Cam to use with Webers question

[ksquared]

Aha - that explains it. Wonder when I graduate from "newbie"? Anyway, here is what I attempted to post with the URLs removed.

Hi guys,

First - thanks for all of your input. I finally got the cam measured. Here is what I have:

Intake opens 31 BTDC @ .050
Intake closes 32 ABDC @ .050
Exhaust opens 73.5 BBDC @ .050
Exhaust closes 7 BTDC @ .050
Lobe lift .368 (rocker ratio 1.76 = .648)
Overlap 24 degrees
Intake centerline 92 degrees
Exhaust centerline 130 degrees
Lobe Center: 110

It's a Herbert CGH2 -> link to catalog listing of cam

I've heard good things about this cam including it was one of Harvey Cranes favorites. I'm not sure why they don't publish cam specs. Maybe they want to keep it secret? Not really possible. Maybe they don't want to be held to a spec they can't keep? Hope that's not it!

Anyway, no olddog, I wasn't trying to get someone to tell me what I would love to hear. No redneck engineering here. Actually I am an engineer (electrical). What I was wondering was just what the physical affects are with intake reversion? I know it can result in a fuel fog above the intakes. Does it go away right after you open the throttle? A stumble off idle? Backfire risk out the carbs? I guess I was hoping to hear from someone who actually went through the condition.

I have no problem buying a different cam if necessary. Herbert suggested their CH6PJ which has a lobe center of 112. I haven't yet talked with Jim and I don't know Brent. Kinda new here. I just don't want to give away an obvious racy idle but if it's necessary so that the Webers run properly, I will. As for G-Pete's postulate - no brainer. I pick performance. My only prior experience with Webers was a 45DCOE on a Lotus many years ago (still have the carb).

Yes, saltshaker, these are 48IDF carbs using special adapters on a Blue Thunder manifold that Jim Inglese set up. As far as I know, this is the only such FE setup. Probably should have stayed with the Holley 3310 and Edelbrock F427 or PI manifolds I have but damn the Webers look cool!

Pic -> link to picture of my 48IDF FE Weber system with adapters

Hope this makes it...