1970 GTO Version 2.0

[andrewb70]

andrew, i love all of your detailed posts. any chance that you've weighed your wheels when you've had them off of the car?

I weighed the wheels when I first got them. The rear 18x10.5" are about 22 pounds.



Andrew

[Conekiller13]

Andrew, the other option is to go to a conventional coil over in the front. That's what I'm doing. I'll be integrating the upper mounts into a roll cage (at least that's the plan) but I was looking at Tyler's upper mounts for the Camaros and while a little tall, I think they could be made to work. With a conventional coil over You pick up a couple different rates for the price of one set of high rate regular coils. One of the reasons I've stayed away from the bolt on coil overs is lack of spring choice. The conventional could give You more travel allowing for a nicer ride too. I'm surprised You have so little caster available. On My car with Global West uppers I was at about +6.5 caster on each side at about -3.1 static camber. With those adjustable uppers do You know what the geometry works out to, specificaly camber curve vs. a fixed length control arm with a specific designed curve?

Oh.........yea. The new brakes are freakin' awesome. The pricing seems unbelievable compared to other systems of that size.

[andrewb70]

Andrew, the other option is to go to a conventional coil over in the front. That's what I'm doing. I'll be integrating the upper mounts into a roll cage (at least that's the plan) but I was looking at Tyler's upper mounts for the Camaros and while a little tall, I think they could be made to work. With a conventional coil over You pick up a couple different rates for the price of one set of high rate regular coils. One of the reasons I've stayed away from the bolt on coil overs is lack of spring choice. The conventional could give You more travel allowing for a nicer ride too. I'm surprised You have so little caster available. On My car with Global West uppers I was at about +6.5 caster on each side at about -3.1 static camber. With those adjustable uppers do You know what the geometry works out to, specificaly camber curve vs. a fixed length control arm with a specific designed curve?

Oh.........yea. The new brakes are freakin' awesome. The pricing seems unbelievable compared to other systems of that size.

Daniel,

When I had the car aligned we could have dialed in more caster. I just didn't see any need for it. We could have also easily added more camber. I actually have a set of shims that I install when autocrossing that increases the camber to about -2.5 degrees and also bumps the caster another .5 degrees, or so.

I haven't done any camber curve analysis with these control arms, but I bet Tyler at ATS, or Marcus at SC&C have. Maybe one of them will chime in and give us some answers.

Andrew

[Conekiller13]

Daniel,


I haven't done any camber curve analysis with these control arms, but I bet Tyler at ATS, or Marcus at SC&C have. Maybe one of them will chime in and give us some answers.

Andrew

That would be cool. Did the ATS spindles not work with GW arms? I got the impression from earlier posts You were unable to get enough caster with those hence the change to the new arms.

[andrewb70]

That would be cool. Did the ATS spindles not work with GW arms? I got the impression from earlier posts You were unable to get enough caster with those hence the change to the new arms.

The ATS spindles didn't work with the Global West arms that I had. GW does make arms that will work with the ATS spindles, but they are different than the arms that I had for the b-body spindle swap. It has something to do with the king pin inclination angle.

The arms that I got were inexpensive, offered easy alignment adjustment, 2 alignment setting, and worked with the ATS spindles. It was a no brainer for me.

Andrew

[Conekiller13]

Makes sense. I suppose that means My arms wouldn't work either since they are as old as Yours. I'm just still not hip on the whole adjustable lenght of the arm bit. Oh well I'm a ways off finacially of upgradding that area anyway .............wheres that damn lottery ticket?

[andrewb70]

Makes sense. I suppose that means My arms wouldn't work either since they are as old as Yours. I'm just still not hip on the whole adjustable lenght of the arm bit. Oh well I'm a ways off finacially of upgradding that area anyway .............wheres that damn lottery ticket?

I suspect that your GW arms would not work either. What is it that bothers you about the adjustable control arms?

I took the car to the track this Saturday. The weather was awesome. Clear skies, dry, and high 60s. I only made 3 passes because my time was limited and there were a ton of people at the track. All passes were made without fooling around with tire pressure or shock settings. Drove it right off the street, into the staging lanes. My first pass netted the best MPH to date; 112.31 MPH. The second pass netted a my best ET to date:

60' 2.064
1/4 12.602
MPH 110.97

This is my last trip to the track for this year and I am very pleased.

Andrew