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timing 186 engine

hi all I was wondering where the timing should be on a 186 engine with a 35602 crow cam? other things on the motor are 350 Holley stage 5 yella terra head posts removed ported bigger valves harder springs, roller rockers, electronic ignition.
I cant find the specs to know what's the timing best set at, regards Brett

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Hi Brett. 8-10 degrees should do it, but don't quote me on it. I'm actually starting a new 202 build with very simmilar setup. Using a 202 at 40thou that I have with a crow 35603.

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I'd rather drive my old holden than a new ford!

cheers

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Hi. My 186 with a mild cam has a static timing setting of 19 deg, total timing is 38 and it's all in at 3000 rpm's with a Modified distributor curve.

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ok thanks mate, where did you get the dissy remapped? thanks

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I did it myself, pulled the disi apart and added some welding the the advance stops.
I then used a small round file to get the disi to desired advance. I also ditched the heavy spring for another light one.
I then used a timing light with a degree setting and some road testing.
You may not need as much advance at idle.
My Lobe separation is 107.2. You need to find out what timing setting works best for your cam at idle and work back from there, this is normally in-between 10 to 20 degrees. Total timing is normally in-between 36 - 38 degrees.
Advance should start at around 1200 to 1500 Rpm's and depending on the state of tune of your engine should be all in in-between 2600 to 3500 rim's.
Fuel plays a part as well,
My 186 has a static compression ratio of 9.6 to 1, but dynamic compression ratio of 7.8 to 1 so it is set up for 95 grade pump fuel.
This may be worth a read
http://www.s26261265...

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