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Original Message
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| RE: S code rebuild |
| By McQ - 02/10/2003 11:26:08 PM; IP 63.191.224.73 |
"just rebuild it to near original"...okay here's my recs:
have a quality, trustworthy, recommended machine shop do the rebuild for you.
Build the 390 short block to stock specs including a C6OZ-6250-B cam which is the stock cam for a '66 - '68 390GT. You may have to shop around and I think a similar grind cam is available from Crane. I think it's offered through their "factory blueprint" series. Check Cranecams.com. Run the whole kit including the cam grinder's matching lifters, valve springs.
Have the trusted machine shop improve the oil flow a little between the oil pump & filer adaptor. Follow their recommendations on oil pump. I think a HD oil pump drive shaft is a good idea. Available from ARP. A stock Unibody oil pan is fine for all around mild performance driving. Oh and do run a windage tray which is still available from Ford's High Performance line - Ford Racing Parts.
Heads? Most likely you have a set of C8AE-H. Have the trusty machinists rebuild them stock adding those new valve springs. They might suggest restricting the oil passages and that's not a bad idea. I would run new adjustable rockers to obtain 1.76 ratio. With hydraulics you'll only have to adjust them once. You just get a little bit more lift out of your smooth but broad power range GT cam. Your max RPM will be around 5,700, maybe 5,800 tops. Which is plenty for your intended use. And that 390 will rip fine from idle to the high 5's.
Induction: Edelbrock Performer RPM topped off with a carb of 600-700 CFM. Edelbrocks AFB style carb is easy to work with it performs. I think you can buy a new Holley 600CFM center pivot float style that'll look very close to the original. And because it's new it'll work. If you got the original Holley 600 with your package, send it to Joe Bunetic and let him work his magic on it and it'll be good as new, er actually better.
Ignition: Run the MSD distributor and 6A or AL box. Not an inexpensive ignition but it'll light 'er up.
Headers - FPA for the C8AE-H. The stock GT ex. manifolds make great shop wall deco.
Gearing - 3.50.
Traction Bars - Traction Master still offers them and they're reasonable. Stick shift Mustangs/Fairlanes, etc. need leaf spring support/assistance or you'll embarass yourself jumping around like a jack rabbit when you light those 60 series meats up.
Quick and somewhat random thoughts. You're a very lucky man to have come upon a '68 S code 'stang.
I'm sure there'll be lots of great ideas coming. |
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