tuning help needed

dust-u said

i dont think the 440 my buddy has is suffering from a carb issue...swapped it out with a brand new barry grant that was on a sweet running 440... still laid down... and pings and farts etc...like i said 12 degrees initial and 38 all in but i do understand getting the 38 to stay steady is a problem...I honestly believe the cam may be either severly retarded/advanced....everything else appears ok...this is a "fresh" motor...any ideas????:read2:

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If the timing is erratic I'd check the dist. bushing in the block. If it's worn it'll let the dist. shaft wobble and make timing erratic. That happened on my 360 and I replaced the bushing and it was rock solid afterward. If the bushing is not worn it must be a problem in the dist. What dist. is it? You may want check to see it don't have a bent shaft cause that'll make things erratic. If the cam wasn't degreed in it's possible it's off also. Awhile back I had 4 different brand timing sets and a day of nothing to do and I installed each one on an engine and checked the cam timing and found one was 4 degrees retarded. 2 were 3 degrees retarded, and the last was 1 degree retarded. None were advanced. I'd check the dist. first since the timing is erratic and get that fixed and see how it does.