I posted this on the FE Engine forum ... but I've also been a reader at FE Power for sometime too. So I figured I'd ask the same questions here.
To start, I've had my 1966 Galaxie 7-Litre since 1995. Motor was built by a reputable Ford shop which is still in business today. I was slowly restoring the car so I didn't put a lot of miles on it. I'd estimate less than 5,000 since the build.
Now I’m planning to pull the 428 for a re-fresh (new gaskets, seals, rings, etc). While I’m at it, now is the time to consider making a few upgrades. But first, here’s my current setup:
Motor - 428FE (1966) standard block, bored .040
Carb - Holley 750DP
Intake - Ford Cobra Jet medium riser dual plane intake
Exhaust - 427 cast iron headers, 2.5” dual with H-pipe, QTP electric cutouts
Pistons - stock type 10.5-1 TRW cast iron
Rods - stock with ARP bolts
Heads - standard C6AE-R
Head work - bronze guides, hardened seats, 3-way valve job, heli-coiled, stainless valves, HD valve springs
Cam - Speed Pro CS1025R Hydraulic; Duration: 292⁰ (214⁰ @ .050) INT / 302⁰ (224⁰ @ .050) EXH, Lift: .510 (.295 lobe) / .536 (.310 lobe), Overlap 112⁰
Block work - oil mods including 5/8” pickup, CJ oil filter adaptor, CJ windage tray, ARP dist rod, block machining & chamfering, Melling HV oil pump, head restrictors
Transmission - Ford toploader close ratio with 2.32-1 first gear
Rear gears - 3.25 Ford 9”
Tire height - 29” / 255-70-15 rears
Vehicle weight - about 4,200lbs
Starting line ratio - 7.54 (2.32 x 3.25)
Intended usage - heavy-footed street; strong low/mid-range torque; decent idle/vacuum; 65-70 mph cruise speed at 2,500-2,800 rpms
Planned modifications - David Kees wide-ratio conversion kit; 3.55 or 3.73 rear gears, 7qt deep sump pan & pickup (C8AX-6675-A / or Milodon)
As you can see, the motor already has the CJ dual plane manifold, 427 cast iron headers, 750cfm carb, 4 speed and good exhaust (plus the FE oil mods). Seems it would be pretty easy to add Survival, Blue Thunder or Edelbrock RPM heads with 2.09/1.66 valves. I’d also have the port-matching done as needed. As of now I'm planning on doing both.
I know a car this big needs low-end power/torque. I plan to do the Kees wide-ratio conversion and change the ring/pinion to 3.55 or 3.73 for improved SLR. But I also know the motor has to be built with this kind of size/weight in mind. So beyond the heads, I’m not sure how to plan the best design.
Here are my questions:
- Which heads do you recommend (Ed, BT, Survival, Bear Block, etc)?
- Does a roller cam make sense for this package and intended use?
- If so, is it worth the investment? I understand it entails a Retrofit kit with cam/lifters plus a steel dist gear & custom length pushrods.
- If I go roller cam, do I need to change the rockers given the intended use and likely RPM range? (not talking rollers, but that I heard Ford rockers can be a weakness)
- What cam/profile is recommended? (Understand more lift and shorter/medium duration is generally better for big vehicles with torque motors)
As you can see, I don’t want to overbuild the motor. I also understand that as I add more horsepower, the power curve moves up the RPM scale while making the band narrower & steeper. Likewise, I get that the importance of a combined package where the sweet spots of the cam, heads, intake, carb, compression ratio, headers and exhaust are in the same RPM range.
Again, this car is intended for street use, though I like to drive heavy-footed. I’m seeking a nice power band, heavy at the lower end but strong pull through mid-4s or low-5s. I don’t mind if the top is 5,500 rpms. I’d also like to cruise at 65-70mph turning around 2,500 rpms.
This car is restored and very original/stock appearing. I want to retain that appeal as much as possible.
Any help/insight/advice is GREATLY appreciated.