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timing issue #840447 10/27/10 08:18 PM 10/27/10 08:18 PM
Joined: Feb 2007 Posts: 352 Pennsylvania, USA Big_Fish OP enthusiast
Big_Fish OP enthusiast Joined: Feb 2007 Posts: 352 Pennsylvania, USA	What's the best way to dial in the timing I should set? I have a 440 stroked to 500 cubes, around 14:1 compression. Been running 34deg. Looking to make some adjustments and wondering if I should try 36 without detonation? Any experience or insight on this would be helpful.

Re: timing issue [Re: Big_Fish] #840448 10/27/10 08:21 PM 10/27/10 08:21 PM
Joined: Sep 2006 Posts: 4,628 Columbus, Ohio wheelsup68dart master
wheelsup68dart master Joined: Sep 2006 Posts: 4,628 Columbus, Ohio	What fuel you run? I would think 2 degrees in either direction would not hurt. Up the timing until MPH starts to fall off then you are to far.

Re: timing issue [Re: Big_Fish] #840449 10/27/10 08:30 PM 10/27/10 08:30 PM
Joined: Nov 2004 Posts: 1,708 S. Il. U.S.A. 5spdcuda top fuel
5spdcuda top fuel Joined: Nov 2004 Posts: 1,708 S. Il. U.S.A.	At 14:1 this is clearly not a pump gas engine street engine. That being the case I would probably elect to simply run a locked advance. Just to be safe and assuming that you won't be tuning it on a dyno I would start at 30* and run at least two runs at this setting. Bump it 2* and make two more runs. Repeat this until trap speed starts to fall off. Needless to say it's important to keep all other variables [ launch and shift rpms etc. ] the same. If running alky you could start at 32* If on gas I would start slightly rich on the A/F mixture. Good luck.

Re: timing issue [Re: 5spdcuda] #840450 10/27/10 11:01 PM 10/27/10 11:01 PM
Joined: Jun 2003 Posts: 9,225 Charleston S sixpackgut Drag Week Mod Champion
sixpackgut Drag Week Mod Champion S Joined: Jun 2003 Posts: 9,225 Charleston	put good gas in it and give it a twist. Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs

Re: timing issue [Re: 5spdcuda] #840451 10/27/10 11:12 PM 10/27/10 11:12 PM
Joined: Feb 2007 Posts: 352 Pennsylvania, USA Big_Fish OP enthusiast
Big_Fish OP enthusiast Joined: Feb 2007 Posts: 352 Pennsylvania, USA	Run 112 fuel. Thank you for the guidance. Seems to run a tad rich. Wondering if bumping up 2deg will help. I'll try 2 passes change it and make 2 more shifting the same.

Re: timing issue [Re: Big_Fish] #840452 10/27/10 11:48 PM 10/27/10 11:48 PM
Joined: Jan 2003 Posts: 6,266 Renton Washington T Triple Threat master
Triple Threat master T Joined: Jan 2003 Posts: 6,266 Renton Washington	112 sounds a bit low to me for the much compression. Anyone else think the same? -Dustin 67 Dart, 9 second, 392" G3 Hemi 68 Barracuda 340 F/SA

Re: timing issue [Re: Big_Fish] #840453 10/28/10 10:13 PM 10/28/10 10:13 PM
Joined: Aug 2003 Posts: 43,157 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,157 Bend,OR USA	I dyno tested a B1-BS headed 452 C.I. 440 motor several years back that had 14.7 to 1 comp. ratio, it liked the VP C14+ versus there C12 race gas. Around 25 HP more with C14+ What heat range and brand spark plug are you using now? Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: timing issue [Re: Cab_Burge] #840454 10/29/10 01:34 AM 10/29/10 01:34 AM
Joined: Feb 2007 Posts: 352 Pennsylvania, USA Big_Fish OP enthusiast
Big_Fish OP enthusiast Joined: Feb 2007 Posts: 352 Pennsylvania, USA	NGK, coldest plug they make.

Re: timing issue [Re: Big_Fish] #840455 10/29/10 02:23 AM 10/29/10 02:23 AM
Joined: Aug 2003 Posts: 43,157 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,157 Bend,OR USA	Gasoline or alcohol? Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

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