosier. My 12 bolt is one of the first conversions done when NHRA began allowing them in stock. Nothing fancy, no 4-link. I know before it got crazy with some of the setups allowed in stock others were doing the same thing and making them work. Mike McMahan 2543 H/SA

Woodfin · 02-22-2023, 09:43 PM

Mike, it will need to run 5.90's - 6.0's in the 1/8th at around 2900 pounds with driver. Thus, around 725 horsepower. The tire size is not so much an issue as the rear assembly strength at that performance. I think a 30 x 12 tire would be plenty. And remember this is a manual trans deal.

I realize this post is all over the place, but I have found 1975 Vette 10 miles from my shop that will check out tomorrow.

Someone mentioned cutting the rear floor out of the body. Have you seen that done?

Ernie Neal · 02-22-2023, 10:36 PM

[QUOTE=Someone mentioned cutting the rear floor out of the body. Have you seen that done?[/QUOTE]

Larry, I have cut up a C4

http://classracer.com/classforum/sho...light=corvette

Ernie Neal
SS354

Woodfin · 02-22-2023, 11:25 PM

Ernie, I had forgot about that project, thank you for the link. Tomorrow I am looking at 75 model for possible project.

Woodfin · 02-22-2023, 11:31 PM

This "may be" the engine and power level. A 408 LS engine [4.030 bore x 4.0 stroke] Fully worked LS3 heads, methanol carb, around 725 horsepower with upper RPM level of around 7500. With the proper clutch setup will a 12 bolt hold up?

Woodfin · 02-22-2023, 11:40 PM

Ernie, where did you get the four link forward frame bracket?

02-22-2023, 02:38 PM	#11
sst7250 Member Join Date: Jan 2009 Location: Las Vegas, NV Posts: 184 Likes: 9 Liked 45 Times in 32 Posts	Re: 1963 - 1979 Vette four link install. FWIW we have chosen to stick with ladder bars in the gen 3 we run heads up stuff with. Car has been 1.08 60' NA with a 29.5x10.5 slick.

02-22-2023, 03:31 PM	#12
SSDiv6 VIP Member Join Date: Feb 2003 Location: Glendale, Arizona Posts: 3,023 Likes: 706 Liked 1,514 Times in 563 Posts	Re: 1963 - 1979 Vette four link install. Build a 1978-1980 Malibu just like the SRD-built car raced by Larry Kopp.

02-22-2023, 07:23 PM	#13
Woodfin Senior Member Join Date: Sep 2006 Location: Kilgore TX Posts: 512 Likes: 8 Liked 213 Times in 88 Posts	Re: 1963 - 1979 Vette four link install. SS d6. I like your comment about the G body. I know from experience those are good packages.

02-22-2023, 07:26 PM	#14
Woodfin Senior Member Join Date: Sep 2006 Location: Kilgore TX Posts: 512 Likes: 8 Liked 213 Times in 88 Posts	Re: 1963 - 1979 Vette four link install. SST 7250, I like your comment about a ladder bar. I know from experience they work very well. My reason for asking about a four link in the Vette was because of the limited space available. It is a non-issue because I have scratched the Vette idea.

02-22-2023, 09:16 PM	#15
4543 Senior Member Join Date: Apr 2005 Location: Texas Posts: 636 Likes: 56 Liked 622 Times in 137 Posts	Re: 1963 - 1979 Vette four link install. Larry, How much tire do you need? My 71 H/SA has gone 1.36 on a 9” Hoosier. My 12 bolt is one of the first conversions done when NHRA began allowing them in stock. Nothing fancy, no 4-link. I know before it got crazy with some of the setups allowed in stock others were doing the same thing and making them work. Mike McMahan 2543 H/SA

02-22-2023, 09:43 PM	#16
Woodfin Senior Member Join Date: Sep 2006 Location: Kilgore TX Posts: 512 Likes: 8 Liked 213 Times in 88 Posts	Re: 1963 - 1979 Vette four link install. Mike, it will need to run 5.90's - 6.0's in the 1/8th at around 2900 pounds with driver. Thus, around 725 horsepower. The tire size is not so much an issue as the rear assembly strength at that performance. I think a 30 x 12 tire would be plenty. And remember this is a manual trans deal. I realize this post is all over the place, but I have found 1975 Vette 10 miles from my shop that will check out tomorrow. Someone mentioned cutting the rear floor out of the body. Have you seen that done?

02-22-2023, 10:36 PM	#17
Ernie Neal Senior Member Join Date: Feb 2009 Location: Columbus, Indiana Posts: 522 Likes: 160 Liked 305 Times in 74 Posts	Re: 1963 - 1979 Vette four link install. [QUOTE=Someone mentioned cutting the rear floor out of the body. Have you seen that done?[/QUOTE] Larry, I have cut up a C4 http://classracer.com/classforum/sho...light=corvette Ernie Neal SS354

02-22-2023, 11:25 PM	#18
Woodfin Senior Member Join Date: Sep 2006 Location: Kilgore TX Posts: 512 Likes: 8 Liked 213 Times in 88 Posts	Re: 1963 - 1979 Vette four link install. Ernie, I had forgot about that project, thank you for the link. Tomorrow I am looking at 75 model for possible project.

02-22-2023, 11:31 PM	#19
Woodfin Senior Member Join Date: Sep 2006 Location: Kilgore TX Posts: 512 Likes: 8 Liked 213 Times in 88 Posts	Re: 1963 - 1979 Vette four link install. This "may be" the engine and power level. A 408 LS engine [4.030 bore x 4.0 stroke] Fully worked LS3 heads, methanol carb, around 725 horsepower with upper RPM level of around 7500. With the proper clutch setup will a 12 bolt hold up?

02-22-2023, 11:40 PM	#20
Woodfin Senior Member Join Date: Sep 2006 Location: Kilgore TX Posts: 512 Likes: 8 Liked 213 Times in 88 Posts	Re: 1963 - 1979 Vette four link install. Ernie, where did you get the four link forward frame bracket?