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Old 11-13-2008, 01:36 PM
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66 Galaxie 500

Me and my dad just purchased a 66 Galaxie 500 with the original 390BB.
The body is in excellent shape but we were wantin more horsepower and torque. The tranny is a powerglide. On the highway it takes a blockade to stop her but the bottomend is lacking. The only mod is a holley 600.

What can we do for more performace(we want to keep the big block).

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Old 11-13-2008, 06:58 PM
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Quote:
Originally Posted by BowTie74
The tranny is a powerglide. On the highway it takes a blockade to stop her but the bottomend is lacking. The only mod is a holley 600.

What can we do for more performace(we want to keep the big block).
Cruise-O-Matic--------no powerglide in a Ford.
Nice looking car the 66 is---kinda square tho.

This is a big heavy monster and probably has some tall gearing in the rear end.
This is one reason why is seems it takes a while for it to get going.
But then again----it might not feel it is moving because it is a big car.

My ol' Chrysler 300 did not seem it was accellerating at all til ya hit 30mph.
(probably where it finally got traction).
But, for the most part, these big cars do not feel like the smaller cars on accelleration
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Old 11-13-2008, 07:36 PM
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The 390 is an FE engine, so it can use most of the same parts as the Ford 428 and 428 CobraJet. There was also a high performance version of the 390 in the 1968 Mustang (and in other Fords).

The 428 Cobrajet had better heads, more aggressive cam, aluminum intake was available, and some years they had factory exhaust manifolds that were similar to tubular headers. The Super Cobrajet had solid lifters, external oil cooler, and several other mods to make it more durable.

I'd find a couple of books on the Ford FE engine and start reading. Its a good, solid engine and there are a lot of relatively inexpensive parts available. You can spend as much as you can afford.

Bruce
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Old 11-14-2008, 12:40 AM
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You'll find suggestions here that span mild to wild. If you're set on keeping the 390, then a complete and coordinated power package is available from Edelbrock. Intake manifold #7105, cylinder heads #60069, cam/lifters #7106, timing set #7808, valve springs #5767 and using the 650-800 CFM carb of your choice.

Call and talk to 'em about it....
http://www.edelbrock.com/automotive_.../contact.shtml

Personally, I've owned several 390's through the years, but I won't have another one. Costs too much money to make 'em fast. If I had your car, I'd pull the motor and trans and wrap them up in a corner in case the next owner wants them. Then I'd contact Crites for motor mounts and headers and stuff a 460 in there with a C6.
http://www.critesrestoration.com/galaxie.htm

Shop around for a mid-70's motor with D3VE heads (97 cc chambers). I'd bore the block 0.060" and use these pistons for a 8.8:1 static compression ratio with the 97 cc chambers.
http://kb-silvolite.com/performance....tails&P_id=189
I'd cut the block decks for a 0.009" piston deck height and use these gaskets for a 0.050" squish...
http://store.summitracing.com/partde...8&autoview=sku
800 CFM carb
Edelbrock Performer RPM intake manifold
Timing chain set from '68-'71 429. Later sets were retarded at the crank gear.
Call the cam grinder of your choice for a recommendation.
Leave the stock highway gear in it. You'll have more torque than you know what to do with and it'll run on junk pump gas.

Last edited by techinspector1; 11-14-2008 at 02:28 AM.
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Old 11-15-2008, 07:26 AM
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Quote:
Originally Posted by BowTie74
Me and my dad just purchased a 66 Galaxie 500 with the original 390BB.
The body is in excellent shape but we were wantin more horsepower and torque. The tranny is a powerglide. On the highway it takes a blockade to stop her but the bottomend is lacking. The only mod is a holley 600.

What can we do for more performace(we want to keep the big block).
Probably the cam is running very retarded due to a worn out timing chain.
An up grade to an RV or 4x4 cam from CompCams (etc) would be a good idea.
Valve spring replacement is a must. They were weak when new.
The distributor is probably worn out also, necessitating a reman or upgrade. A proper curve is obviously needed.
Long tube headers wake up a 390 when used with a good system (Magnaflow mufflers).
Beyond this, a proper tune will make a difference.
Don't forget a slight stall speed increase in the torque converter to get things moving. Lower rear gears will help, but also will consume more fuel in all circumstances.

Or spend thousands to build a race 390 or 460.

The 65-72 chassis are basicly the same, upgrade to disc brakes ASAP.
I have also been told (cannot confirm) that the 72-78 frame Torino and LTDII chassis front brakes/spindles are a bolt on.

Ford Guy
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