• 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
MSD 8580 with Roller Retrofit
#11
lduke12;199844 Wrote:I took this post from 460Ford.com explaining exactly what im talking about towards the end of the post. Also just got off the phone with MSD and they know about the issue and suggest going back to stock oil pump shaft, but did mention people have trimmed off the end of the dizzy shaft to still use the ARP shaft.

Danny Cabral01-17-2006, 12:00 PM
Distributor Gear Installation Info

Link from OEM replacement instructions:
http://www.racesystems.com/cobra/images/460distgear.jpg

Link from Ford Racing Performance Products:
http://www.google.com/url?sa=t&rct=j&q=&...%2Fdownloa d%2FtipsPDF%2FDistributorGearInstallation.pdf&ei=iH_KUvLUJcvxoASVpoCABw&usg=AFQjCNFsCJUS2_ZhK4T1dzBwgW2lzd5cgg&sig2=yfvi-EXNsQcINsJtE8Zd8g&bvm=bv.58187178,d.cGU&cad=rja

Link from MSD Ignition:
http://www.google.com/url?sa=t&rct=j&q=&...nstruction s%2FProducts%2FTech_Info%2Fgear_install_frm28590.p df&ei=X3rKUqLxM8rFoAT8jYCYDw&usg=AFQjCNFm4MJs5QPGy4xd-0L0w0gzUD8J7A&sig2=4EfbKRNk_giS8USqE_R6HQ&cad=rja

Link to entire previous discussion:
http://www.network54.com/Forum/thread?fo...1099689969



351W (TFI also) and 460 distributor compatibility
Spoke with MSD technician about 351W/460 distributor compatibility. He said they get this question alot and the confusion is with:
1) pre/post EFI era distributor
2) oil pump driveshaft type

(I'll paraphrase what HE said.) If you're dealing with pre-EFI era distributors, then the two distributors are directly interchangeable after you've swapped the gear. The only difference is, the 460 distributor is slightly taller (external-from engine to cap) and the gear. Supposedly, the 351W distributors have a minor clearance issue with the 460 Edelbrock Victor intake manifolds (and possibly some thermostat housings).

Now if you're dealing with a 351W EFI distributor, then there is a minor implication that is easily addressed. The 351W EFI distributor does have a longer shaft (he didn't know exactly how much longer, but he said less than 1/2"), but the female hexagon drive (on end of distributor shaft) is deep enough to be used with an STOCK oil pump driveshaft. The problem is, no one seems to use the stock driveshaft. If you're using an aftermarket heavy duty oil pump driveshaft (such as ARP and most other brands), the 351W EFI distributor will not fit in the 460 because the driveshafts are a larger diameter (reduced only at hex end). You then have to cut, the difference in length (between the two distributors), off the end of the 351W EFI distributor shaft. This is what we discussed...just thought I'd pass it on.

Link to entire previous discussion:
http://www.network54.com/Forum/thread?fo...1109120747

Danny is talking about using a 351 Windsor distributor. The MSD 8580 is supposed to be correct for 460/351C applications. I would not cut the distributor. I would look more closely at the oil pump driveshaft. Do have access to an old duraspark distributor to use for comparison?

73 conv. 460, D0VE large valve heads, Performer RPM manifold, Voodoo 227/233 cam, Holley 950 HP carb, C6 trans, 3.25 trak-loc.
  Reply
#12
TommyK;199850 Wrote:Danny is talking about using a 351 Windsor distributor. The MSD 8580 is supposed to be correct for 460/351C applications. I would not cut the distributor. I would look more closely at the oil pump driveshaft. Do have access to an old duraspark distributor to use for comparison?

Correct I was only showing that because people are posting the same thing with the 8580, I called MSD and they physically told me to either go back to stock oil pump shaft or they have seen folks cut some material off the end of the dizzy shaft.
  Reply
#13
Well, I can tell you that a duraspark distributor works with an ARP shaft.... And the MSD distributors use the same pickup as a duraspark distributor...

1973 Mach 1 Q code 351 4V, 9A paint, standard interior, 3.50 rear, C6 trans.
  Reply
Share Thread:  


Possibly Related Threads…
Thread Author Replies Views Last Post
  roller cam lifter 164runner 4 146 10-12-2019, 10:32 AM
Last Post: 164runner
  October Edition Mustang Monthly -Flat vs. Roller Cams mustang7173 0 121 10-04-2019, 05:11 PM
Last Post: mustang7173
  MSD Pro Billet Dist 8350 Outrider4 10 452 03-09-2019, 08:17 AM
Last Post: n_reckless
  Any experience with these roller lifters? scgamecock 2 341 11-17-2018, 04:13 PM
Last Post: johnwanzel
runninpony roller rockers/studs NOT A T5 17 1,096 09-16-2018, 10:14 AM
Last Post: NOT A T5
runninpony roller rockers NOT A T5 15 1,010 08-05-2018, 09:59 AM
Last Post: tony-muscle
  Comp Cams Hydraulic Roller Conversion question 73pony 31 3,418 06-08-2017, 06:07 AM
Last Post: turtle5353
  MSD distributer: mechanical vs Vacuum advance? cazsper 5 1,152 04-17-2017, 09:07 AM
Last Post: mustang7173



Users browsing this thread: 1 Guest(s)