Some interesting reading... the juicy part from pages 10 thru 12 typed up :
Excerpt from
1970 AMC Rebel Machine 12-page "Owners Manual Supplement", typed text from pages 10, 11, & 12 :
rebel machine performance packagesWhen we say "Up With The Rebel Machine" We Mean It !
The very fact that you are a REBEL MACHINE owner
indicates you want more than a set of wheels,
you demand a GO-MACHINE THAT GOES!
Granted the REBEL MACHINE is a good performer, as is right off the showroom floor.
But just because you want to put more "muscle" into your MACHINE,
we suggest you consider one of the following performance packages.
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i. tune-up kitPerformance can be improved with out sacrificing any of the built in compromises of stock Rebel Machines,
in addition to a basic tune-up we recommend the following:
*Change to a fast distributor curve and advance the distributor to a total of 26 degrees.
The initial setting should be at approx. 6 Deg. BTDC. The advance should be complete at 2800 RPM.
*Re-jet the secondary circuit in your carburetor 2% richer.
*Although your Rebel Machine is capable of more RPM, experience on the drag strip has shown that optimum performance can be obtained by setting shift points at 5000 RPM.
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ii. tune-up plusStill taking into consideration the need for compromise on stock manifolds,
you can achieve even more performance from your Rebel Machine with these further modifications:
*Change to a fast distributor curve and advance the distributor to a total of 26 degrees.
The initial setting should be at approx. 6 Deg. BTDC.
*Re-jet the secondary circuit in your carburetor 2% richer.
*Blueprint cylinder heads. Valves should be reground to a performance seat,
combustion chambers should be cc'd and brought to the minimum of 49.10 CC's
by milling the head surfaces. Mill .010 of an inch from the head to gain 1.6 CC's.
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iii. street ( all-out )Once again though such production characteristics as idle, fuel economy, and exhaust sound may be compromised, the all out street machine is still just that, a street machine. Though its idle is rough, and its exhaust level somewhat loud, it is still quite tolerant in traffic, reliable in cold weather, and generally tractable in all-around everyday use. To create this kind of "machine" we recommend the following modifications and changes:
*Install tune-up kit ( As described above ).
*Blueprint cylinder heads ( As described above ).
*Install Service Package Camshaft Kit which includes camshaft, hydraulic valve lifters, and springs. AMC Service Part No. 448-6719
*Install replacement Edelbrock aluminum intake manifold AMC Service Part No. 448-8409
*Install replacement
Holley 4-BBL 850 CFM, Dual Pump Carburetor ( ? List # ? ) AMC SERVICE PART NO. 448-8658 ****Install Doug Thorley headers AMC Service Part No. Left Side 448-5727 Right Side 448-5726
Purchase headers from hot rod shops, or order direct from Doug Thorley Header Co.
*Install Mallory Hi-Output Ignition System AMC Service Part No. 448-7900.
The desired ignition curve is pre-set in the distributor from the factory.
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iv. nhra ( blueprint-not for street )The following changes and modifications represent a list of permissible engine and chassis changes
recommended for preparing a car for National Hot Rod Association
stock class.
In
NHRA competition although many modifications are allowed in suspension and safety areas, the engine parts must remain exactly the same as those installed in the car when it leaves the factory. Of course, it can and should be completely blueprinted according to released factory specifications. According to the released factory figures your Rebel Machine has an advertised shipping weight of 3650 lbs. with an advertised horsepower rating of 340, which gives it a power to weight ratio of 10.735. This qualifies it to compete in NHRA G/S & G/SA classes.
*Blueprint cylinder heads ( As described above ).
*Bring combustion chambers to minimum cubic centimeter allowable by factory spec.
*Re-bore engine block .030" over-bore.
*Install Mallory Hi-Output Ignition System AMC Service Part No. 448-7900.
The desired ignition curve is pre-set in the distributor from the factory.
*Re-jet carburetor secondary 2% richer.
*Reduce car to optimum weight ( 3650 lbs. ).
*Retain heavy-duty 10-1/2" Borg & Beck clutch and 40 lb. flywheel.
( ref. 1969 Hurst S/S AMX AMC Shiefer Flywheel Service Part No. 448 8100 )
*Install rear axle ratio of 4.44:1, AMC Service part No. 320-9854
*Use 28.5" x 7" rear drag racing slicks.
*Install special 90-10 front shocks
*Install special 50-50 rear shocks with 1-3/8" piston diameter.
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Under
AHRA rules engine and chassis preparation is not restricted solely to the use of stock parts. The following recommended changes and modifications are based on experience and testing done both on the dynamometer and the drag strip.
*Install a manual lash camshaft of your choice, ( maximum .580 lift recommended ).
*Replace stock cylinder heads with special (1970) large valve performance heads AMC Service Part No. 448-8659****Install special Edelbrock aluminum intake manifold AMC Service Part No. 448-8409
*Install special
Holley 4 barrel 850 CFM ? Vac Sec ? Carburetor ( ? List # ? ) AMC Service Part No. 448-8646*Install Mallory Hi-Output Ignition System, AMC Service Part No. 448-7900.
The desired ignition curve is pre-set in the distributor from the factory.
*Install Doug Thorley headers AMC Service Part No. Left Side 448-5727 Right Side 448-5726
*Add Ram Air Package ( Only if car is not equipped from factory ).
*Retain heavy-duty 10-1/2" Borg & Beck clutch and 40 lb. flywheel.
*Install special 8" rear wheel rims.
*Use special 10" rear drag racing slicks.
*Install special 5.00:1 rear axle AMC Service Part No. 448-6587
*Install special 90-10 front shocks
*Install special 50-50 rear shocks with 1-3/8" piston diameter.
***Order from: Hurst Performance Research Corp.
10711 Northend Ave. Ferndale, Mich. 48220-----------
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