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Old 09-11-2004, 10:21 PM   #1 (permalink)
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bigger cam more timing?

im trying to set my timing. i havent really done this before. the engine is a 302 hipo and all i relly know about it is a few mechanics have told me that there is a big cam, and that its been bored 30 over. i notice that the book says the year engine i have (68 302) is supposed to be 6. with a bigger cam and the engine bored out, am i supposed to increase the timing? i did set it to 6 but the engine ran like crap. I then increased it to 8 and it helped a little, but still ran pretty bad. any advise would be great!
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Old 09-12-2004, 02:28 PM   #2 (permalink)
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bigger cam more timing?

anyone?
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Old 09-12-2004, 05:20 PM   #3 (permalink)
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bigger cam more timing?

Set it for 12 base and you should be in the ballpark.The 68 302 I had ran great at 12 degrees base and lazy at the 6 stock setting.
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Old 09-13-2004, 03:39 AM   #4 (permalink)
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bigger cam more timing?

generally most engines like the initial timing set at between 10 and 14 degrees btdc, with 36-40 degrees total timing. this is for normally aspirated engines only as supercharged engines like less timing, both initial and total.
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Old 09-13-2004, 05:59 AM   #5 (permalink)
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bigger cam more timing?

Runs like crap...do you mean idles poorly??????

If it has a big cam it wont idle very well at all.

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Old 09-13-2004, 06:58 AM   #6 (permalink)
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bigger cam more timing?

32-36 degrees total timing
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Old 09-13-2004, 08:49 AM   #7 (permalink)
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bigger cam more timing?

I have my advance curve set for 20 deg base timing and 36 total. Smooth idle , 14" vacuum, no cranking issues.
Xtreme Solid Roller cam
230/234 @ .050
.580/.600 lift.
110 LSA
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Old 09-13-2004, 02:20 PM   #8 (permalink)
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bigger cam more timing?

i mean it like spudders when trying to accelerate. its just like a big loss of power. i ended up putting it up to 22 and it seems to run a whole lot better.
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