Hi ever one I have just done a 430 rebuild and installed a bigger cam. http://www.taperformance.com/proddetail.asp?prod=TA_212-455&cat=153 Now the car stalls when put in gear at normal rpm. I have a new Holley XP 750 on it and had a micanic look at it . He suggested I may need to put a higher stall converter on it. It has the original stall converter on it ( possibly a switch pitch but all the switch gear is missing). Please help.
the 212 isnt THAT much cam....I'd take a look at your mechanical advance/initial distributor timing, etc...You might find that you've got too much mechanical advance at 700-900 rpm.
your car should idle with the throttle blades nearly closed, it should look like the picture from underneath. holley tech line should have some answers especially for what they charge nowdays for a carb, have you checked vacuum at idle and in gear. as Rhett said it's not overcammed so tuning with mixture screws, air bleeds or timing should get it corrected. good luck
Running more initial timing can help a lot. Do an experiment. With the car idling in Park, advance the timing up to 20*, and then put it in gear. If that makes the difference, you will need to reduce the amount of mechanical advance accordingly.
You might have to close the primary throttle blades and open the secondaries more. There is a set screw to adjust them. My 308S idles at 800 in gear
If all else fails, check for a vacuum leak if the intake was removed to replace cam. Or a carb related vacuum leak. GL Derek
Do a compression check. Sounds like she's low on compression. Cam timing can cause low cylinder pressure as well. See where your at.
There's no way that car should stall with that cam and a stock converter. I had a small cam and stock converter. Ran great in park and in gear at a stop light. Now I have a higher stall converter. No difference.
I run almost the same cam, on a stock, 50-year-old, low-stall converter. Really does not sound like a converter issue to me, especially on a new rebuild with a new carburetor. So many other variables here. Was the camshaft checked with a degree wheel? What's your initial timing? Where is the idle set at in park? Is your vacuum advance hooked up? Which vacuum advance canister are you using (should be a B-XX stamped on it, where XX is some integer)? How much vacuum is the engine making at idle, in park? How much total advance do you see at idle, in park? Is your engine making enough vacuum at idle to properly engage the vacuum advance? What's your confidence in the carburetor settings being "close enough"?
