The 351 Project

Latest Mods: 9" Tru-Trac rear end The rear end is making nasty grinding noises on deceleration - I think a bearing has gone! This is the second time for the 8" ford Posi so I think it's time to change. I git the tru-trak at Randys' Ring and Pinion and the case at Currie enterprises. Change installed and it's great! Magnum 500 Wheels fitted with Bridgestone Potenza SO3 pole position tires Kirkey Racing Seats I bought a pair of aluminum seat shells from Kirkey. That was only the beginning! Here is a page I did on Welding Aluminum Learned more than I hoped to have to.

Suppliers, General Suppliers, Specific Body Chassis Suspension Cage Engine Heads Fuel Ignition Transmission Rear End Wheels

195.20 Kb  191.28 Kb  189.39 Kb  209.03 Kb

198.29 Kb  180.92 Kb  On the road at last - Big Sur, of course! 219.57 Kb  209.08 Kb

Engine

Edelbrock Aluminum Cylinder Heads for Fords
Modified for 2.02 intakes and roller rockers

Flow Numbers

Fuel

Cyberdyne gauge (it is also rebadged and
sold under the Intellitronix name brand). The Cyberdyne is available at Summit Racing Equipment for around $30.

Air Fuel Rectangular Odyssey Air Fuel Mixture Gauge, 0-995 milliVolts, 450-500 mV is considered ideal $109.95

Predator 908-367-8487
810 Cross St
Lakewood, NJ.  08701
 
 

Transmission

Rear End

Wheels

Team III Wheels
     1965 West 140
   San Leandro, CA 94577
    Ph (510) 895-8880
    Fx (510) 895-8102

Suppliers

Childs & Albert High Performance Racing	Ross Racing Pistons
NPD - Ford Store National Parts Depot Order Toll Free 800-235-3445 (24-hrs)	Zollner Pistons
Fomoco Obsolete	TRANS-REAREND
Holman Moody	Street Rod Vendors Page Index of vendors Carnut Automoble links Automobile Links
American Racing Wheels	Race Magic - BUY and SELL your RACE or PERFORMANCE Car PARTS for FREE
THE PERFORMANCE MARKETPLACE - Directory of Auto Racing Parts, Race Car Parts and Automotive High Performance Parts and Accessory Suppliers	Hanlon Motorsports - T5 and Tremec parts, sales and service Hanlon Motorsports 3621 St. Peters Road St. Peters, PA 19470 Quote:1099+50 ship+tx   610-469-2695
THE PERFORMANCE MARKETPLACE - Directory of Racing Suppliers	Tail Light Sequencers  Hotronics Products
All Standard Transmissions  861 Camdon Ave, Campbell. 408-998-5523	Radiantz Custom LED Lighting Assemblies
Russell Performance Products Braided Stainless Lines & Fittings	Stainless Steel Brakes
Stewart Warner Instruments and Guages	Cool Stuff!  ::: Z O O P S Products, Inc. :::
Mustang tech center-transmission Classic Data

Cylinder Head Specs

Part Number

In. runner volume

Ex. runner volume

Chamber volume

Deck thickness

Intake valve size

Exhaust valve size

Valve spring diameter

Rocker stud diameter

Pushrod diameter (A)

Intake Valve (1)

Intake Valves (8)

Exhaust Valve (1)

Exhaust Valves (8)

Valve Springs (16)

Retainers (16)

Keepers (32)

Ford Heads

#6022, #6032

170cc

60cc

60cc

5/8"

1.90"

1.60"

1.45"

3/8"

5/16"

#9764

#9769

#9761

#9766

#5767

#9724

#9611

#6025, #6026, #6035, #6027

170cc

60cc

60cc

5/8"

2.02"

1.60"

1.45"

3/8"

5/16"

#9760

#9765

#9761

#9766

#5767

#9724

#9611

#6037, #6028

170cc

60cc

60cc

5/8"

1.90"

1.60"

1.45"

-

5/16"

#9763

#9768

#9762

#9767

#5767

#9724

#9611

#6039, #6029

170cc

60cc

60cc

5/8"

2.02"

1.60"

1.45"

-

5/16"

#9778

#9777

#9762

#9767

#5767

#9724

#9611

#6006

170cc

125cc

72cc

5/8"

2.09"

1.66"

1.55"

-

-

#9754

#9755

#9756

#9757

#5792

#9734

#9612

#6007

170cc

125cc

76cc

5/8"

2.09"

1.66"

1.55"

-

-

#9754

#9755

#9756

#9757

#5792

#9734

#9612

#7716, #7717, #7718, #7719

210cc

75cc

60cc

5/8"

2.05"

1.60"

1.55"

7/16"

-

#9370

#9371

#9372

#9373

#5821/5823

#9708

#9616

#7721

240cc

80cc

47cc

5/8"

2.125"

1.625"

-

-

-

-

-

-

-

-

-

-

Cylinder Head Flow Data At 28" H2O

Flow @	#6025	#6037	#7716
valve lift	Int./Exh.	Int./Exh.	Int./Exh.
.100"	70/57	72/57	64/54
.200"	128/104	131/105	127/108
.300"	183/142	185/131	186/140
.400"	219/163	214/156	234/167
.500"	229/172	223/168	268/189
.600"	226/174	226/175	291/195
.700"	-	-	285/199

Flow Numbers and What They Mean

When comparing airflow numbers between cylinder heads, there are several things to consider. These are general guidelines... not absolutes... but they should be considered when purchasing cylinder heads.

 1) Every flow bench is different. One flow bench will not flow the same as the next. Other factors include: when and how often the bench is calibrated and what condition the equipment is in. As a result, you may not be getting an "apples-to-apples" comparison when comparing flow numbers from different flow benches.

2) Bigger is not always better. A large flow number doesnÕt always mean more power. This is especially true with street cylinder heads and in some cases, race heads. Velocity is just as important as flow. A smaller port volume generally equates to higher velocity for better street performance. The speed of the mixture determines how tightly the combustion chamber is packed. The more tightly packed the combustion chamber, the more pressure is developed when the mixture is ignited, pushing the piston with more force for more power. For example: A large port and a big flow number at 0.600" lift means low velocity (especially off-idle to 3500 rpm) and results in less throttle response. For the street, velocity is the key to overall performance.

3) Comparing the low lift flow numbers is a good indicator of how well the port will produce velocity. As a general rule, the larger the flow number at low valve lifts, (ie: 0.200"), the more velocityÉ see rule #2. 4) Type of valve influences flow. An undercut stem valve has less material around the stem for less flow restriction and therefore allow a port to flow better, which equates to more mixture making it to the chamber for more power.

5) Generally, in a street application, the smaller the valve diameter, the better the velocity and flow will be with the correctly sized port. This holds true for both the intake and the exhaust ports. When you can equal the flow of a larger port and larger valve with a smaller port and smaller valve, you have a much more efficient port, which will generally make more power and use less fuel.

6) What pressure differential were the heads flowed at? All Edelbrock heads are flowed at 28" of water, which more closely represents what an engine will see. Beware of companies flowing heads at anything less than 28" of water, because it is not an apples-to-apples comparison with Edelbrock heads.

Note: All flow numbers are in cfm. Intake flow numbers are long and short ports for big-block Chevys with right and left ports for Oldsmobile.

Part numbers in black are not legal for sale or use on pollution controlled motor vehicles.

Part numbers in red are 50-state street (emissions) legal for 1995 and earlier vehicles (E.O. #D-215-33).

Footnotes:

(A) Width of slot in guide plate

(B) Recommended valve sizes, not maximum
(C) Approximate figures
(D) Valves .120" longer than stock

---

 

Differential Types

Auburn Gear

Detroit True-Trac

 Unfortunately, conventional differentials have a severe limitation when you encounter a loose traction surface, a standard differential directs power to the wheel with the least resistance. The result: The wheel on the loose surface spins furiously, while the opposite wheel, on a better traction surface, literally stands still and therefore so do you! You're stuck!

 There are a number of positive traction and limited slip differentials on the market that can help deliver traction on loose surfaces but none offer the features, durability, performance and automatic operation of the Detroit True Trac.

 Positive Gear Action

 The Detroit True Trac is the only unit currently available to the aftermarket featuring a gear type limited slip design (no clutch or friction plates to wear out). Designed for medium duty 2WD and 4WD applications, this positive gear action provides a quiet, automatic splitting of torque, without creating the steering problems associated with other traction diffs. It's so smooth that power transfer goes literally unnoticed by the driver. In fact there's no hint of resistance in the steering wheel , even in front drive steering axles.

 Automatic Operation

 The Detroit True Trac performs like a standard (open) differential under normal highway driving conditions, until you need it. Then it automatically engages (no buttons or switches to manually engage) when you normally would experience wheel spin on wet, muddy or icy terrain. This provides improved handling and increased traction, furnishes an added measure of passenger safety and vehicle control, and increases the tread life of your tyres.

 With its dependable automatic operation, axles stress and shockloads are reduced and because of its rugged design requires no service adjustments, special lubricants or friction modifier additives.
 

Eaton Brute Strength

Basically, the difference between the two is this: A limited slip differential sends power to the non-drive wheel based on input torque; that is, power coming to the axle from the engine.

So, when high torque comes to the differential and both wheels are on a high traction surface, like a drag strip or country road, and high torque is delivered to the axle, the clutch pack clamps the gears to the differential case. This clamping action is in proportion to the torque delivered. The higher the torque, the higher the clamping load.