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What is a good street plug for my 350 small block? I like AC and Autolite. Need heat range.
Trick Flow aluminum heads (64 cc chambers) 23 deg. 195 runners
Comp Thumpr Cam:
Lift .513 intake and 498 exhaust
Duration @ .050 is 227 and 241
Holley 650 dp
MSI ignition
Thanks for any help
Nomad Mike
You didn't finnsh all the information.
What piston you have? Dome or flat top and dish?
What fuel are you plan on burning?
Oh, sorry bout that.
Flat top pistons, 91 octane here at sea level in so. Calif.
Is it advisable to run a hotter plug with aluminum heads?
Nomad Mike
The last number on the Autolite plug part number it the heat range, so you need to run three or four un the heat range.. I would start out three first and if the motor skip little while driving the step up one number until it runs smooth. If you are running a 350 to got 10:1 compression.
Great, thanks Racecar.
Now maybe you can tell me what a good total timing starting point would be.
Nomad Mike
Start at 36 dreg total timming, now if it rattle little back the timming down little until it stop.
Danke Schoen