360 initial timing? - Moparts Forums

Register Log In Moparts Forums Moparts Question and Answer 360 initial timing?

Print Thread

360 initial timing? #631737 03/05/10 09:44 PM 03/05/10 09:44 PM
Joined: Jan 2004 Posts: 163 Paris, Tx M mopartruckguy OP member
mopartruckguy OP member M Joined: Jan 2004 Posts: 163 Paris, Tx	I've got two questions here. What would you folks expect to see on initial timing for a 360 with a rv type cam (204 deg 427" lift) at idle, and also at what deg. do you normally see pre ignition?

Re: 360 initial timing? [Re: mopartruckguy] #631738 03/05/10 10:07 PM 03/05/10 10:07 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	What CR? 10-12 will get you close. If the starter doesn't kick back and it doesn't ping under wot or part throttle no damage is being done and it may respond to more advance. In order set: initial/slot length/springs/vac adv live every 24 hour block of time like it's your last day on earth

Re: 360 initial timing? [Re: mopartruckguy] #631739 03/06/10 03:58 AM 03/06/10 03:58 AM
Joined: May 2008 Posts: 5,399 Aurora, Colorado 451Mopar master
451Mopar master Joined: May 2008 Posts: 5,399 Aurora, Colorado	I'd start with 10 degrees initial, and about 36 total (without vacuum advance connected.)

Re: 360 initial timing? [Re: 451Mopar] #631740 03/06/10 05:31 PM 03/06/10 05:31 PM
Joined: May 2005 Posts: 2,628 Middle TN da50r master
da50r master Joined: May 2005 Posts: 2,628 Middle TN	Quote: I'd start with 10 degrees initial, and about 36 total (without vacuum advance connected.) I've got a 360 in a Dart, and that's exactly where I ended up with 10.4 compression..

Re: 360 initial timing? [Re: da50r] #631741 03/06/10 08:40 PM 03/06/10 08:40 PM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	Remember that to set total that you have to know where the distributor advance peak is compared to engine RPM. Just going in and setting the advance to a total at say 2500RPMs with a uncalibrated distributor will give you way too much advance because it is not done advancing.

Re: 360 initial timing? [Re: MoparforLife] #631742 03/06/10 10:05 PM 03/06/10 10:05 PM
Joined: Jan 2004 Posts: 163 Paris, Tx M mopartruckguy OP member
mopartruckguy OP member M Joined: Jan 2004 Posts: 163 Paris, Tx	I was curious at what an average engine seems to "like". Mine is set at approx. 10 deg. BTDC and is pinging on premium fuel.

Re: 360 initial timing? [Re: mopartruckguy] #631743 03/06/10 10:34 PM 03/06/10 10:34 PM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	Quote: I was curious at what an average engine seems to "like". Mine is set at approx. 10 deg. BTDC and is pinging on premium fuel. 10 is not an excessive amt of initial. I'm assuming you have no quench. Might go w a stiffer spring and keeping the total (w vac adv "if used" disconnected/hose plugged) at 35. live every 24 hour block of time like it's your last day on earth

Re: 360 initial timing? [Re: RapidRobert] #631744 03/06/10 10:40 PM 03/06/10 10:40 PM
Joined: Jan 2004 Posts: 163 Paris, Tx M mopartruckguy OP member
mopartruckguy OP member M Joined: Jan 2004 Posts: 163 Paris, Tx	No quench and probably a little more compression than the iron heads and small cam can handle.

Re: 360 initial timing? [Re: mopartruckguy] #631745 03/06/10 10:42 PM 03/06/10 10:42 PM
Joined: Jan 2003 Posts: 1,482 Lake Orion, MI goldduster318 pro stock
goldduster318 pro stock Joined: Jan 2003 Posts: 1,482 Lake Orion, MI	I have a 77 360 with 8:1 pistons and magnum heads on the top and I run 15 initial and 35 total on 89 octane with no pinging. It runs awesome! '70 Duster 470hp 340/T56 Magnum/8 3/4 3.23 Sure-Grip

Re: 360 initial timing? [Re: goldduster318] #631746 03/07/10 12:00 AM 03/07/10 12:00 AM
Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,041 Lincoln Nebraska	Quote: I have a 77 360 with 8:1 pistons and magnum heads on the top and I run 15 initial and 35 total on 89 octane with no pinging. It runs awesome! Having your CR (or DCR) low enough to be able to run a healthy advance curve (on your choice of octane) is far better for power production than having to compromise the adv curve because the CR (DCR) is too high for the octane. live every 24 hour block of time like it's your last day on earth

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1