The only thing I can remember is changing nozzels, stepup springs metering rods and jets, runing two 500 cfm carbs i would probably run the smaller pump nozzels, rods and jets you would have to play with in addition to timming, then do a plug run.
QUOTE=TexasRatTrap...Great info Rich, Awesome link. I guess the step-up springs are like Holleys power valve. I really don't know what a lot of it means or what it does but, I know I want it and I want to learn about it.
Ditto..... I have an "old crossram two-four" manifold that I would like to put on the Opel over the Winter. It was bought off of eBay quite some time ago. Originally got it to put on another "gasser project" ('69 C10 short bed p/u) and after I sold it was going to use it on my El Camino (also a gasser project"). For years it has graced the walls of my workshop waiting for the day to be put back in service. NO DOUBT it will be a "great addition"
to our Opel gasser!!!! It'll definitely "turn some heads!!!!
I was told it has two 600 cfm (??? haven't checked for sure) that was used by the previous owner on a '55 Chevy which has a "mild" 283ci engine. He told me the setup worked just fine with no issues with the rather "mild SBC". It has no choke but does still have vacuum operated secondaries. It came with all of the linkage so all I need to do is put it back together.
Currently the fairly "stock 350" (except for a pretty "lumpy sounding cam") is running a 750cfm Holley carb which runs good. Currently, the only problem is the accelerator pump is setup for "drag strip" 3000 rpm launches. It is causing a slight "bog" when pulling out & when accelerating after the car has been coasting (with no gas being given). I need to re-adjust the accelerator pump.
So I appreciate all of the "carb info & tips" I can get.