[ERA Chas]

Dave,
Your workmanship is excellent. Just a couple of questions:
The progressive link to the rear carb is mounted in the lower hole; mine and many I've seen are in the upper. I think your's will come on sooner. Also I've since fabbed a direct link with heim joints and the rear in now 1 to1 with the front. I found a definite improvement in smoothness and throttle response with no ill effect. Of course I run 200 cfm less than you.
No offense but I'm not a fan of throttle cables, especially with the near 180 your cable makes over the headers. I've found that the cross-over linkage and all it's pivots need a strong and stable driving linkage. Especially with strong springs. ERA's all use rods and I fabbed thicker diameter solid rods (not all thread) with quality heims. Works very well for many years.
You're soon to add the return springs, right?
Would you mind posting a shot with the hat off? I'd love to see Barry's mod to the air horns.
Should run very well and please post results. Make little travel indicators for the vac sec linkages, you'll see how little they actually open even when you load it heavily.
Thanks,