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Old 04-29-2008, 11:50 PM
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Need 350 help bad!!

Hey im jake, new to the board. I have a 77 camaro with a 350 sbc in her. Some basics are TH 350 trans 2500 stall and 2.52 gears in the back(waiting on 4.11's). Anyways the motor is a stock bottom end with rings, all bearings, and a high flow oil pump. Next i got a comp cams 12-246 cam in it(274-280 adv. duration 480 lift) heads are Trick Flow aluminum 23 degree with 1.94/1.50 valves, 170cc intake 65 exhaust and 56cc chambers. Edelbrock performer intake and 1 5/8 headers with a 670 street avenger carb. Now my problem lack of power especially at low rpm. from 3000 rpm up it sounds ok but doesnt pull hard like it should. from 2000-3000 it hesitates and misses and plan old runs like crap. it idles perfect and plugs are fine. Where should i hav my timing for this motor im sick of this thing not running good. i also have a flame thrower kit in the distributor with the vacuum locked out and 36 degrees total and 13 degrees initial. Please tell me what is wrong. Thanks, jake

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Old 04-30-2008, 01:03 AM
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it sounds like gears my friend 3.73 would be ideal even over the 4.11s,try setting your timing at 14initial and 32degrees total
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Old 04-30-2008, 05:42 AM
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hook the vacuum advance back up. If you find the curve is not correct you can get different cans and adjustable cans thru ignition manufacturers. it will make a difference.
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Old 04-30-2008, 12:27 PM
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Thanks for all the input i was just wondering how i would go about limiting the mechanical advance to only 12 degrees, my ignition kit came with a few springs and should i plug the vacuum advance into a prted or non ported vacuum hole. hopefully i can get some 4.11's of a guy i know. thanks again, jake
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Old 04-30-2008, 11:38 PM
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I tried locking up the mechanical advance today and gave it 36 degrees timing right from idle i have to say it made a bit of a difference but still no good. when i first got it running i did the timing by ear and think thats when it ran best, but when i checked it had like 55-60 degrees advance total. does anyone else ever had this much advance? also im starting to really lean towards gears being my problem ever since i got this cam ive had trouble and the only thing i havent change is the gears. And i think with stock pistons and 56 cc heads i come in around 10-10.5 CR i know it has over 200 psi with a tester and im running 93 octane. hopefully this helps out a bit. thanks, jake
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Old 05-01-2008, 02:56 AM
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