Thread: 383 spark plug tempuratures
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05-23-2005 07:46 PM #1
383 spark plug tempuratures
hi, i could really use some help and havent found anything on this site that addresses my problem. i have a 383 that has roughly 3,000 miles on it. its running 10:1 compression with a 236/242 520/540 at .050 110 load, 106 centerline camshaft, ported and polished performer rpm heads(1.50 rockers), topped with an air gap rpm and a 1" open spacer with a 750 speed demon(vacuum), hei distributor with a msd 6al. im having problems with the cylinders all running different temps (at least this is what i think). #1 and #2 cylinder spark plugs are always wet (threads soaked all the way) #3 and #4 are the same but not as bad, #3 is actually worse than #4, #5 and #6 are totally dry with the upper ceremic bone white, #7 is dry but is showing rich, #8 is running rich and the threads are wet until the last 4 threads. i thought it was an intake leak until i changed the carburetor from the break in edelbrock to the demon with a 4 hole 1" spacer ( i originally used a 4 hole and then changed to an open spacer hoping to break up the air a little better, which it did a little) anyways, with the edelbrock, cylinder#s 1, 2,3,4 were wet all the time while 5,6,7,8 were bone dry, borderline detonation. what the hell do i have to do to solve this problem? what steps do i take to identify the problem? any help would be greatly appreciated,,,,,, john
Ditto on the model kits! My best were lost when the Hobby Shop burned under suspicious circumstances....
How did you get hooked on cars?