View Full Version : What to set timing at for 383 stroker motor


James_1980rs
09-27-2009, 11:36:50 PM
Hey guys, I was wondering if anyone knew what the timing should be set at for a 383 stroker motor.

I have had issues with it running really rich and because of that bogging out and stalling. When I pulled a plug it smelt VERY strongly of fuel which also leads me to believe way to much fuel is getting through without being used. I have been told that redoing the timing will help with that. Any help would be greatly appreciated.

Thanks!

Rick WI
09-27-2009, 11:44:16 PM
Your jetting sounds way too rich. It is good to check timing to make sure you have somewhere in the 36-38 degrees of advance by 3000 but unless you have NO advance at all it sounds way too rich on the jetting.

James_1980rs
09-27-2009, 11:46:57 PM
it is a holley 750 four barrel electric choke carb I have on the motor. Should I back off the jets maybe 1 full turn to start or more/less?

Rick WI
09-27-2009, 11:53:55 PM
Are you sure the choke is pulling off when the engine is warm?

Idle screws, should dial in at 1 to 1.5 turns out from seated. Each screw should affect idle speed. If you turn one all in the engine should stumble. If not, something is screwed up.

Once idle is cleaned up then you can cruise around on primary circuit, front two barrels, and recheck plugs. If black you can go down 2-4 numbers to see if it cleans up. Throttle response should improve if you are going the right way.

If you have a fairly small cam, 220ish at .050 a 8.5 or even 10 power valve should be OK. Even a 6.5 might work.

James_1980rs
09-27-2009, 11:58:43 PM
Sounds good!
I will try those out when my buddy comes over to help Wed. He knows a lot more about my car than me :/ I need to get up on my reading!! haha.

Thanks for your help.

mjoc
09-28-2009, 01:26:57 AM
What are the spec of the cam. And what does the manufacturer of the cam suggest as a base line.

Mike

James_1980rs
09-29-2009, 11:44:26 AM
I honestly don't know the specs of the cam. I have not taken apart the motor since I got it. Probably wouldn't hurt though to see what I have...

I will do that when I plan on not being out for a while so I can look over everything.

-=79z28=-
09-29-2009, 12:57:38 PM
guys i would say this cam is in at least the ~280 duration range. sounds similar to an xe284, but like he said we have no idea what is in there. james you said a lot more on here than you told me! haha, now it makes more sense. we need to get an assortment of jets today too.

James_1980rs
09-29-2009, 08:17:24 PM
Yeah man! I will shoot you a txt here in a sec and see what you want to do about tomorrow. I am looking forward to getting this car running well :D Been a long time coming. haha.

I have been trying to post some stuff on here to get ideas and pointers since I dont know a lot about things right now and have been reading as much as I can because I would like to learn more. This site is amazing and has a LOT of Great people on it. Glad you told me about it!!!

James_1980rs
10-01-2009, 03:30:37 AM
Thanks to the amazing Travis and his auto tech teacher it turned out the distributor was bad...replaced that and reset timing and it is running great!

You are THE MAN Travis!!!!!!!!!!!:bowtie: