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Old 10-13-2008, 01:44 PM
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350... timing?

Ok, I have a 350 SBC (just did recent engine swap from a 305) and i got everything working and its going great and now i want to tweak it, i looked in my repair manual for timing specs, but i dont know what year the engine is i just know it came out of the same year camaro as my firebird but i dont think that was the original engine that was in it. Casting number 3970010 pretty common but the repair manual says for most of the 350's in there to put it at 16 degrees while some said 8. I tried 16 and its feeling sluggish still until about 3k rpm, not sure if its the timing or the vacuum advance or even the dist. itself, its a Accel with supercoil and accel with 8mm wires and the plugs are ac delco that came off my 305 (dunno if those are the appropriate ones to put in a 350) if anyone can tell me what the correct timing would be for my 350 390010 that would be awsome.

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Old 10-13-2008, 02:36 PM
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Depends on the cam, ported or full vac advance, A good rule of thumb is set your timing with the vac unhooked and plugged at 36 total @3000rpm if you have a dial back light or degreed balancer.With a stock dist. and mild cam 10 to 12 degrees at idle is pretty close with vac unplugged at idle.Again depends on your particular setup big cams like lots of initial and very little centrifigal advance example 20 degrees initial with 16 centrifigal all in by 3000.Let us know the cam specs and we can be more specific.
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Old 10-13-2008, 06:14 PM
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ok sry i should of listed specs of the engine: Stock internals i.e. cam, rotating assembly, Aftermarket fuel pump (i think stock though) its chrome. Edelbrock 600cfm performer carb, Mr.Gasket spacer plate, Edlebrock rpm intake and headmen headers. so cam specs are stock, which would make me think this would be easy to time but i think its the vacuum advance, cause when i was at the track about a week ago i dumped the gas and it spitted and sputtered until i got to about 3000 rpm and then it woke up and started running great.
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Old 10-13-2008, 06:27 PM
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here is some pics of the engine, they were for myspace though so there not closeups or anything. dunno if they will even help.

http://i375.photobucket.com/albums/o...y/myengine.jpg
http://i375.photobucket.com/albums/o.../myengine2.jpg



and heres a vid of me at the track (probably not gonna help at all) http://www.youtube.com/watch?v=nr0kZ8VKo9Y



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