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C4 Beam Plates for us power freaks

WhalePirot

Well-known member
Joined
May 9, 2002
Messages
2,945
Location
SoCA
Corvette
1984 White Z-51/ZF6-40/Shinoda body
These, I have ordered after being highly recommended by my most credible Vette shop, for higher power applications to further resist driveline component twisting. http://www.zfdoc.com/c4beamplatefeedback.htm

Seems like the comments originate mostly from draggers, but bennies await any car with loads of torque. :Steer

I paid $145, plus shipping.
 
I have a set of those on my '85...great piece and I installed them when I had my exhaust off. I think it took about 45 minutes to install including cleaning the surface of years of grease and stuff.

My car tracks perfectly straight on WOT runs. I think there is a group purchase on the corvetteforum.com for those c4 beam plates too.

Great investment.
 
Just looked and could not find them there, though I don't spend much time on that forum. They go on today, along with the rest of the parts.
 
Thanks, Mic. Gee, another day late and a few bucks short. At least Bill cut me some discount!

Mine came today.

Maybe we have 10 guys interested in the discounted deal...
 
HI there,
I use them extensively on my c4 customers cars. I suggest them to anyone with a c4.
Very nice, and extremely well made. Reduced driveline frequency by 1.37 hz. This is showing that it transmits less vibration to the car body.
Allthebest, c4c5:hb
 
Maybe we have 10 guys interested in the discounted deal...

Or.... NOT!

Mine are in. Subtle change, but I've not a lot of miles on the car since.
 
Man, I really should take some initiative here and make my own damned beam plates; every time I look at the those things I simply cannot justify the cost. I mean, that's a hell of a lot of money for a couple of simple plates with nuts attached. My torque arm isn't showing that much wear (elongation or distortion) at the bolt holes and it's got over 105,000 miles on it, much of its early life on the track too. ;shrug
 
Go, Ken, go. The guy promised to write me about another product of his; never did. I think UR on the right track, pal.
 
WhalePirot said:
Go, Ken, go. The guy promised to write me about another product of his; never did. I think UR on the right track, pal.

DO IT KEN! And send me a set while you're at it ;LOL Seems like a lota $, but if you don't weld much ----- yada yada, well great market for the guy. and a good idea paying off.

I'll gladly pay you Teusday, for a (a hamburger), beam plates today ;LOL ;LOL
 
Shoot, I reinstalled the torque arm torqued the bolts down earlier this afternoon, didn't bother with the beam plates. As I said before, my holes aren't that elongated that I can see. I ain't worried about it. ;)
 
Ken said:
Man, I really should take some initiative here and make my own damned beam plates; every time I look at the those things I simply cannot justify the cost. I mean, that's a hell of a lot of money for a couple of simple plates with nuts attached. My torque arm isn't showing that much wear (elongation or distortion) at the bolt holes and it's got over 105,000 miles on it, much of its early life on the track too. ;shrug
The ZR51 Performance C-Beam plates were not intended to solve a wear problem, ie: bolt-hole wear.

They were originally developed to make a ZR-1 or other C4 with a modified engine track straight under acceleration when there is a change in powertrain loading. On a drag strip pass, the plates prevent the little "side-step" a C4 makes at gear shifts.

Close examination will show that the beam plates are designed with certain features, both in construction and materials, which are necessary for this application.
 

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