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stroker timing
If your just asking straight out what to set your timing at I offer this advice. Intial timing 10-14 degrees and total between 28-36 degrees. Now having said that, many variables will need to be taken into account.
Most small blocks of 302 design can run more total timing, greater then 32 degrees, when you have less then 350 cubes.
Cylinder heads designs will cause great fluctations in timing, because of chamber design. Most even advertise 28-34 degrees with a cool plug properly indexed.
Greater then 350 cubes and 32 degrees might be the max depending on your set-up mine runs 31-32 degrees and makes good power. 393 cubes. 12.5:1. I run pump gas with a octane booster.
My oldest Boys 347 runs 36 degrees with 9.7:1 runs pump gas and octane booster, we both run cats. So Race gas is out. I write these numbers down and adjust them at the track on a track rental day, were you can get 10-15 pass, and verify he set-up. If running a carb you should know what your engine vacuum is and write that number down as well, so you can buy and install the correct power valve.
All set-ups have a point of no return, listen carefully to your engine if it pings, back-off your total until it runs with out pinging. One other word of advice, if your running a MSD dist, try using the lightest springs, I've always had my best results at the track when running them. At least try mixing and matching it kind of fun see how your engine reacts to the various spring combos.
Mine was really slow with the heaviest on the bottom but really strong on the top, with the medium springs it had more power on the bottom but a little less on the top. With the lightest springs it lit the tires up and the top started falling off earlier then it had before. I used the lightest springs, and adjusted my tune on the tires and suspension, but this is a good no cost engine tune that most folks can do, and it should cause no engine damage just changing springs. You might even have to change the bushing in order to get you total max-ed out.
Have fun finding your own tune, these are just examples, not a perfect fix for your engine, adjust and drive, watch the temperature and make sure it starts and runs good, two very important things to consider on a street car, or daily driver. Make sure it runs good with what ever you setting is, it should be dependable and reliable, and shouldn't need a 24volt gear reduction starter to crank because you have 50 degrees dailed in..
[img]/phpBB/images/smiles/icon_smile.gif[/img] Mac
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