rssteiny

if i remember correctly on a hp 500 carb motor you set the total timing at 34% at 3200 rpms is that correct and also do you have to unplug any wires or anything, or do you just set it. also i am running msd boxes does that make a difference.

thanks

GOODT

here you go this is for hp 500 efi

if you dont have a scanner, spx program or rinda program you can only set total advance which would be 32 - 34 deg total

rssteiny

they are carb motors not efi so all i need to do is just set them at 34 @ 3200. wasent sure about the msd boxes if that would change the settings.

thanks

rssteiny

anybody know for sure

axapowell

On my carbed motors (HP 500) I have the Crane HI-6M box and IF you are NOT using the factory installed ignition module or Knock sensor, just set the timing. You can be between 34-36 degrees total advance. If you have a curve setting on your box, you should have all the timing in by 2500 rpms...Hope this helps.

Dave

rssteiny

no curve setting on msd boxes, so should i set it all in at 2500 or 3200

thanks

Griff

Do you have a TB IV or TB V ignition?????

On a TB IV, you just set it and do not have to unplug anything. On a TB V, you have have to disconnect a wire or something like that. I'm not for sure on the specifics as I've never had a TB V. The MSD box does not change any of this.

You should have full advance at 3000rpms on an HP500. It uses a 20* advance module.

GETTINBYE

On a HP 500 carbed with Thunderbolt V you need to ground the short purple and white wire that comes out of the bottom of the distributor. This puts the system in base timing mode. Set full advance at 34*. Should have initial advance of 14*. Unground the purple and white wire restoring the ignition to normal. All done.

Mark