Have questions about C4 Corvette suspensions for your Tri5? Ask them here!

[Rick_L]

For anyone who cares to read it, Herb Adams' book "Chassis Engineering" discusses the C2/C3 IRS deficiencies and why the C4 design is better.

[NickP]

[oceangoer]

Chevynut, or Rick_L

Either one of you have the distance from the Rear axle C/L to the Dog bones ?

And, We measured the rear dog bone mounting bracket to C4 frame at 24 degree to Plumb, any comments ?



Michael.

[NickP]

I'm neither but by GM drawing, .77" but I'd ask CNUT

[chevynut]

OG, I'm not understanding what you're looking for. Nick says the inboard halfshaft yoke center is .77" forward of the axle centerline and as far as I know that's correct. I thought it was 3/4" to 1" but have never actually measured it but he has.

I don't know what the 24 degrees you're referring to is all about. The distance between the front dogbone pivots is 4.15" for the late suspensions, a bit less for the earlier ones. I have both brackets and could measure the early one if that matters. I put all of mine at 4.15".

[NickP]

Chevynut, or Rick_L

Either one of you have the distance from the Rear axle C/L to the Dog bones ?

And, We measured the rear dog bone mounting bracket to C4 frame at 24 degree to Plumb, any comments ?



Michael.

Mathematically, it's 21.93° but that's per GM dimensions and a car that is perfectly level in all planes.

[oceangoer]

Chevynut, thanks

Rich, thank you !! looks like we were close. I did finally find the suspension measurements that I misplaced.

We're about to finish the frame rails drawing and get the rails bent soon, The Dog Bone mounting brackets will be mounted on the frame rail rail Kick Up over a 3/8 inch steel plate.

Appreciate the assistance !

Michael.

[NickP]

Chevynut, thanks

Rich, thank you !! looks like we were close. I did finally find the suspension measurements that I misplaced.

We're about to finish the frame rails drawing and get the rails bent soon, The Dog Bone mounting brackets will be mounted on the frame rail rail Kick Up over a 3/8 inch steel plate.

Appreciate the assistance !

Michael.

PM sent

[55 Rescue Dog]

I have been doing C4 conversions on Tri5 cars for over 10 years now. I am a mechanical engineer by profession, and have gained a lot of experience with both early ('84-87) and late ('88-96) C4 Corvette suspensions. My own '56 Nomad has the first conversion I designed and built.

If you have any questions about these awesome suspension conversions, what they entail, how they benefit you, any issues involved, or to help you make a choice between the early or late suspensions, or Dana 44 or 36 rears, please post them here. I'll answer them the best I can.

22 years into the design with zero miles to back it up. I'm just looking at the best solutions to make it better.

[NickP]

22 years into the design with zero miles to back it up. I'm just looking at the best solutions to make it better.

RD, is there a point to your childish banter? At first, I thought you wanted to, well, as you put it learn something but the obvious is that you along with a few others have an axe to grind. For what reason, God only knows. For that, I continue to pray for healing for you. For the sake of this site, which I have no stake in, please discontinue this discourse. Let's all - that reads ALL just stop the childish bull shit, learn to get along or ignore and build your projects. PLEASE!