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crazypete · 10-21-2004, 08:19 AM

I'll go in tonight and pull the carb and threadloc the stripped bolts' tap. It still has threads in it, but you can see the stud rise as the bolt is tightened so they dont hold much. The thread-loc had worked before to hold it down and allow pretty good tighening to take place but I pulled/replaced the carb so much in the last 2 weeks that it came loose again.

I swapped my stamped rockers on cylinder #1 to see what would happen and I was shocked. The compression dropped from 115 to about 102!! This is with carb propped open and no other plugs. I _think_ this is telling me that the ports in the head and intake are too big and I'm having velocity problems.

Quick question for tonight's tuning session: Can a 4 corner idle carb be run like a 2 corner idle carb (put the 2 rear screws in and adjust from the front).

I found an old post with the intake trick. 3-7 psi vacuum while cranking with throttle blades shut. Will do.

10-21-2004, 08:19 AM	#14
crazypete Registered Member Join Date: Sep 2002 Location: Boston Posts: 592	Re: Carb has too much idle hole drilled? I'll go in tonight and pull the carb and threadloc the stripped bolts' tap. It still has threads in it, but you can see the stud rise as the bolt is tightened so they dont hold much. The thread-loc had worked before to hold it down and allow pretty good tighening to take place but I pulled/replaced the carb so much in the last 2 weeks that it came loose again. I swapped my stamped rockers on cylinder #1 to see what would happen and I was shocked. The compression dropped from 115 to about 102!! This is with carb propped open and no other plugs. I _think_ this is telling me that the ports in the head and intake are too big and I'm having velocity problems. Quick question for tonight's tuning session: Can a 4 corner idle carb be run like a 2 corner idle carb (put the 2 rear screws in and adjust from the front). I found an old post with the intake trick. 3-7 psi vacuum while cranking with throttle blades shut. Will do. __________________ 91 GT Carb conversion, holley 600 double pumper, edelbrock performer intake, FMS "C" drop springs, march 1000 underdrive pullies, crane 1.7 roller rockers, GT-40P headers, bassani x pipe, american thunder catback, FMS 4.56's, msd aL6, trunkmount battery, A/C eliminator kit, 3000 stall tci streetfighter, AOD with transgo kit, A+ servo, 300M hardened lockup shaft, kevlar bands and 28,000 gvw trans cooler, 3 core radiator, 300 lbs stripped with a full interior Last edited by crazypete; 10-21-2004 at 08:40 AM..